Viscosity measurement double-shell thermostatic bath capable of providing uniform and stable temperature field

Abstract

The utility model provides a double-shell thermostatic bath for viscosity measurement, which can provide a uniform and stable temperature field. The double-shell thermostatic bath comprises an outer shell structure, an inner shell structure, double-side observation windows, a first mounting plate and a second mounting plate, an inner shell structure is erected in the outer shell structure, and double-side observation windows are arranged at the outer observation windows on the two sides of the outer shell structure and the corresponding inner observation windows on the two sides of the inner shell structure correspondingly. A groove cavity of the inner shell structure is divided into a first groove cavity and a second groove cavity front and back through a vertically-arranged water baffle, and a first mounting plate and a second mounting plate are arranged at top openings of the first groove cavity and the second groove cavity correspondingly. According to the utility model, a front-back groove cavity structure is formed through the water baffle, and a water circulation passage is formed between the first groove cavity and the second groove cavity through the overflow port at the top of the water baffle and the flow mixing pipe, so that the water bath temperature control precision is higher, the temperature field is more uniform and stable, and the accuracy and the stability of a metrological verification result are greatly improved.

Description

Technical Field

[0001] The utility model relates to a thermostatic bath for viscosity measurement, in particular to a double-shell thermostatic bath for viscosity measurement which can provide a uniform and stable temperature field. Background Art

[0002] The thermostatic bath provides users with a temperature field with controlled heat and cold and uniform temperature when working. It can be used to test the test samples or products at constant temperature. It can also be used as a heat source or cold source for direct heating or cooling and auxiliary heating or cooling. It is often used in research departments such as petroleum, chemical industry, electronic instrumentation, physics, chemistry, bioengineering, medicine and health, life science, light industry and food, physical property testing and chemical analysis. The viscometer is used to measure the viscous resistance and dynamic viscosity of liquids. It is widely used to measure the viscosity of various fluids such as grease, paint, plastic, food, medicine, cosmetics, adhesive products, etc. It is a precision instrument for monitoring and controlling the stable quality of products in production.

[0003] At present, the viscometer calibration generally uses a constant temperature bath to provide a constant room temperature to control the temperature of the viscosity oil, but the temperature field of each area of ​​the existing constant temperature bath is unstable, and the local temperature is difficult to be constant to a certain precise value. The temperature value is uneven and cannot meet the requirements for accurate control of the viscosity oil during the existing viscometer calibration. Therefore, it is necessary to improve the existing constant temperature bath. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the defects of the prior art, a double-shell constant temperature bath for viscosity measurement which can provide a uniform and stable temperature field is provided.

[0005] The utility model adopts the following technical solutions to solve the above technical problems:

[0006] The utility model provides a double-shell constant temperature bath for viscosity measurement that can provide a uniform and stable temperature field, comprising an outer shell structure, an inner shell structure, double-side observation windows, a first mounting plate and a second mounting plate, wherein:

[0007] The inner shell structure is mounted inside the outer shell structure, and the outer observation windows on both sides of the outer shell structure and the corresponding inner observation windows on both sides of the inner shell structure are respectively provided with double-side observation windows;

[0008] The groove cavity of the inner shell structure is divided into a first groove cavity and a second groove cavity front and back by a vertically arranged water baffle plate, and the first mounting plate and the second mounting plate are respectively arranged at the top openings of the first groove cavity and the second groove cavity.

[0009] Preferably, the outer shell structure comprises a first side panel, a second side panel, a bottom panel and a handle, wherein:

[0010] The first side panel and the second side panel are both two in number, and are connected to each other in front, back, left, and right directions to form a square frame structure, and the bottom plate is provided at the bottom of the square frame structure;

[0011] The handles are respectively arranged at the upper ends of the outer side walls of the two first side panels, and the external observation windows are respectively opened at the front ends of the second side panels on both sides.

[0012] Preferably, the outer shell structure further includes a water inlet pipe and a drain pipe, wherein:

[0013] The water inlet pipe and the drain pipe are arranged side by side on the outer shell structure close to one side of the first groove cavity, and the inner ends thereof are both connected to the lower part of the first groove cavity.

[0014] Preferably, the inner shell structure comprises an inner tank body, an inner tank frame plate and a water baffle, wherein:

[0015] The inner tank body is a square frame structure with an opening at the top, and inner observation windows are respectively provided at the front ends of the left and right sides;

[0016] The inner tank frame plate is a square plate with an opening in the middle, the inner edge of which is fixedly arranged on the top of the inner tank body, and the outer edge of which is mounted on the outer shell structure;

[0017] The water retaining plate is a square plate body, which is vertically arranged in the inner tank body to divide the tank cavity of the inner tank body into the first tank cavity and the second tank cavity.

[0018] More preferably, the top height of the water baffle is 5-10 cm lower than the top opening of the inner tank body, so as to form an overflow channel above the water baffle.

[0019] More preferably, the bottom and surrounding of the inner tank body are mounted in the tank body of the inner shell structure through a plurality of columns.

[0020] Preferably, the double-sided observation window comprises a first glass, a glass fixing frame and a second glass, wherein:

[0021] The first glass is fixedly disposed on the inner side of the glass fixing frame and is located at the inner observation window of the inner shell structure;

[0022] The second glass is fixedly arranged on the outer side of the glass fixing frame and is located at the outer observation window of the outer shell structure.

[0023] Preferably, the double-sided observation window further comprises a glass inner locking plate, a glass sealing gasket and a glass outer locking plate, wherein:

[0024] The glass inner locking plate fixes the first glass and the inner side of the glass fixing frame to the inner shell structure through the corresponding glass sealing gasket;

[0025] The glass outer locking plate fixes the second glass and the outer side of the glass fixing frame to the outer shell structure through the corresponding glass sealing gasket.

[0026] Preferably, the first mounting plate is a plate-like structure, the overall shape and size of which are the same as the cross-section of the first cavity, covering the top of the first cavity, and having a first mounting hole in the middle thereof for mounting a heating cycle controller.

[0027] Preferably, the second mounting plate is a plate-like structure, the overall shape and size of which are the same as the cross-section of the second cavity, covers the top of the second cavity, and has a plurality of second mounting holes arranged at intervals in the middle for mounting the measuring frame.

[0028] Preferably, the double-shell thermostatic bath for viscosity measurement that can provide a uniform and stable temperature field further includes a mixing tube, wherein:

[0029] One end of the mixing tube is arranged at the bottom of the second tank cavity, and the other end extends to the top of the first tank cavity to be connected to a heating cycle controller.

[0030] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0031] The utility model can provide a double-shell constant temperature bath for viscosity measurement with a uniform and stable temperature field. The bath body is arranged as a double-shell structure consisting of an outer shell structure and an inner shell structure, thereby effectively ensuring the heat preservation effect of the bath body. A front and rear tank cavity structure is formed by a water baffle, and an overflow port and a mixing flow pipe on the top of the water baffle are used to form a water circulation passage between the first tank cavity and the second tank cavity, so that the water bath temperature control accuracy is higher and the temperature field is more uniform and stable. In addition, the double-sided observation windows arranged on both sides facilitate researchers to observe and measure, and are suitable for measurement and verification of viscometers. The double-shell constant temperature bath can meet the requirements for precise control of viscosity oil during verification of existing viscometers, and greatly improves the accuracy and stability of metrological verification results. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The three-dimensional structure of a double-shell thermostatic bath for viscosity measurement that can provide a uniform and stable temperature field is shown in the utility model. Figure 1 ;

[0033] Figure 2 The three-dimensional structure of a double-shell thermostatic bath for viscosity measurement that can provide a uniform and stable temperature field is shown in the utility model. Figure 2 ;

[0034] Figure 3 It is a schematic diagram of the top view of a double-shell thermostatic bath for viscosity measurement that can provide a uniform and stable temperature field according to the utility model;

[0035] Figure 4 It is a side view structural schematic diagram of a double-shell thermostatic bath for viscosity measurement that can provide a uniform and stable temperature field according to the utility model;

[0036] Figure 5 It is a schematic cross-sectional view of a double-shell thermostatic bath for viscosity measurement that can provide a uniform and stable temperature field according to the utility model;

[0037] Figure 6 The utility model is a schematic diagram of the explosion structure of a double-shell thermostatic bath for viscosity measurement which can provide a uniform and stable temperature field. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0039] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0040] In some embodiments, Figure 1 and Figure 2 As shown, a double-shell thermostatic bath for viscosity measurement that can provide a uniform and stable temperature field is provided, and the double-shell thermostatic bath mainly includes an outer shell structure 100, an inner shell structure 200, double-side observation windows 300, a first mounting plate 400, and a second mounting plate 500. The outer shell structure 100, the inner shell structure 200, the first mounting plate 400, and the second mounting plate 500 are made of stainless steel or aluminum alloy as a whole, and the main body of the side observation window 300 is made of tempered glass.

[0041] The inner shell structure 200 is installed inside the outer shell structure 100, and a gap is formed between the two to form an air insulation layer between the two. In order to facilitate the installation of the double-side observation windows 300, an outer observation window 105 is opened on both sides of the outer shell structure 100, and an inner observation window 203 is opened on both sides of the inner shell structure 200. There are two double-side observation windows 300, which are installed at the outer observation window 105 and the inner observation window 203 respectively.

[0042] In order to make the water bath temperature control more accurate and the temperature field more uniform and stable, the groove cavity of the inner shell structure 200 is divided into a first groove cavity A and a second groove cavity B by a vertically arranged water baffle 204. The first groove cavity A constitutes a water bath heating control area, and heating is achieved by a heating cycle controller installed on the top; the second groove cavity B constitutes a water bath constant temperature area, which is used to provide accurate temperature control for viscometer calibration. The first mounting plate 400 and the second mounting plate 500 are respectively arranged at the top openings of the first groove cavity A and the second groove cavity B.

[0043] In some of the embodiments, Figure 1 , Figure 2 and Figure 6 As shown, the outer shell structure 100 mainly includes a first side plate 101, a second side plate 102, a bottom plate 103 and a handle 104. The first side plate 101 and the second side plate 102 are both two, which are respectively connected to each other in front, back, left and right to form a square frame structure, and the bottom plate 103 is arranged at the bottom of the square frame structure to form an outer shell with an open top.

[0044] In addition, in order to facilitate the transportation of the double-shell thermostatic bath and improve the flexibility of use, the handles 104 are respectively provided at the upper ends of the outer side walls of the two first side panels 101; and to facilitate researchers' observation and measurement, the front ends of the second side panels 102 on both sides are respectively provided with external observation windows 105, which are suitable for measurement and calibration of the viscometer.

[0045] In some of the embodiments, Figure 3 , Figure 4 and Figure 6 As shown, the outer shell structure 100 further includes a water inlet pipe 106 and a drain pipe 107 , and control valves are installed on both the water inlet pipe 106 and the drain pipe 107 .

[0046] The water inlet pipe 106 and the drain pipe 107 are arranged side by side on the outer shell structure 100 near the first tank cavity A, and the inner ends thereof are both connected to the lower part of the first tank cavity A. Water is added to the first tank cavity A through the water inlet pipe 106, and the used water is discharged through the drain pipe 107, which is simple and convenient to operate.

[0047] In some of the embodiments, Figure 1 , Figure 2 and Figure 6 As shown, the inner shell structure 200 mainly includes an inner tank body 201, an inner tank frame plate 202 and a water retaining plate 204. The inner tank body 201 is a square frame structure with an open top, and inner observation windows 203 are respectively opened at the front ends of the left and right sides.

[0048] In order to facilitate installation with the inner tank body 201, the inner tank frame plate 202 is a square plate with an opening in the middle, the inner edge of which is fixed to the four frames at the top of the inner tank body 201 by welding, and the outer edge is mounted on the outer shell structure 100 and fixed by screws. The bottom and surrounding of the inner tank body 201 are mounted in the tank body of the inner shell structure 200 through a number of columns 205.

[0049] In order to facilitate the independent control of the heating area and the temperature control area, a water baffle 204 is installed in the inner tank body 201. The water baffle 204 adopts a modular and easy-to-disassemble design, which is beautiful and easy to clean. The water baffle 204 can also ensure that the liquid level in the first tank cavity A and the second tank cavity B is constant. The water baffle 204 is a square plate body, which is vertically arranged in the inner tank body 201 to divide the tank cavity of the inner tank body 201 into the first tank cavity A and the second tank cavity B.

[0050] The first tank cavity A and the second tank cavity B form the double tank structure design, the volume of the first tank cavity A is smaller than the volume of the second tank cavity B, the solution stirred at a constant temperature in the first tank cavity A is transported to the second tank cavity B through the mixing pipe 600, and the solution in the second tank cavity B overflows back to the first tank cavity A through the top of the water plate 204, and the liquid in the second tank cavity B is completely replaced once in 3-5 minutes. The temperature uniformity of the test part can be guaranteed to reach 0.003K.

[0051] The inner tank body 201 is formed into a front and rear tank cavity structure by the water baffle 204, and the overflow port at the top of the water baffle 204 and the mixing pipe 600 are used to form a water circulation passage between the first tank cavity A and the second tank cavity B, so that the water bath temperature control accuracy is higher and the temperature field is more uniform and stable.

[0052] As required, the top height of the water baffle 204 is 5-10 cm lower than the top opening of the inner tank body 201 to form an overflow channel above the water baffle 204. The top opening of the inner tank body 201 can be an opening in one direction, or can be designed as a plurality of arrays of through holes, so that the water bath in the second tank cavity B can automatically flow into the first tank cavity A for circulation heating.

[0053] In some of the embodiments, Figure 1 , Figure 2 and Figure 6 As shown, the double-sided observation window 300 includes a glass inner locking plate 301, a glass sealing gasket 302, a first glass 303, a glass fixing frame 304, a second glass 305, and a glass outer locking plate 306. The glass inner locking plate 301 and the glass outer locking plate 306 are made of stainless steel or aluminum alloy, the glass sealing gasket 302 is made of rubber, and the first glass 303 and the second glass 305 are made of tempered glass, forming a large-scale double-tempered hollow glass observation window structure, which is filled with argon gas to avoid condensation.

[0054] In terms of specific structure, the first glass 303 is fixedly arranged on the inner side of the glass fixing frame 304 and is located at the inner observation window 203 of the inner shell structure 200. The second glass 305 is fixedly arranged on the outer side of the glass fixing frame 304 and is located at the outer observation window 105 of the outer shell structure 100. The first glass 303 and the second glass 305 are respectively installed on both sides of the glass fixing frame 304, and an air insulation layer is formed between the two.

[0055] In addition, the glass inner locking plate 301 fixes the first glass 303 and the inner side of the glass fixing frame 304 to the inner shell structure 200 through the corresponding glass sealing gasket 302. The glass outer locking plate 306 fixes the second glass 305 and the outer side of the glass fixing frame 304 to the outer shell structure 100 through the corresponding glass sealing gasket 302.

[0056] In some of the embodiments, Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the first mounting plate 400 is a plate-like structure, and its overall shape and size are the same as the cross-section of the first slot cavity A. It is fixed with screws to cover the top opening of the first slot cavity A, and a first mounting hole 401 is opened in the middle for installing a heating cycle controller. The heating cycle controller uses an existing controller head for stirring and heating the water bath.

[0057] Similarly, the second mounting plate 500 is a plate-like structure, and its overall shape and size are the same as the cross-section of the second groove cavity B. It is fixed with screws to cover the top of the second groove cavity B, and four second mounting holes 501 arranged at intervals on the left and right are opened in the middle. Each second mounting hole 501 is used to install a measuring frame to provide a stable and uniform temperature field for the viscometer.

[0058] In some of the embodiments, Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the double-shell constant temperature bath for viscosity measurement that can provide a uniform and stable temperature field also includes a mixing tube 600. A plurality of through holes 601 are opened at one end of the mixing tube 600, and the mixing tube 600 is arranged at the bottom of the second tank cavity B, corresponding to the second mounting holes 501 above.

[0059] The other end of the mixing tube 600 extends to the top of the first tank cavity A and is connected to the heating circulation controller, which is used to transport the water bath with controlled temperature in the first tank cavity A to the second tank cavity B, and cooperate with the overflow hole at the top of the water baffle 204 to realize the water bath circulation in the first tank cavity A and the second tank cavity B.

[0060] When using the double-shell constant temperature bath for viscosity measurement, which can provide a uniform and stable temperature field, water is added to the first tank cavity A and the second tank cavity B in advance, and the heating cycle controller and the measuring frame are respectively installed on the first mounting plate 400 and the second mounting plate 500, and the heating cycle controller is started to stir and heat the water bath in the first tank cavity A. The water in the first tank cavity A can be transported to the second tank cavity B through the mixing pipe 600 by the water pump provided on the heating cycle controller, so as to achieve an almost constant temperature field in the second tank cavity B, with a fluctuation of less than ±0.003 degrees. The water bath at the top of the second tank cavity B flows back to the first tank cavity A through the top of the water baffle 204, so that the water bath temperature control accuracy is higher, and the temperature field is more uniform and stable; the requirements for precise control of viscosity oil during the existing viscometer calibration are met, and the accuracy and stability of the metrological calibration results are greatly improved.

[0061] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0062] Secondly, the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0063] Finally, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-shell thermostatic bath for viscosity measurement that can provide a uniform and stable temperature field, characterized in that: It includes an outer shell structure, an inner shell structure, double-sided observation windows, a first mounting plate and a second mounting plate, wherein: The inner shell structure is mounted inside the outer shell structure, and the outer observation windows on both sides of the outer shell structure and the corresponding inner observation windows on both sides of the inner shell structure are respectively provided with double-side observation windows; The groove cavity of the inner shell structure is divided into a first groove cavity and a second groove cavity front and back by a vertically arranged water baffle plate, and the first mounting plate and the second mounting plate are respectively arranged at the top openings of the first groove cavity and the second groove cavity.

2. The double-shell thermostatic bath for viscosity measurement capable of providing a uniform and stable temperature field according to claim 1, characterized in that: The outer shell structure comprises a first side plate, a second side plate, a bottom plate and a handle, wherein: The first side panel and the second side panel are both two in number, and are connected to each other in front, back, left, and right directions to form a square frame structure, and the bottom plate is provided at the bottom of the square frame structure; The handles are respectively arranged at the upper ends of the outer side walls of the two first side panels, and the external observation windows are respectively opened at the front ends of the second side panels on both sides.

3. The double-shell thermostatic bath for viscosity measurement capable of providing a uniform and stable temperature field according to claim 1, characterized in that: The outer shell structure also includes a water inlet pipe and a drain pipe, wherein: The water inlet pipe and the drain pipe are arranged side by side on the outer shell structure close to one side of the first groove cavity, and the inner ends thereof are both connected to the lower part of the first groove cavity.

4. The double-shell thermostatic bath for viscosity measurement capable of providing a uniform and stable temperature field according to claim 1, characterized in that: The inner shell structure includes an inner tank body, an inner tank frame plate and a water baffle, wherein: The inner tank body is a square frame structure with an opening at the top, and inner observation windows are respectively provided at the front ends of the left and right sides thereof, and are mounted in the outer shell structure through a plurality of columns; The inner tank frame plate is a square plate with an opening in the middle, the inner edge of which is fixedly arranged on the top of the inner tank body, and the outer edge of which is mounted on the outer shell structure; The water retaining plate is a square plate body, which is vertically arranged in the inner tank body to divide the tank cavity of the inner tank body into the first tank cavity and the second tank cavity.

5. The double-shell thermostatic bath for viscosity measurement capable of providing a uniform and stable temperature field according to claim 4, characterized in that: The top height of the water baffle is 5-10 cm lower than the top opening of the inner tank body, so as to form an overflow channel above the water baffle.

6. The double-shell thermostatic bath for viscosity measurement capable of providing a uniform and stable temperature field according to claim 1, characterized in that: The double-sided observation window comprises a first glass, a glass fixing frame and a second glass, wherein: The first glass is fixedly disposed on the inner side of the glass fixing frame and is located at the inner observation window of the inner shell structure; The second glass is fixedly arranged on the outer side of the glass fixing frame and is located at the outer observation window of the outer shell structure.

7. The double-shell thermostatic bath for viscosity measurement capable of providing a uniform and stable temperature field according to claim 6, characterized in that: The double-sided observation window further comprises a glass inner locking plate, a glass sealing gasket and a glass outer locking plate, wherein: The glass inner locking plate fixes the first glass and the inner side of the glass fixing frame to the inner shell structure through the corresponding glass sealing gasket; The glass outer locking plate fixes the second glass and the outer side of the glass fixing frame to the outer shell structure through the corresponding glass sealing gasket.

8. The double-shell thermostatic bath for viscosity measurement capable of providing a uniform and stable temperature field according to claim 1, characterized in that: The first mounting plate is a plate-like structure, the overall shape and size of which are the same as the cross-section of the first cavity, covers the top of the first cavity, and has a first mounting hole in the middle for mounting a heating cycle controller.

9. The double-shell thermostatic bath for viscosity measurement capable of providing a uniform and stable temperature field according to claim 1, characterized in that: The second mounting plate is a plate-like structure, the overall shape and size of which are the same as the cross section of the second slot cavity, covers the top of the second slot cavity, and has a plurality of second mounting holes arranged at intervals in the middle thereof for mounting the measuring frame.

10. The double-shell thermostatic bath for viscosity measurement capable of providing a uniform and stable temperature field according to claim 1, characterized in that: Also included is a mixing flow tube, wherein: One end of the mixing tube is arranged at the bottom of the second tank cavity, and the other end extends to the top of the first tank cavity to be connected to a heating cycle controller.

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