Rotary viscometer convenient to position

Abstract

The utility model relates to the technical field of rotational viscometers, and discloses a rotational viscometer convenient to position, the rotational viscometer comprises a positioning mechanism, a support assembly and a measuring assembly, and the positioning mechanism comprises a base and four piston tubes mounted at the bottom of the base. According to the rotational viscometer convenient to position, the rotational viscometer can be adsorbed and positioned on a contact surface through the arranged positioning mechanism, so that the influence caused by shaking is effectively reduced, the measurement precision and stability are improved, the operation is convenient and fast, and a user can conveniently move the rotational viscometer to a proper position; two first worms are respectively rotated to drive two lead screws to rotate through two first worm gears, so that two adjusting plates can move in the base, corresponding piston rods can be driven to move in piston pipes, suckers are adsorbed on a contact surface, and the adsorption positioning effect is realized; the height of the measuring assembly can be adjusted through the arranged support assembly, and finally the viscosity of the fluid can be measured through the arranged measuring assembly.

Description

Technical Field

[0001] This application relates to the field of rotational viscometer technology, specifically to a rotational viscometer that is easy to position. Background Technology

[0002] With scientific advancements and improvements in industrial production, measuring the viscosity of substances has become crucial. Rotational viscometers can be used to determine the viscosity and flow behavior of polymer liquids. Since most polymers are processed and molded under viscous flow conditions, understanding the properties of viscous flow is extremely important in polymer manufacturing processes.

[0003] An existing patent (publication number: CN206095863U) discloses a rotational viscometer that solves the problem of energy waste and even shortened motor life caused by motor idling. The key technical point is that the viscosity measuring device includes a rotor and a motor for driving the rotor. A support tray is provided below the rotor, and a container for holding the sample is placed on the upper surface of the support tray. It also includes a pressure detection unit, a comparison unit, and an execution unit. This rotational viscometer, through the pressure detection unit, can monitor the pressure change between the container and the support tray. When the pressure value between the container and the support tray is greater than the standard pressure value, the motor can be started; conversely, when the container does not contain the sample or the quantity of the sample is insufficient, the pressure value between the container and the support tray is less than the standard pressure value, and the motor cannot be started. This avoids motor idling, thereby saving energy and extending the motor's service life.

[0004] The device in the aforementioned comparative document is placed directly on the desktop for use, but it is prone to shaking when measuring high-viscosity liquids or rotating at high speeds, affecting measurement accuracy and stability. To solve the above problems, a rotational viscometer that is easy to position is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a rotational viscometer that is easy to position. The device can be conveniently positioned on a table using an adsorption method, reducing the impact of shaking.

[0006] To achieve the above objectives, this application provides the following technical solution: a rotational viscometer for easy positioning, comprising a positioning mechanism, a support assembly, and a measuring assembly. The positioning mechanism includes a base and four piston tubes installed at the bottom of the base. Each piston tube has a suction cup connected to its bottom. Each piston tube has a piston rod that can move up and down installed inside. The base has two rotatable lead screws and four fixed guide rods installed inside. Each lead screw has an adjusting plate threadedly connected to its outer surface. The top ends of the four piston rods are fixedly connected to the two ends of the two adjusting plates. Each lead screw has a first worm gear fixedly connected to its top. The inner wall of the base is rotatably connected to two first worms, which mesh with the two first worm gears respectively.

[0007] The above scheme utilizes a positioning mechanism to adhere the device to the contact surface, effectively reducing the impact of shaking, improving measurement accuracy and stability, and providing convenient operation for users to move the device to a suitable position. Rotating the two first worm gears drives the two lead screws, which in turn moves the two adjusting plates within the base. This, in turn, moves the corresponding piston rods within the piston tube, causing the suction cup to adhere to the contact surface, achieving the adsorption positioning effect. The support assembly allows for height adjustment of the measuring component, facilitating use. Finally, the measuring component can measure the viscosity of the fluid.

[0008] Furthermore, the two adjustment plates are respectively slidably sleeved on the outside of the four guide rods, and a limit sleeve is fixedly connected to the outer surface of each guide rod.

[0009] The above scheme limits the relationship between the adjusting plate and the guide rod, enabling the adjusting plate to move up and down more stably inside the base. The limiting sleeve can limit the range of the adjusting plate's upward movement, thereby avoiding motion interference between the adjusting plate and the first worm gear.

[0010] Furthermore, each of the first worm gears has a first knob fixedly connected to its shaft end through the base.

[0011] The above scheme increases the contact area at the end of the first worm shaft by setting the first knob, thus facilitating the rotation of the first worm.

[0012] Furthermore, the bracket assembly includes a support rack fixedly connected to the upper surface of the base and a connecting block slidably sleeved on the outer surface of the support rack. A rotating rod is rotatably connected to the inner wall of the connecting block, and a planar gear is fixedly connected to the outer surface of the rotating rod. The planar gear meshes with the support rack.

[0013] With the above solution, when the planar gear rotates, the connecting block can move up and down along the supporting rack, thereby achieving the effect of conveniently adjusting the height of the connecting block.

[0014] Furthermore, a second worm gear is fixedly connected to the shaft end of the rotating rod, and a rotatable second worm is installed on the outer surface of the connecting block, the second worm meshing with the second worm gear.

[0015] The above scheme, through the cooperation of the second worm gear and the second worm, can restrict the rotation of the rotating rod, thereby restricting the motion state of the planar gear. This allows the connecting block to be positioned on the supporting rack, preventing it from falling freely.

[0016] Furthermore, a second knob is fixedly connected to the shaft end of the second worm gear.

[0017] The above scheme allows for an increase in the contact area at the end of the second worm shaft by using a second knob, thus facilitating the rotation of the second worm.

[0018] Furthermore, a top cover is fixedly connected to the top end of the supporting rack.

[0019] The above solution limits the upward movement range of the connecting block by setting the top cover, preventing the connecting block from derailing during movement.

[0020] Furthermore, the measuring component includes a connecting plate fixedly connected to the outer surface of the connecting block, a drive motor is mounted on one side of the connecting plate, and a rotor is mounted on the output end of the drive motor.

[0021] The above method allows the rotor to work when the drive motor starts, thereby agitating the fluid, measuring the fluid's resistance to the rotor, and calculating the viscosity.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This rotary viscometer, designed for easy positioning, utilizes a positioning mechanism to adhere the device to the contact surface, effectively reducing the impact of shaking and improving measurement accuracy and stability. It is also convenient for users to move the device to a suitable position. Rotating the two first worm gears drives two lead screws, which in turn move two adjusting plates within the base. This, in turn, moves the corresponding piston rod within the piston tube, causing the suction cup to adhere to the contact surface, achieving the adsorption positioning effect. The height of the measuring component can be adjusted using the included support assembly, and finally, the measuring component itself can measure the viscosity of the fluid. Attached Figure Description

[0024] Figure 1 This is a top view of the overall structure of this application.

[0025] Figure 2 This is a schematic diagram of the overall bottom view of the structure of this application;

[0026] Figure 3 This is a schematic diagram of the internal structure of the base of the structure in this application;

[0027] Figure 4 This is a partial cross-sectional view of the structure of this application;

[0028] Figure 5 This is a partial top view of the structure of this application.

[0029] In the picture:

[0030] 1. Positioning mechanism; 101. Base; 102. Piston tube; 103. Suction cup; 104. Piston rod; 105. Adjusting plate; 106. Lead screw; 107. Guide rod; 108. Limiting sleeve; 109. First worm gear; 110. First worm; 111. First knob; 2. Support assembly; 201. Support rack; 202. Connecting block; 203. Rotating rod; 204. Planar gear; 205. Second worm gear; 206. Second worm; 207. Second knob; 208. Top cover; 3. Measuring assembly; 301. Connecting plate; 302. Drive motor; 303. Rotor. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 1 , Figure 2 and Figure 3This embodiment provides a rotational viscometer for easy positioning, comprising a positioning mechanism 1, a support assembly 2, and a measuring assembly 3. The positioning mechanism 1 includes a base 101 and four piston tubes 102 mounted on the bottom of the base 101. Each piston tube 102 has a suction cup 103 connected to its bottom. Each piston tube 102 has a vertically movable piston rod 104 installed inside. The base 101 has two rotatable lead screws 106 and four fixed guide rods 107 installed inside. Two adjusting plates 105 are slidably sleeved on the outside of the four guide rods 107, defining the relationship between the adjusting plates 105 and the guide rods 107, enabling the adjusting plates 105 to move more stably within the base 101. Each lead screw 106... The outer surface of the device is threaded with adjustment plates 105. The top ends of the four piston rods 104 are fixedly connected to the two ends of the two adjustment plates 105 respectively. When the lead screw 106 rotates, it can drive the two corresponding piston rods 104 to move in the piston tube 102 through the adjustment plates 105. When the piston rods 104 move upward, the internal volume of the suction cup 103 increases, the air pressure decreases, and a negative pressure is formed. In this way, the suction cup 103 can be adsorbed on the table to achieve the effect of adsorption and positioning, improve the stability of the base 101, reduce the impact of shaking on the measuring component 3, and due to the self-locking effect of the lead screw 106, it can limit the adjustment plate 105 after it is adjusted to a suitable position to prevent the adjustment plate 105 from falling down randomly.

[0033] Please see Figure 2 , Figure 3 and Figure 4 Each lead screw 106 has a first worm gear 109 fixedly connected to its top. Two first worms 110 are rotatably connected to the inner wall of the base 101. The two first worms 110 mesh with the two first worm gears 109 respectively. The shaft end of each first worm 110 passes through the base 101 and is fixedly connected to a first knob 111. The first knob 111 increases the contact area of ​​the shaft end of the first worm 110, thus facilitating the rotation of the first worm 110. The outer surface of each guide rod 107 is fixedly connected to a limit sleeve 108. The limit sleeve 108 limits the upward movement range of the adjustment plate 105, thereby avoiding motion interference between the adjustment plate 105 and the first worm 110. The first worm gear 109 and the first worm 110 cooperate to further limit the rotation of the lead screw 106, thereby achieving a double locking effect, preventing the adjustment plate 105 from falling, and improving the stability of the suction cup 103 adsorption.

[0034] Please see Figure 1 , Figure 2 and Figure 5The support assembly 2 includes a support rack 201 fixedly connected to the upper surface of the base 101 and a connecting block 202 slidably sleeved on the outer surface of the support rack 201. A rotating rod 203 is rotatably connected to the inner wall of the connecting block 202, and a planar gear 204 is fixedly connected to the outer surface of the rotating rod 203. The planar gear 204 meshes with the support rack 201. When the planar gear 204 rotates, the connecting block 202 can move up and down along the support rack 201, thereby achieving convenient adjustment of the height of the connecting block 202. A second worm gear 205 is fixedly connected to the shaft end of the rotating rod 203, and a rotatable second worm 206 is installed on the outer surface of the connecting block 202. The second worm 206 meshes with the second worm gear 205. Through the interaction of the second worm gear 205 and the second worm 206, the rotation of the rotating rod 203 can be restricted, thereby restricting the movement of the planar gear 204. The connecting block 202 is positioned on the support rack 201 to prevent it from falling freely. A second knob 207 is fixedly connected to the shaft end of the second worm 206. The second knob 207 increases the contact area of ​​the shaft end of the second worm 206, making it easier to rotate the second worm 206. A top cover 208 is fixedly connected to the top of the support rack 201. The top cover 208 limits the upward movement range of the connecting block 202, preventing it from derailing during movement. The measuring component 3 includes a connecting plate 301 fixedly connected to the outer surface of the connecting block 202. A drive motor 302 is installed on one side of the connecting plate 301. A rotor 303 is installed at the output end of the drive motor 302. When the drive motor 302 starts, it can drive the rotor 303 to work, thereby agitating the fluid and measuring the resistance of the fluid to the rotor 303, thus calculating the viscosity.

[0035] In this embodiment, a rotational viscometer that is easy to position can be positioned on the contact surface by a positioning mechanism 1, effectively reducing the impact of shaking, improving measurement accuracy and stability, and making it convenient for users to move the device to a suitable position. By rotating the two first worm gears 110, the two first worm wheels 109 drive the two lead screws 106 to rotate, thereby moving the two adjusting plates 105 in the base 101. This drives the corresponding piston rod 104 to move in the piston tube 102, so that the suction cup 103 is adsorbed on the contact surface, achieving the effect of adsorption and positioning. The height of the measuring component 3 can be adjusted by the bracket assembly 2 for easy use. Finally, the measuring component 3 can measure the viscosity of the fluid.

[0036] The working principle of the above embodiment is as follows: The device is placed in a suitable position on a table, at which point all four suction cups 103 are in contact with the table, forming a preliminary seal between the edges of the suction cups 103 and the table. The piston rod 104 is located in the lower part of the suction cup 103, which is filled with air at the same pressure as the external atmospheric pressure. Then, the two first knobs 111 are rotated. When the first knobs 111 are rotated, the first worm gear 110 rotates, which in turn drives the first worm wheel 109 to rotate. The rotation of the first worm wheel 109 causes the corresponding lead screw 106 to rotate, thereby causing the adjusting plate 105 to move the two corresponding piston rods 104 upwards within the suction cup 103. At this time, the internal volume of the corresponding suction cup 103 increases, the air pressure decreases, creating a negative pressure. The external atmospheric pressure presses the suction cup 103 tightly against the table, generating an adsorption force, thereby enabling the base 1 to be lifted. The 01 is stably positioned on the tabletop, and through the self-locking effect of the lead screw 106, the first worm gear 109, and the first worm 110, the piston rod 104 can be maintained in the upper position, thereby maintaining the negative pressure state inside the suction cup 103 and ensuring continuous adsorption force. This allows the measuring component 3 to remain stable and unaffected by shaking during operation. At the same time, by rotating the second knob 207, the height of the connecting block 202 can be adjusted, thereby adjusting the overall height of the measuring component 3 for convenient measurement of different fluids. When the second knob 207 is rotated, it drives the second worm 206 to rotate. The rotation of the second worm 206 causes the second worm gear 205 to drive the rotating rod 203 and the planar gear 204 to rotate. Since the planar gear 204 meshes with the support rack 201, the connecting block 202 can move up and down along the support rack 201.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotational viscometer for easy positioning, comprising a positioning mechanism (1), a support assembly (2), and a measuring assembly (3), characterized in that: The positioning mechanism (1) includes a base (101) and four piston tubes (102) installed at the bottom of the base (101). Each piston tube (102) is connected to a suction cup (103) at its bottom. Each piston tube (102) is equipped with a piston rod (104) that can move up and down. The base (101) is equipped with two rotatable lead screws (106) and four fixed guide rods (107). Each lead screw (106) is threaded with an adjustment plate (105) on its outer surface. The top ends of the four piston rods (104) are fixedly connected to the two ends of the two adjustment plates (105). Each lead screw (106) is fixedly connected with a first worm gear (109) at its top. The inner wall of the base (101) is rotatably connected to two first worms (110). The two first worms (110) mesh with the two first worm gears (109) respectively.

2. The rotational viscometer for easy positioning according to claim 1, characterized in that: The two adjustment plates (105) are respectively slidably sleeved on the outside of the four guide rods (107), and a limit sleeve (108) is fixedly connected to the outer surface of each guide rod (107).

3. The rotational viscometer for easy positioning according to claim 1, characterized in that: The shaft end of each of the first worm gears (110) passes through the base (101) and is fixedly connected to the first knob (111).

4. A rotational viscometer for easy positioning according to claim 1, characterized in that: The bracket assembly (2) includes a support rack (201) fixedly connected to the upper surface of the base (101) and a connecting block (202) slidably sleeved on the outer surface of the support rack (201). A rotating rod (203) is rotatably connected to the inner wall of the connecting block (202), and a planar gear (204) is fixedly connected to the outer surface of the rotating rod (203). The planar gear (204) meshes with the support rack (201).

5. A rotational viscometer for easy positioning according to claim 4, characterized in that: The rotating shaft end of the rotating rod (203) is fixedly connected to a second worm gear (205), and a rotatable second worm (206) is installed on the outer surface of the connecting block (202), and the second worm (206) meshes with the second worm gear (205).

6. A rotational viscometer for easy positioning according to claim 5, characterized in that: The second worm (206) has a second knob (207) fixedly connected to its shaft end.

7. A rotational viscometer for easy positioning according to claim 4, characterized in that: The top end of the support rack (201) is fixedly connected to a top cover (208).

8. A rotational viscometer for easy positioning according to claim 4, characterized in that: The measuring component (3) includes a connecting plate (301) fixedly connected to the outer surface of the connecting block (202), a drive motor (302) is installed on one side of the connecting plate (301), and a rotor (303) is installed at the output end of the drive motor (302).

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