Multifunctional cement hydration heat tester and verification method thereof

Abstract

The invention discloses a multifunctional cement hydration heat tester and a verification method thereof, and relates to the technical field of cement hydration heat, the multifunctional cement hydration heat tester comprises a box body, two round holes are formed in the top of the box body, inner cylinders are fixed to the positions, close to the two round holes, of the inner wall of the top of the box body, and groove bodies are formed in the positions, close to the round holes, of the top of the box body; the communicating pipe is communicated with the two inner cylinders; the electromagnetic valve is communicated with the communicating pipe; the air inlet pipe is arranged at the top of the box body in a penetrating manner, and the air inlet pipe is communicated with the electromagnetic valve; and the two stirring assemblies are connected with the two groove bodies correspondingly, and the two stirring assemblies are located in the two inner barrels correspondingly. In the using process, through work of the negative pressure assembly and the transmission assembly, gas extraction between the inner cylinder and the thermos bottle can be achieved, so that the inner cylinder and the thermos bottle are in a nearly-vacuum state, heat exchange between the thermos bottle and the external environment is guaranteed, and the data accuracy is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of cement hydration heat, in particular to a multifunctional cement hydration heat measuring instrument and a calibration method thereof. Background Art

[0002] The cement hydration heat measuring instrument dissolves unhydrated cement and cement hydrated for a certain age in a certain concentration of standard acid under a certain temperature condition around the calorimeter. The difference in the heat of dissolution is measured, which is the hydration heat released by the cement within the specified age.

[0003] In the existing technology, in order to prevent the heat generated by the reaction from being exchanged with the external environment, a constant temperature water bath is mostly used to prevent the loss of reaction heat. However, heat transfer still occurs during the water circulation process. Moreover, due to the large specific heat capacity of water, when the water temperature does not change much but the water volume is large, the heat of the reaction system may be dissipated more into the water, which leads to inaccurate experimental data. Summary of the Invention

[0004] The purpose of the present invention is to provide a multifunctional cement hydration heat measuring instrument and a calibration method thereof, so as to solve the technical problems in the prior art.

[0005] In one aspect, the present invention provides a multifunctional cement hydration heat measuring instrument, comprising:

[0006] The box body has two circular holes on the top of the box body, an inner cylinder is fixed to the inner wall of the top of the box body near the two circular holes, and a groove is opened on the top of the box body near the circular holes;

[0007] a connecting pipe, the connecting pipe being connected to the two inner cylinders;

[0008] a solenoid valve, the solenoid valve being connected to the connecting pipe;

[0009] An air intake pipe is provided on the top of the box body and is connected to the solenoid valve;

[0010] Two stirring assemblies, the two stirring assemblies are respectively connected to the two tank bodies, and the two stirring assemblies are respectively located in the two inner cylinders;

[0011] Two negative pressure components, the two negative pressure components are respectively fixed on the inner walls of the bottom of the two inner cylinders, the negative pressure components are used to extract the gas between the inner cylinder and the stirring component, and the two negative pressure components are connected to the two stirring components one to one;

[0012] A support platform is fixed on the inner wall of the bottom of the box body, and two transmission assemblies are provided on the top of the support platform, and the two transmission assemblies are respectively connected to the two negative pressure assemblies;

[0013] A temperature control component is fixed on the side wall of the box.

[0014] Preferably, the stirring assembly comprises:

[0015] Thermos bottle, wherein the fixed sleeve on the thermos bottle is provided with a support ring, the support ring is adapted to the trough body, a rubber ring is provided at the bottom of the support ring, and a cover body is hingedly connected to the top of the thermos bottle;

[0016] a second transmission plate rotatably disposed on the bottom inner wall of the thermos bottle;

[0017] a plurality of second electromagnets, wherein the plurality of second electromagnets are fixed at equal distances on the bottom of the second transmission plate;

[0018] A stirring blade is fixed on the top of the second transmission plate.

[0019] Preferably, the negative pressure component includes:

[0020] A rotating shaft is rotatably arranged at the bottom of the inner cylinder and passes through the inner wall of the bottom of the inner cylinder;

[0021] An elliptical frame, wherein the elliptical frame is fixedly sleeved on the rotating shaft;

[0022] Two air extraction components, both of which are fixed to the bottom of the inner cylinder and connected to the elliptical frame;

[0023] a first transmission disc, the first transmission disc being fixed to the top of the rotating shaft;

[0024] A plurality of first electromagnets are fixed on the top of the first transmission plate, and the plurality of first electromagnets correspond to the plurality of second electromagnets one by one.

[0025] Preferably, the air extraction component includes:

[0026] A fixing plate, the fixing plate being fixed on the bottom inner wall of the inner cylinder;

[0027] a sleeve, wherein the sleeve is fixed on the fixing plate;

[0028] a first one-way valve and a second one-way valve, wherein the first one-way valve and the second one-way valve are both provided through the side wall of the sleeve;

[0029] an exhaust pipe, the exhaust pipe being connected to the two second one-way valves and passing through the top of the box;

[0030] a piston, the piston being slidably disposed in the sleeve;

[0031] a sleeve rod, wherein the sleeve rod and the piston are fixed;

[0032] The connecting frame is slidably connected to the elliptical frame, and the connecting frame is fixed to the sleeve rod.

[0033] Preferably, the transmission assembly includes:

[0034] a first pulley, the first pulley being rotatably disposed on the top of the support platform, and the first pulley and the rotating shaft being fixed;

[0035] a second pulley, the second pulley being rotatably arranged on the top of the support platform, and a transmission belt being sleeved on the second pulley and the first pulley;

[0036] A support plate, the support plate being fixed on the support platform;

[0037] a first bevel gear, the first bevel gear being rotatably connected to the support plate;

[0038] A connecting shaft, the connecting shaft being rotatably disposed on the top of the support platform and passing through the bottom of the first bevel gear;

[0039] A first spur gear, wherein the first spur gear is fixed to the top of the connecting shaft, a second bevel gear is provided on the top of the first spur gear, and the second bevel gear is meshed with the first bevel gear;

[0040] The second spur gear is fixed on the top of the second pulley, and the second spur gear is meshed with the first spur gear.

[0041] Preferably, it also includes:

[0042] The motor is fixed on the side wall of the box body, and a shaft body is fixed on the output shaft of the motor, and the shaft body and the first bevel gear are fixed.

[0043] Preferably, the temperature control component includes:

[0044] A temperature control box, which is fixed to the side wall of the box and has a temperature control system installed inside;

[0045] a first tube body, the first tube body being connected to the temperature control box and passing through the inner wall of the box body;

[0046] The second tube body is connected to the temperature control box.

[0047] Preferably, it also includes:

[0048] The shell is fixed on the bottom inner wall of the box body, a seat body is rotatably provided at the eccentric position of the bottom inner wall of the shell body, and the seat body and the connecting shaft are fixed, a plurality of connecting grooves are opened on the side wall of the seat body, a plate body is fixed and slidably provided in each connecting groove, and each plate body is in conflict with the inner wall of the shell body, a spring is fixed on the side wall of each plate body, and the spring is fixed to the inner wall of the nearest connecting groove, and the second tube body is connected to the shell body;

[0049] A through hole is provided on the side wall of the housing.

[0050] In another aspect, the present invention provides a method for calibrating a multifunctional cement hydration heat measuring instrument, comprising the following steps:

[0051] Step 1: When using, first inject an appropriate amount of clean water into the box, then put the thermos bottle into the box through the round hole, and place the support ring on the thermos bottle into the groove;

[0052] Step 2: Turn on the switch of the motor. When the motor is working, it drives the first bevel gear to rotate through the shaft, and then drives the two second spur gears to rotate through the second bevel gear and the first spur gear. During the rotation process, the two second spur gears drive the rotating shaft to rotate through the second pulley, the first pulley and the transmission belt. During the rotation of the rotating shaft, the elliptical frame is driven to rotate. Through the action of the elliptical frame, the connecting frame and the sleeve rod, the piston moves back and forth in the sleeve, so that the volume of the space enclosed by the piston and the sleeve increases and decreases periodically.

[0053] Step 3: When the volume of the space increases, the gas between the inner tube and the thermos flask enters the sleeve through the first one-way valve. When the volume of the space decreases, the gas in the space is discharged outside the device through the second one-way valve and the exhaust pipe, thereby gradually reducing the air pressure between the inner tube and the thermos flask until it approaches a vacuum state, thereby reducing the mass of the gas between the inner tube and the thermos flask and reducing the temperature transfer rate.

[0054] Step 4: Then open the lid, place the unhydrated cement and the cement that has been hydrated for a certain period of time in two thermos bottles respectively, then pour in a standard acid reagent of a certain concentration, and then close the lid;

[0055] Step 5: During the rotation of the first spur gear, the connecting shaft is driven to rotate, and then the seat body is driven to rotate. Since the seat body is eccentrically arranged in the shell, and the sliding between the plate body and the connecting groove enables the seat body to cooperate with the plate body to draw water in the box body through the through hole into the shell body during the rotation process, and inject it into the temperature control box through the second tube body. The temperature control system in the temperature control box ensures that the water is at a suitable temperature after passing through the temperature control box, and then injects it into the box body through the first tube body, realizing water circulation in the box body, and the temperature control system ensures that the water in the box body is always at a constant temperature, thereby ensuring the accuracy of the experimental data;

[0056] Step 6: Turn on the switches of the first electromagnet and the second electromagnet. Thereafter, during the rotation of the shaft, the first electromagnet is driven to rotate by the first transmission disk. The magnetic force of the first electromagnet and the second electromagnet causes the second transmission disk to rotate, thereby driving the rotation of the stirring blade, so that the sample and reagent are evenly stirred in the thermos flask, and the temperature in the thermos flask is measured in real time to record the hydration heat data.

[0057] Compared with the prior art, the present invention has the following beneficial effects:

[0058] The present invention, through the provision of a negative pressure component, a transmission component, an inner tube and a thermos, can realize the extraction of gas between the inner tube and the thermos during use through the operation of the negative pressure component and the transmission component, so that the inner tube and the thermos are in a near-vacuum state, thereby ensuring heat exchange between the thermos and the external environment, thereby ensuring the accuracy of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0060] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0061] Figure 2 It is a schematic structural diagram of the box and temperature control box of the present invention;

[0062] Figure 3 2. It is a schematic structural diagram of the first bevel gear and the second bevel gear of the present invention;

[0063] Figure 4 It is a schematic diagram of the housing and connecting shaft structure of the present invention;

[0064] Figure 5 It is a schematic diagram of the cross-sectional structure of the box body of the present invention;

[0065] Figure 6 It is a schematic structural diagram of the first transmission plate and the first electromagnet of the present invention;

[0066] Figure 7 It is a schematic diagram of the cross-sectional structure of the sleeve of the present invention;

[0067] Figure 8 This is a schematic structural diagram of the second transmission plate and the second electromagnet of the present invention;

[0068] Figure 9It is a schematic cross-sectional view of the thermos bottle of the present invention;

[0069] Figure 10 It is a schematic diagram of the cross-sectional structure of the shell of the present invention.

[0070] Reference numerals:

[0071] 1. Box; 2. Motor; 3. Inlet pipe; 4. Exhaust pipe; 5. Cover; 6. Temperature control box; 7. First tube; 8. Inner tube; 9. Thermos flask; 10. Support ring; 11. Connecting pipe; 12. Solenoid valve; 13. Shaft; 14. First bevel gear; 15. Second bevel gear; 16. First straight gear; 17. Housing; 18. Second tube; 19. Support platform; 20. Rotating shaft; 21. Support plate; 22. First pulley; 23. Transmission belt; 24. Second pulley; 25. Second spur gear; 26. First transmission disc; 27. First electromagnet; 28. Fixed plate; 29. ​​Sleeve; 30. Sleeve rod; 31. Piston; 32. First one-way valve; 33. Second one-way valve; 34. Elliptical frame; 35. Stirring blade; 36. Second transmission disc; 37. Second electromagnet; 38. Rubber ring; 39. Connecting shaft; 40. Base; 41. Connecting groove; 42. Plate; 43. Spring; 44. Through hole; 45. Connecting frame. DETAILED DESCRIPTION

[0072] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0073] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0074] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0075] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0076] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0077] The following combination Figures 1 to 10 As shown, the present invention provides a multifunctional cement hydration heat measuring instrument, comprising:

[0078] The box body 1 has two circular holes on the top, and an inner cylinder 8 is fixed to the inner wall of the top of the box body 1 near the two circular holes, and a groove is opened on the top of the box body 1 near the circular holes;

[0079] A connecting pipe 11 is connected to the two inner cylinders 8;

[0080] The solenoid valve 12 is connected to the connecting pipe 11;

[0081] The air intake pipe 3 is provided through the top of the box body 1 and is connected to the solenoid valve 12;

[0082] Two stirring assemblies, the two stirring assemblies are respectively connected to the two tank bodies, and the two stirring assemblies are respectively located in the two inner cylinders 8;

[0083] Two negative pressure components, the two negative pressure components are respectively fixed on the inner wall of the bottom of the two inner cylinders 8, the negative pressure components are used to extract the gas between the inner cylinder 8 and the stirring component, and the two negative pressure components are connected one to one with the two stirring components;

[0084] The support platform 19 is fixed to the inner wall of the bottom of the box body 1. Two transmission components are provided on the top of the support platform 19. The two transmission components are respectively connected to the two negative pressure components;

[0085] The temperature control component is fixed on the side wall of the box body 1.

[0086] Furthermore, the stirring assembly includes:

[0087] Thermos 9, a support ring 10 is fixed on the thermos 9, the support ring 10 is adapted to the trough, a rubber ring 38 is provided at the bottom of the support ring 10, and a cover 5 is hinged on the top of the thermos 9;

[0088] A second transmission plate 36 is rotatably disposed on the bottom inner wall of the thermos flask 9;

[0089] A plurality of second electromagnets 37 are fixed at equal distances on the bottom of the second transmission plate 36;

[0090] The stirring blade 35 is fixed on the top of the second transmission plate 36.

[0091] Furthermore, the negative pressure component includes:

[0092] The rotating shaft 20 is rotatably arranged at the bottom of the inner cylinder 8, and the rotating shaft 20 passes through the inner wall of the bottom of the inner cylinder 8;

[0093] The elliptical frame 34 is fixedly sleeved on the rotating shaft 20;

[0094] Two air extraction components, both of which are fixed to the bottom of the inner cylinder 8 and are connected to the elliptical frame 34;

[0095] A first transmission plate 26, the first transmission plate 26 is fixed to the top of the rotating shaft 20;

[0096] The plurality of first electromagnets 27 are all fixed on the top of the first transmission plate 26 , and the plurality of first electromagnets 27 correspond to the plurality of second electromagnets 37 one by one.

[0097] Turn on the switches of the first electromagnet 27 and the second electromagnet 37. Thereafter, during the rotation of the rotating shaft 20, the first electromagnet 27 is driven to rotate by the first transmission disk 26. The magnetic force of the first electromagnet 27 and the second electromagnet 37 causes the second transmission disk 36 to rotate and thereby drives the rotation of the stirring blade 35, so that the sample and reagent are evenly stirred in the thermos flask 9 to ensure the sealing of the thermos flask 9 and avoid leakage of the reagent. At the same time, it also ensures that the temperature in the thermos flask 9 is constant, thereby ensuring the accuracy of the data.

[0098] Furthermore, the air extraction component includes:

[0099] A fixing plate 28 is fixed to the bottom inner wall of the inner tube 8;

[0100] Sleeve 29, sleeve 29 is fixed on the fixed plate 28;

[0101] A first one-way valve 32 and a second one-way valve 33 are both provided through the side wall of the sleeve 29;

[0102] The exhaust pipe 4 is connected to the two second one-way valves 33, and the exhaust pipe 4 passes through the top of the box body 1;

[0103] A piston 31 is slidably disposed in the sleeve 29;

[0104] The sleeve rod 30 is fixed to the piston 31;

[0105] The connecting frame 45 is slidably connected to the elliptical frame 34 , and the connecting frame 45 is fixed to the sleeve rod 30 .

[0106] During the rotation of the rotating shaft 20, the elliptical frame 34 is driven to rotate. Through the action of the elliptical frame 34, the connecting frame 45 and the sleeve rod 30, the piston 31 moves back and forth in the sleeve 29, so that the volume of the space enclosed by the piston 31 and the sleeve 29 increases and decreases periodically. When the volume of the above-mentioned space increases, the gas between the inner tube 8 and the thermos flask 9 enters the sleeve 29 through the first one-way valve 32. When the volume of the above-mentioned space decreases, the gas in the above-mentioned space is discharged outside the device through the second one-way valve 33 and the exhaust pipe 4, thereby gradually reducing the air pressure between the inner tube 8 and the thermos flask 9 until it approaches a vacuum state, thereby reducing the gas mass between the inner tube 8 and the thermos flask 9, thereby reducing the temperature conduction rate, and further ensuring the accuracy of the data.

[0107] Furthermore, the transmission assembly includes:

[0108] A first pulley 22 is rotatably mounted on top of the support platform 19, and the first pulley 22 and the rotating shaft 20 are fixed;

[0109] A second pulley 24 is rotatably mounted on top of the support platform 19 , and a transmission belt 23 is sleeved on the second pulley 24 and the first pulley 22 ;

[0110] Support plate 21, support plate 21 is fixed on the support platform 19;

[0111] A first bevel gear 14 is rotatably connected to the support plate 21;

[0112] The connecting shaft 39 is rotatably disposed on the top of the support platform 19 and passes through the bottom of the first bevel gear 14;

[0113] A first spur gear 16 is fixed to the top of the connecting shaft 39 . A second bevel gear 15 is provided on the top of the first spur gear 16 , and the second bevel gear 15 is meshed with the first bevel gear 14 .

[0114] The second spur gear 25 is fixed on the top of the second pulley 24, and the second spur gear 25 is engaged with the first spur gear 16.

[0115] Furthermore, it also includes:

[0116] The motor 2 is fixed on the side wall of the box body 1 , and a shaft 13 is fixed on the output shaft of the motor 2 , and the shaft 13 and the first bevel gear 14 are fixed.

[0117] When the switch of the motor 2 is turned on, the motor 2 drives the first bevel gear 14 to rotate through the shaft 13, and then drives the two second spur gears 25 to rotate through the second bevel gear 15 and the first spur gear 16. During the rotation process, the two second spur gears 25 drive the rotating shaft 20 to rotate through the second pulley 24, the first pulley 22 and the transmission belt 23.

[0118] Furthermore, the temperature control component includes:

[0119] The temperature control box 6 is fixed on the side wall of the box body 1, and a temperature control system is set in the temperature control box 6;

[0120] The first tube 7 is connected to the temperature control box 6, and the first tube 7 passes through the inner wall of the box 1;

[0121] The second tube body 18 is connected to the temperature control box 6 .

[0122] Furthermore, it also includes:

[0123] The housing 17 is fixed to the bottom inner wall of the box body 1. A seat 40 is rotatably provided at an eccentric position on the bottom inner wall of the housing 17. The seat 40 is fixed to the connecting shaft 39. A plurality of connecting grooves 41 are provided on the side wall of the seat 40. A plate 42 is fixed and slidably provided in each connecting groove 41. Each plate 42 contacts the inner wall of the housing 17. A spring 43 is fixed to the side wall of each plate 42. The spring 43 is fixed to the inner wall of the nearest connecting groove 41. The second tube 18 is connected to the housing 17.

[0124] A through hole 44 is provided on the side wall of the housing 17 .

[0125] Another aspect of the present invention provides a method for calibrating a multifunctional cement hydration heat measuring instrument, comprising the following steps:

[0126] Step 1: When using, first inject an appropriate amount of clean water into the box body 1, then put the thermos bottle 9 into the box body 1 through the round hole, and place the support ring 10 on the thermos bottle 9 into the groove body;

[0127] Step 2: Turn on the switch of the motor 2. When the motor 2 is working, it drives the first bevel gear 14 to rotate through the shaft 13, and then drives the two second spur gears 25 to rotate through the second bevel gear 15 and the first spur gear 16. During the rotation process, the two second spur gears 25 drive the rotating shaft 20 to rotate through the second pulley 24, the first pulley 22 and the transmission belt 23. During the rotation process of the rotating shaft 20, the elliptical frame 34 is driven to rotate. Through the action of the elliptical frame 34, the connecting frame 45 and the sleeve rod 30, the piston 31 moves back and forth in the sleeve 29, so that the volume of the space enclosed by the piston 31 and the sleeve 29 increases and decreases periodically.

[0128] Step 3: When the volume of the space increases, the gas between the inner tube 8 and the thermos flask 9 enters the sleeve 29 through the first one-way valve 32. When the volume of the space decreases, the gas in the space is discharged outside the device through the second one-way valve 33 and the exhaust pipe 4, thereby gradually reducing the air pressure between the inner tube 8 and the thermos flask 9 until it approaches a vacuum state, thereby reducing the mass of the gas between the inner tube 8 and the thermos flask 9 and reducing the temperature conduction rate.

[0129] Step 4: Then, the cover 5 can be opened, and the unhydrated cement and the cement hydrated for a certain period of time are placed in two thermos bottles 9 respectively, and then a standard acid reagent of a certain concentration is poured in, and then the cover 5 is closed;

[0130] Step 5: During the rotation of the first spur gear 16, the connecting shaft 39 is driven to rotate, thereby driving the seat body 40 to rotate. Since the seat body 40 is eccentrically arranged in the shell 17 and slides between the plate body 42 and the connecting groove 41, the seat body 40 can cooperate with the plate body 42 to draw water in the box 1 through the through hole 44 into the shell 17 during the rotation, and inject it into the temperature control box 6 through the second tube body 18. The temperature control system in the temperature control box 6 ensures that the water is at a suitable temperature after passing through the temperature control box 6, and then is injected into the box 1 through the first tube body 7, realizing water circulation in the box 1. The temperature control system ensures that the water in the box 1 is always at a constant temperature, thereby ensuring the accuracy of the experimental data.

[0131] Step 6: Turn on the switches of the first electromagnet 27 and the second electromagnet 37. Thereafter, during the rotation of the rotating shaft 20, the first electromagnet 27 is driven to rotate by the first transmission disk 26. The magnetic force of the first electromagnet 27 and the second electromagnet 37 causes the second transmission disk 36 to rotate, thereby driving the rotation of the stirring blade 35, so that the sample and reagent are evenly stirred in the thermos flask 9, and the temperature in the thermos flask 9 is measured in real time to record the hydration heat data.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multifunctional cement hydration heat measuring instrument, characterized in that: include: A box body (1), wherein two circular holes are provided on the top of the box body (1), inner cylinders (8) are fixed to the inner wall of the top of the box body (1) near the two circular holes, and a groove is provided on the top of the box body (1) near the circular holes; A connecting pipe (11), wherein the connecting pipe (11) is connected to the two inner cylinders (8); a solenoid valve (12), wherein the solenoid valve (12) is connected to the connecting pipe (11); An air intake pipe (3), the air intake pipe (3) is arranged through the top of the box body (1), and the air intake pipe (3) is communicated with the solenoid valve (12); Two stirring assemblies, the two stirring assemblies are respectively connected to the two tank bodies, and the two stirring assemblies are respectively located in the two inner cylinders (8); Two negative pressure components, the two negative pressure components are respectively fixed on the inner walls of the bottom of the two inner cylinders (8), the negative pressure components are used to extract the gas between the inner cylinder (8) and the stirring component, and the two negative pressure components are connected to the two stirring components one to one; A support platform (19), the support platform (19) is fixed on the inner wall of the bottom of the box body (1), and two transmission assemblies are provided on the top of the support platform (19), and the two transmission assemblies are respectively connected to the two negative pressure assemblies; A temperature control component is fixed on the side wall of the box body (1).

2. A multifunctional cement hydration heat measuring instrument according to claim 1, characterized in that: The stirring assembly comprises: A thermos bottle (9), wherein a support ring (10) is provided on a fixed sleeve of the thermos bottle (9), the support ring (10) is adapted to the trough body, a rubber ring (38) is provided at the bottom of the support ring (10), and a cover body (5) is hingedly connected to the top of the thermos bottle (9); a second transmission disc (36) rotatably disposed on the bottom inner wall of the thermos bottle (9); A plurality of second electromagnets (37), wherein the plurality of second electromagnets (37) are fixed at equal distances on the bottom of the second transmission plate (36); A stirring blade (35) is fixed on the top of the second transmission plate (36).

3. A multifunctional cement hydration heat measuring instrument according to claim 1, characterized in that: The negative pressure component includes: A rotating shaft (20), the rotating shaft (20) is rotatably arranged at the bottom of the inner cylinder (8), and the rotating shaft (20) passes through the inner wall of the bottom of the inner cylinder (8); an elliptical frame (34), wherein the elliptical frame (34) is fixedly sleeved on the rotating shaft (20); Two air extraction components, both of which are fixed to the bottom of the inner cylinder (8), and both of which are connected to the elliptical frame (34); a first transmission disc (26), the first transmission disc (26) being fixed on the top of the rotating shaft (20); A plurality of first electromagnets (27) are provided, wherein the plurality of first electromagnets (27) are all fixed on the top of the first transmission disk (26), and the plurality of first electromagnets (27) and the plurality of second electromagnets (37) correspond one to one.

4. A multifunctional cement hydration heat measuring instrument according to claim 3, characterized in that: The air extraction component comprises: a fixing plate (28), wherein the fixing plate (28) is fixed to the bottom inner wall of the inner cylinder (8); a sleeve (29), wherein the sleeve (29) is fixed on the fixing plate (28); A first one-way valve (32) and a second one-way valve (33), wherein the first one-way valve (32) and the second one-way valve (33) are both provided through the side wall of the sleeve (29); an exhaust pipe (4), the exhaust pipe (4) being in communication with the two second one-way valves (33), and the exhaust pipe (4) passing through the top of the box body (1); a piston (31), wherein the piston (31) is slidably disposed in the sleeve (29); A sleeve rod (30), wherein the sleeve rod (30) and the piston (31) are fixed; A connecting frame (45) is slidably connected to the elliptical frame (34), and the connecting frame (45) and the sleeve rod (30) are fixed.

5. A multifunctional cement hydration heat measuring instrument according to claim 4, characterized in that: The transmission assembly comprises: A first pulley (22), wherein the first pulley (22) is rotatably arranged on the top of the support platform (19), and the first pulley (22) and the rotating shaft (20) are fixed; A second pulley (24), the second pulley (24) is rotatably arranged on the top of the support platform (19), and a transmission belt (23) is sleeved on the second pulley (24) and the first pulley (22); A support plate (21), wherein the support plate (21) is fixed on the support platform (19); A first bevel gear (14), wherein the first bevel gear (14) is rotatably connected to the support plate (21); A connecting shaft (39), wherein the connecting shaft (39) is rotatably arranged on the top of the support platform (19), and the connecting shaft (39) passes through the bottom of the first bevel gear (14); A first spur gear (16), wherein the first spur gear (16) is fixed to the top of the connecting shaft (39), a second bevel gear (15) is provided on the top of the first spur gear (16), and the second bevel gear (15) is meshed with the first bevel gear (14); A second spur gear (25) is fixed on the top of the second pulley (24), and the second spur gear (25) is meshed with the first spur gear (16).

6. A multifunctional cement hydration heat measuring instrument according to claim 5, characterized in that: Also includes: The motor (2) is fixed on the side wall of the box (1), and a shaft (13) is fixed on the output shaft of the motor (2), and the shaft (13) and the first bevel gear (14) are fixed.

7. A multifunctional cement hydration heat measuring instrument according to claim 5, characterized in that: The temperature control component includes: A temperature control box (6), the temperature control box (6) being fixed on the side wall of the box body (1), and a temperature control system being provided in the temperature control box (6); A first tube (7), the first tube (7) is connected to the temperature control box (6), and the first tube (7) passes through the inner wall of the box (1); A second tube (18), wherein the second tube (18) is connected to the temperature control box (6).

8. A multifunctional cement hydration heat measuring instrument according to claim 7, characterized in that: Also includes: A shell (17), wherein the shell (17) is fixed on the bottom inner wall of the box body (1), a seat body (40) is rotatably provided at an eccentric position of the bottom inner wall of the shell (17), and the seat body (40) and the connecting shaft (39) are fixed, a plurality of connecting grooves (41) are provided on the side wall of the seat body (40), a plate body (42) is fixed and slidably provided in each of the connecting grooves (41), and each of the plate bodies (42) contacts the inner wall of the shell (17), a spring (43) is fixed on the side wall of each of the plate bodies (42), and the spring (43) is fixed to the inner wall of the nearest connecting groove (41), and the second tube body (18) is communicated with the shell (17); A through hole (44) is provided on a side wall of the housing (17).

9. A method for calibrating a multifunctional cement hydration heat measuring instrument according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: When using, first inject an appropriate amount of clean water into the box (1), then put the thermos bottle (9) into the box (1) through the circular hole, and place the support ring (10) on the thermos bottle (9) into the tank; Step 2: Turn on the switch of the motor (2). When the motor (2) is working, the first bevel gear (14) is driven to rotate through the shaft (13), and then the two second spur gears (25) are driven to rotate through the second bevel gear (15) and the first spur gear (16). During the rotation process, the two second spur gears (25) drive the rotating shaft (20) to rotate through the second pulley (24), the first pulley (22) and the transmission belt (23). During the rotation process of the rotating shaft (20), the elliptical frame (34) is driven to rotate. Through the action of the elliptical frame (34), the connecting frame (45) and the sleeve rod (30), the piston (31) is caused to reciprocate in the sleeve (29), so that the volume of the space enclosed by the piston (31) and the sleeve (29) increases and decreases periodically. Step 3: When the volume of the above-mentioned space increases, the gas between the inner tube (8) and the thermos flask (9) enters the sleeve (29) through the first one-way valve (32); when the volume of the above-mentioned space decreases, the gas in the above-mentioned space is discharged outside the device through the second one-way valve (33) and the exhaust pipe (4), thereby gradually reducing the air pressure between the inner tube (8) and the thermos flask (9) until it approaches a vacuum state, thereby reducing the mass of the gas between the inner tube (8) and the thermos flask (9), thereby reducing the temperature conduction speed; Step 4: Then, the cover (5) can be opened, and the unhydrated cement and the cement hydrated for a certain period of time are placed in two thermos bottles (9), and then a standard acid reagent of a certain concentration is poured in, and then the cover (5) is closed; Step 5: During the rotation of the first straight gear (16), the connecting shaft (39) is driven to rotate, thereby driving the seat body (40) to rotate. Since the seat body (40) is eccentrically arranged in the housing (17), and the sliding between the plate body (42) and the connecting groove (41) allows the seat body (40) to cooperate with the plate body (42) to draw the water in the box body (1) into the housing (17) through the through hole (44), and inject it into the temperature control box (6) through the second tube body (18). Through the temperature control system in the temperature control box (6), the water is at a suitable temperature after passing through the temperature control box (6), and then injected into the box body (1) through the first tube body (7), realizing the water circulation in the box body (1), and realizing the water in the box body (1) is always in a constant temperature state through the temperature control system, thereby ensuring the accuracy of the experimental data; Step 6: Turn on the switches of the first electromagnet (27) and the second electromagnet (37). Thereafter, during the rotation of the rotating shaft (20), the first electromagnet (27) is driven to rotate by the first transmission disc (26). The magnetic force of the first electromagnet (27) and the second electromagnet (37) causes the second transmission disc (36) to rotate and thereby drives the rotation of the stirring blade (35), so that the sample and the reagent are evenly stirred in the thermos flask (9), and the temperature in the thermos flask (9) is measured in real time to record the data of the heat of hydration.

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