Thermal insulation for a coriolis mass flowmeter

Abstract

The application discloses a heat preservation device for a Coriolis mass flowmeter, and relates to the technical field of the Coriolis mass flowmeter, which comprises a flowmeter, a heat preservation box is arranged outside the flowmeter, an external box is fixedly arranged on one side of the heat preservation box, an internal heat circulation mechanism is arranged in the heat preservation box, an external driving mechanism is arranged in the external box, a heat adjusting mechanism is arranged in the heat preservation box, a plurality of temperature sensors are fixedly connected in the heat preservation box, and a fixed transmission mechanism and a movable transmission mechanism are arranged in the heat preservation box. The internal heat preservation box can be heated through cooperation of the external driving mechanism and the internal heat circulation mechanism, and the temperature in the heat preservation box can be made more uniform through cooperation of the fixed transmission mechanism, the movable transmission mechanism, the heat adjusting mechanism and the plurality of temperature sensors, so that the flowmeter can be preserved in a temperature balanced environment, and the measurement data accuracy of the flowmeter is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of Coriolis mass flowmeter, and particularly relates to a heat preservation device for Coriolis mass flowmeter. BACKGROUND

[0002] Coriolis mass flowmeter, also known as Coriolis force flowmeter, is a device for directly measuring mass flow by using the principle that the Coriolis force generated by fluid flowing in a vibrating pipeline is proportional to the mass flow. The Coriolis mass flowmeter directly measures the mass flow and has the characteristics of high precision, multiple medium and multiple process parameters, and is widely used in petrochemical, pharmaceutical, food and other industries.

[0003] The Coriolis force flowmeter needs to be heated and preserved when measuring the mass flow of the medium. According to the search, a Coriolis mass flowmeter with a coil type structure heat preservation jacket is disclosed in the public document CN216717499U, and a Coriolis mass flowmeter with a heat preservation jacket is disclosed in the public document CN108195438A, and other similar patents, which are not described one by one here. The heat medium is circulated outside to realize heat transfer to heat or preserve the Coriolis force flowmeter. However, the heat medium will lose heat when circulating outside, which will increase the heating cost and cause the problem of insufficient heat utilization.

[0004] Therefore, in order to solve the above problems, the present application provides a heat preservation device for Coriolis mass flowmeter. SUMMARY

[0005] The present application provides a heat preservation device for Coriolis mass flowmeter to solve the above technical problems.

[0006] In order to solve the above technical problems, the present application provides a heat preservation device for Coriolis mass flowmeter, which comprises a flowmeter, a heat preservation box is installed outside the flowmeter, an external box is fixedly installed on one side of the heat preservation box;

[0007] The internal heat circulation mechanism is installed in the heat preservation box, and the internal heat circulation mechanism is used for heating and preserving the flowmeter.

[0008] The external driving mechanism is installed in the external box, and the external driving mechanism is used for driving the heat conducting oil in the internal heat circulation mechanism to circulate.

[0009] The heat adjustment mechanism is installed in the heat preservation box, and the heat adjustment mechanism is used for uniformly distributing the heat in the heat preservation box.

[0010] Temperature sensors, a plurality of temperature sensors are fixedly connected inside the incubator, and the temperature sensors are used for measuring the real-time temperature of multiple parts inside the incubator.

[0011] Fixed transmission mechanism and movable transmission mechanism, a fixed transmission mechanism and a movable transmission mechanism are installed inside the incubator, the movable transmission mechanism is located above the fixed transmission mechanism, and the fixed transmission mechanism and the movable transmission mechanism are used for power transmission to drive the heat adjusting mechanism to operate.

[0012] Preferably, the incubator is composed of an upper box body, a lower box body and a detachable plate, the upper box body is fixedly connected on the top of the lower box body through bolts, the detachable plate is inlaid on the front side of the lower box body, the lower box body and the detachable plate are fixedly connected through bolts, and an opening is formed on one side of the lower box body and communicates with the inside of the external box.

[0013] Preferably, the external box is composed of a main box body and a side plate, the main box body is fixedly connected on one side of the lower box body through bolts, the side plate is fixedly connected on the side of the main box body away from the lower box body through bolts, and a heat dissipation opening is formed on the bottom of the main box body.

[0014] Preferably, the built-in heat circulation mechanism includes a coil pipe, the coil pipe is fixedly connected inside the incubator, an oil tank is fixedly connected between the two ends of the coil pipe, a fixed seat is fixedly connected on the bottom of the oil tank, the oil tank is fixedly connected at the bottom end of the incubator through the fixed seat, an electric heater is fixedly connected inside the oil tank, a transmission rod is movably connected on one side of the oil tank, a propeller is fixedly connected on one end of the transmission rod, and the propeller is located between the two ends of the coil pipe.

[0015] Preferably, the external drive mechanism includes a fixed plate, the fixed plate is fixedly connected inside the external box, an alternating current servo motor is fixedly connected on the top of the fixed plate, a damping pad is fixedly connected between the fixed plate and the alternating current servo motor, the transmission rod is located inside the oil tank and extends into the external box, the transmission rod is movably connected with the incubator, a first belt pulley is fixedly connected on the other end of the transmission rod and the output shaft of the alternating current servo motor, two first belt pulleys are connected with each other through a first belt, and a first tensioner mechanism is further connected with the first belt.

[0016] Preferably, the fixed transmission mechanism includes a second belt pulley, the second belt pulley is fixedly connected on the outer end of the transmission rod, the transmission rod is located inside the incubator, a first shaft rod is movably connected on the inner side wall of the incubator, a third belt pulley is fixedly connected on the tail end of the first shaft rod, the second belt pulley and the third belt pulley are connected with each other through a second belt, and a first friction wheel is fixedly connected on the outer end of the first shaft rod.

[0017] Preferably, the heat adjusting mechanism comprises a second shaft rod movably connected to the inner side wall of the lower box, and a fan blade is fixedly connected to the end of the second shaft rod.

[0018] Preferably, the movable transmission mechanism comprises a movable block penetrating the opening, the movable block is slidably connected to the heat preservation box through the opening, a third shaft rod is movably connected to one side of the movable block, a second friction wheel is fixedly connected to the outer end of the third shaft rod, a fourth pulley is fixedly connected to the end of the third shaft rod, a fifth pulley is fixedly connected to the outer end of the second shaft rod, the fourth pulley and the fifth pulley are connected to each other through a third belt, the third belt is further connected to a second tension pulley mechanism, a connecting block is fixedly connected to the other side of the movable block, the connecting block is located in the external box, and an electric push rod is fixedly connected between the top of the connecting block and the top end of the internal top of the external box.

[0019] Preferably, the movable block is composed of a long plate, a rectangular block and a short plate, the rectangular block is fixedly connected between the long plate and the short plate, the long plate and the short plate are respectively located in the internal top of the heat preservation box and the external box, the rectangular block is slidably connected in the opening, and the long plate can completely cover the opening.

[0020] Preferably, the second tension pulley mechanism comprises a slide rail fixedly connected to the inner side wall of the heat preservation box, a sliding block slidably connected to the slide rail, a fourth shaft rod fixedly connected to the sliding block, a tension pulley movably connected to the end of the fourth shaft rod, and a tension spring fixedly connected between the outer end of the fourth shaft rod and the rear side of the internal top of the heat preservation box.

[0021] Compared with the related art, the heat preservation device for the Coriolis mass flowmeter has the following beneficial effects:

[0022] The heat medium in the heat medium is heated and circulated by the external driving mechanism and the internal heat circulation mechanism, so that the air in the heat preservation box is heated, and the heat preservation function of the flowmeter is realized. Meanwhile, the cooperation of the fixed transmission mechanism, the movable transmission mechanism, the heat adjusting mechanism and the plurality of temperature sensors can make the temperature in the heat preservation box more uniform, so that the flowmeter can be preserved in a temperature balanced environment to ensure the accuracy of the measurement data of the flowmeter. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a first perspective view of the overall structure of the application;

[0024] Figure 2 It is a second perspective view of the overall structure of the application;

[0025] Figure 3 It is a structure diagram of the flowmeter of the application;

[0026] Figure 4 The exploded view of the incubator and the external box of the present application;

[0027] Figure 5 The schematic diagram of the overall sectional structure of the present application;

[0028] Figure 6 The schematic diagram of the internal thermal cycle mechanism, the external driving mechanism and the fixed transmission mechanism structure of the present application;

[0029] Figure 7 The schematic diagram of the internal thermal cycle mechanism of the present application;

[0030] Figure 8 The schematic diagram of the thermal adjustment mechanism and the movable transmission mechanism structure of the present application;

[0031] Figure 9 The schematic diagram of the movable block structure of the present application;

[0032] Figure 10 The schematic diagram of the second tensioning wheel mechanism structure of the present application.

[0033] The figure mark: 1, flow meter, 2, incubator, 21, upper box body, 22, lower box body, 221, opening, 23, detachable plate, 3, external box, 31, main box body, 311, heat dissipation port, 32, side plate, 4, temperature sensor, 5, internal thermal cycle mechanism, 51, coil pipe, 52, oil tank, 53, fixed seat, 54, electric heater, 55, transmission rod, 56, propeller, 6, external driving mechanism, 61, fixed plate, 62, shock pad, 63, AC servo motor, 64, first belt pulley, 65, first belt, 66, first tensioning wheel mechanism, 7, fixed transmission mechanism, 71, second belt pulley, 72, second belt, 73, third belt pulley, 74, first shaft rod, 75, first friction wheel, 8, thermal adjustment mechanism, 81, second shaft rod, 82, fan blade, 9, movable transmission mechanism, 91, movable block, 911, long plate, 912, rectangular block, 913, short plate, 92, third shaft rod, 93, fourth belt pulley, 94, fifth belt pulley, 95, third belt, 96, second friction wheel, 97, connecting block, 98, electric push rod, 99, second tensioning wheel mechanism, 991, slide rail, 992, slide block, 993, fourth shaft rod, 994, tensioning belt pulley, 995, tension spring. DETAILED DESCRIPTION

[0034] Please refer to Figures 1-10 The technical scheme provided by the present application specifically includes the following embodiments:

[0035] The present application includes a flow meter 1, the incubator 2 is installed outside the flow meter 1, and the external box 3 is fixedly installed on one side of the incubator 2.

[0036] The built-in thermal cycle mechanism 5 is installed inside the heat preservation box 2, and is used for heating and preserving the flow meter 1;

[0037] The external driving mechanism 6 is installed inside the external box 3, and is used for driving the heat conduction oil in the built-in thermal cycle mechanism 5 to circulate;

[0038] The thermal regulation mechanism 8 is installed inside the heat preservation box 2, and is used for uniformly distributing heat inside the heat preservation box 2;

[0039] The temperature sensor 4 is fixedly connected to the heat preservation box 2, and is used for measuring the real-time temperature of multiple parts inside the heat preservation box 2;

[0040] The fixed transmission mechanism 7 and the movable transmission mechanism 9 are installed inside the heat preservation box 2, the movable transmission mechanism 9 is located above the fixed transmission mechanism 7, and the fixed transmission mechanism 7 and the movable transmission mechanism 9 are used for power transmission and driving the thermal regulation mechanism 8 to operate.

[0041] The heat preservation box 2 is composed of an upper box body 21, a lower box body 22 and a detachable plate 23, the upper box body 21 is fixedly connected to the top of the lower box body 22 through bolts, the detachable plate 23 is inlaid on the front side of the lower box body 22, the lower box body 22 and the detachable plate 23 are fixedly connected through bolts, and an opening 221 is formed in one side of the lower box body 22 and communicates with the inside of the external box 3.

[0042] The heat preservation box 2 is divided into the upper box body 21, the lower box body 22 and the detachable plate 23, so that the flow meter 1 can be more conveniently installed inside the heat preservation box 2, all the components installed in the heat preservation box 2 are installed on the lower box body 22, and after the detachable plate 23 is removed, the components inside the lower box body 22 can be conveniently assembled, disassembled and maintained, after the detachable plate 23 is installed on the lower box body 22, the inside of the heat preservation box 2 is in a closed state, and heat insulation paint is also sprayed on the inner wall of the heat preservation box 2, so that the heat preservation box 2 has better heat preservation effect.

[0043] The external box 3 is composed of a main box body 31 and a side plate 32, the main box body 31 is fixedly connected to one side of the lower box body 22 through bolts, the side plate 32 is fixedly connected to the side of the main box body 31 away from the lower box body 22 through bolts, and a heat dissipation opening 311 is formed in the bottom of the main box body 31.

[0044] The external box 3 can be used to install the external driving mechanism 6, and the external box 3 is divided into two parts of the main box body 31 and the side plate 32, so that when the external driving mechanism 6 and other components are installed, the side plate 32 can be removed first, and then the side plate 32 can be installed after assembly. The external box 3 does not need to be insulated, and the heat dissipation port 311 at the bottom of the external box 3 can also make the small amount of heat entering the internal part of the external box 3 from the heat radiation of the insulation box 2 and the heat generated by the operation of each component to dissipate.

[0045] The internal heat circulation mechanism 5 includes a coil pipe 51 fixedly connected inside the insulation box 2, an oil tank 52 fixedly connected between the two end portions of the coil pipe 51, a fixed seat 53 fixedly connected to the bottom of the oil tank 52, the oil tank 52 fixedly connected to the bottom end inside the insulation box 2 through the fixed seat 53, an electric heater 54 fixedly connected inside the oil tank 52, a transmission rod 55 penetratingly and movably connected on one side of the oil tank 52, a propeller 56 fixedly connected to one end of the transmission rod 55, and the propeller 56 located between the two end portions of the coil pipe 51.

[0046] The internal heat circulation mechanism 5 can use heat conducting oil as a liquid medium, the electric heater 54 as a driven heating component, and the external driving mechanism 6 to drive the transmission rod 55 and the propeller 56 to rotate. The heat conducting oil in the coil pipe 51 is driven to circulate by the rotation of the propeller 56, so as to heat the air inside the insulation box 2 by heat radiation, and then heat and insulate the flow meter 1. The connection between the transmission rod 55 and the oil tank 52 can adopt a sealing method including but not limited to mechanical sealing, which can prevent the heat conducting oil from leaking and does not affect the rotation of the transmission rod 55. The oil tank 52 and the coil pipe 51 can be made of metal materials with good heat conduction performance, including but not limited to copper pipes.

[0047] The external driving mechanism 6 includes a fixed plate 61 fixedly connected inside the external box 3, an alternating current servo motor 63 fixedly connected to the top of the fixed plate 61, a damping pad 62 fixedly connected between the fixed plate 61 and the alternating current servo motor 63, the transmission rod 55 located inside the oil tank 52 and extending into the internal part of the external box 3, the transmission rod 55 movably connected with the insulation box 2, a first pulley 64 fixedly connected to the other end of the transmission rod 55 and the output shaft of the alternating current servo motor 63, two first pulleys 64 connected with each other through a first belt 65, and a first tensioner mechanism 66 connected with the first belt 65.

[0048] The external driving mechanism 6 is installed inside the external box 3, and a damping pad 62 is arranged on the fixing plate 61 for installing the AC servo motor 63. The AC servo motor 63 has very small noise and vibration, and the damping pad 62 is used in cooperation, and the external driving mechanism 6 is installed outside the heat preservation box 2, so that the vibration generated during the operation of the external driving mechanism 6 is very small, and almost cannot be transmitted to the flowmeter 1, so as not to affect the normal operation of the flowmeter 1. The first pulley 64 and the first belt 65 can be used for transmission to realize the rotation of the transmission rod 55 driven by the AC servo motor 63, and the first tensioner mechanism 66 can keep the first belt 65 in a taut state to avoid the elastic deformation of the first belt 65 and the vibration of the first belt 65 during operation caused by other factors, and also can ensure the normal transmission ratio of the belt transmission.

[0049] The fixed transmission mechanism 7 comprises a second pulley 71 fixedly connected to the outer end of the transmission rod 55, the transmission rod 55 is located inside the heat preservation box 2, a first shaft 74 is movably connected to the inner side wall of the heat preservation box 2, a third pulley 73 is fixed to the end of the first shaft 74, the second pulley 71 and the third pulley 73 are connected by a second belt 72, and the first shaft 74 is fixedly connected with a first friction wheel 75 at the outer end.

[0050] The fixed transmission mechanism 7 realizes the rotation of the first friction wheel 75 by the second pulley 71, the second belt 72 and the third pulley 73 when the transmission rod 55 rotates.

[0051] The heat regulating mechanism 8 comprises a second shaft 81 movably connected to the inner side wall of the lower box body 22, and a fan blade 82 is fixedly connected to the end of the second shaft 81.

[0052] The cooperation of the fixed transmission mechanism 7 and the movable transmission mechanism 9 enables the heat regulating mechanism 8 to rotate the fan blade 82 by the rotation of the transmission rod 55 as the driving, and the rotation of the fan blade 82 can blow the air inside the heat preservation box 2 to flow, so that the air in each part of the heat preservation box 2 flows in disorder, and the air flow carries heat, so that the heat in the heat preservation box 2 is uniformly distributed, that is, the temperature of each part is completely or tends to be completely the same, so that the flowmeter 1 can be in a heat preservation state in a required temperature environment.

[0053] The operation time of the thermal adjusting mechanism 8 is controlled by the detection results of the plurality of temperature sensors 4, the number of which is set to four, which are respectively arranged on the two sides, the bottom and the back of the inside of the heat preservation box 2. The four temperature sensors 4 almost cover all places inside the heat preservation box 2. First, the temperature sensors 4 can measure the temperature inside the heat preservation box 2 in order to control the operation heating temperature of the built-in thermal cycle mechanism 5. At the same time, when the temperature values detected by the four temperature sensors 4 have a large difference, i.e. exceed the set temperature difference, it means that the temperature inside the heat preservation box 2 is not uniform. The non-uniform temperature may have adverse effects on the heat preservation effect of the flowmeter 1 and the operation measurement effect of the flowmeter 1. Therefore, at this time, the heat preservation box 2 can be operated by the thermal adjusting mechanism 8 to make the temperature of all corners inside the heat preservation box 2 the same, so that the flowmeter 1 is in a temperature-same heat preservation box 2 for heat preservation.

[0054] The movable transmission mechanism 9 comprises a movable block 91 which penetrates the opening 221 and is slidably connected with the heat preservation box 2 through the opening 221. One side of the movable block 91 is movably connected with a third shaft rod 92. The outer end of the third shaft rod 92 is fixedly connected with a second friction wheel 96. The end of the third shaft rod 92 is fixedly connected with a fourth belt wheel 93. The outer end of the second shaft rod 81 is fixedly connected with a fifth belt wheel 94. The fourth belt wheel 93 and the fifth belt wheel 94 are connected with each other through a third belt 95. The third belt 95 is further connected with a second tensioner mechanism 99. The other side of the movable block 91 is fixedly connected with a connecting block 97 which is located inside the external box 3. The top of the connecting block 97 is fixedly connected with an electric push rod 98 between the top of the connecting block 97 and the top end inside the external box 3.

[0055] When the thermal adjusting mechanism 8 needs to be driven to operate, the connecting block 97, the movable block 91 and the third shaft rod 92 can be pushed downward by the electric push rod 88 until the second friction wheel 96 on the third shaft rod 92 is in contact with the first friction wheel 75. At this time, the rotation of the second friction wheel 96 can drive the fourth belt wheel 93, the fifth belt wheel 94 and the third belt 95 to operate to drive the thermal adjusting mechanism 8 to operate. The second tensioner mechanism 99 can make the third belt 95 always in a taut state when the fourth belt wheel 93 moves up and down, so as to avoid affecting the transmission ratio of the belt transmission.

[0056] The movable block 91 is composed of a long plate 911, a rectangular block 912 and a short plate 913. The rectangular block 912 is fixedly connected between the long plate 911 and the short plate 913. The long plate 911 and the short plate 913 are respectively located inside the heat preservation box 2 and the external box 3. The rectangular block 912 is slidably connected inside the opening 221. The long plate 911 can completely cover the opening 221.

[0057] The movable block 91 can be made of heat insulation material, and the long plate 911 always covers the opening 221 when the movable block 91 moves up and down, so that the heat in the heat preservation box 2 can not be directly transmitted to the outer box 3, and meanwhile, the up and down movement of the movable block 91 is not affected.

[0058] The second tension wheel mechanism 99 comprises a sliding rail 991 fixedly connected to the inner side wall of the heat preservation box 2, a sliding block 992 slidingly connected to the sliding rail 991, a fourth shaft rod 993 fixedly connected to the sliding block 992, a tension belt pulley 994 movably connected to the end of the fourth shaft rod 993, and a tension spring 995 fixedly connected between the outer end of the fourth shaft rod 993 and the inner back side of the heat preservation box 2.

[0059] The first tension wheel mechanism 66 and the second tension wheel mechanism 99 are the same in structure and function, and the difference lies in that the first tension wheel mechanism 66 and the second tension wheel mechanism 99 are respectively used for tensioning the first belt 65 and the third belt 95, so that the specific structure of the first tension wheel 66 will not be described in detail here.

[0060] The tension spring 995 is connected to the inner back side of the heat preservation box 2, the fourth shaft rod 993 of the tension belt pulley 994 is slidingly connected to the inner side wall of the heat preservation box 2 through the sliding rail 991 and the sliding block 992, when the second tension wheel 96 moves down, the fourth belt pulley 93 moves down together, at this time, the third belt 95 is tensioned, and the tension belt pulley 994 moves to adapt to the tightness of the third belt 95, so that the third belt 95 is always in a good tension state.

[0061] Working principle:

[0062] When in use, the transmission rod 55 and the propeller 56 in the built-in thermal cycle mechanism 5 are driven to rotate by the external driving mechanism 6, and the propeller 56 can drive the heat conducting oil in the oil tank 52 and the coil pipe 51 to circulate and flow when rotating, during which the heat conducting oil circulating and flowing in the coil pipe 51 is heated by the electric heater 54, and the heat in the heat conducting oil is transferred to the air inside the heat preservation box 2 through the coil pipe 51, and the temperature sensors 4 detect the temperature of each part inside the heat preservation box 2, when the temperature difference detected by the multiple temperature sensors 4 is large, at this time the electric push rod 98 in the movable transmission mechanism 9 pushes the movable block 91 to move downward through the connecting block 97, so that the second friction wheel 96 installed on one side of the movable block 91 moves downward and contacts the first shaft rod 74 in the fixed transmission mechanism 7, at this time the fixed transmission mechanism 7 and the movable transmission mechanism 9 cooperate with each other to transmit the driving force of the transmission rod 55 rotating to the thermal adjustment mechanism 8, during which the second shaft rod 81 rotates and drives the fan blades 82 to rotate, and the fan blades 82 can blow the air inside the heat preservation box 2 to flow when rotating, so that the air in each part of the heat preservation box 2 flows in disorder, and the air carries heat when flowing, so that the heat in the heat preservation box 2 is evenly distributed, that is, the temperature of each part is completely or tends to be completely the same, so that the flow meter 1 can be in a heat preservation state in a required temperature environment.

Claims

1. A heat preservation device for a Coriolis mass flow meter, comprising a flow meter (1), characterized in that: An insulation box (2) is installed on the outside of the flow meter (1), and an external box (3) is fixedly installed on one side of the insulation box (2). Built-in heat circulation mechanism (5): The heat preservation box (2) is equipped with a built-in heat circulation mechanism (5), which is used to heat and keep the flow meter (1) warm. The built-in heat circulation mechanism (5) includes a coil (51), which is fixedly connected inside the heat preservation box (2). An oil tank (52) is fixedly connected between the two ends of the coil (51). A fixed seat (53) is fixedly connected to the bottom of the oil tank (52). The oil tank (52) is fixedly connected to the bottom of the heat preservation box (2) through the fixed seat (53). An electric heater (54) is fixedly connected inside the oil tank (52). A transmission rod (55) is movably connected through one side of the oil tank (52). A propeller (56) is fixedly connected to one end of the transmission rod (55). The propeller (56) is located between the two ends of the coil (51). An external drive mechanism (6) is installed inside the external box (3). The external drive mechanism (6) is used to drive the heat transfer oil in the built-in heat circulation mechanism (5) to circulate. A heat regulation mechanism (8) is installed inside the heat preservation box (2). The heat regulation mechanism (8) is used to distribute the heat inside the heat preservation box (2) evenly. Temperature sensor (4): Multiple temperature sensors (4) are fixedly connected inside the heat preservation box (2). The temperature sensors (4) are used to measure the real-time temperature of multiple parts inside the heat preservation box (2). The fixed transmission mechanism (7) and the movable transmission mechanism (9) are installed inside the heat preservation box (2). The movable transmission mechanism (9) is located above the fixed transmission mechanism (7). The fixed transmission mechanism (7) and the movable transmission mechanism (9) are used for power transmission to drive the thermal regulation mechanism (8) to operate.

2. The heat preservation device for a Coriolis mass flow meter according to claim 1, characterized in that, The insulated box (2) consists of an upper box body (21), a lower box body (22) and a detachable plate (23). The upper box body (21) is fixedly connected to the top of the lower box body (22) by bolts. The detachable plate (23) is embedded in the front side of the lower box body (22). The lower box body (22) and the detachable plate (23) are fixedly connected by bolts. An opening (221) is provided on one side of the lower box body (22), and the opening (221) is connected to the interior of the outer box (3).

3. The insulation device for a Coriolis mass flow meter according to claim 2, characterized in that, The external box (3) consists of a main box (31) and a side plate (32). The main box (31) is fixedly connected to one side of the lower box (22) by bolts. The side plate (32) is fixedly connected to the side of the main box (31) away from the lower box (22) by bolts. The bottom of the main box (31) is provided with a heat dissipation vent (311).

4. The insulation device for a Coriolis mass flow meter according to claim 1, characterized in that, The external drive mechanism (6) includes a fixed plate (61), which is fixedly connected inside the external box (3). An AC servo motor (63) is fixedly connected to the top of the fixed plate (61). A shock-absorbing pad (62) is fixedly connected between the fixed plate (61) and the AC servo motor (63). The transmission rod (55) is located inside the oil tank (52) and extends into the external box (3). The transmission rod (55) is movably connected to the heat preservation box (2). The other end of the transmission rod (55) and the output shaft of the AC servo motor (63) are both fixedly connected to a first pulley (64). The two first pulleys (64) are connected to each other through a first belt (65). The first belt (65) is also connected to a first tensioning wheel mechanism (66).

5. The insulation device for a Coriolis mass flow meter according to claim 4, characterized in that, The fixed transmission mechanism (7) includes a second pulley (71), which is fixedly connected to the outer end of the transmission rod (55). The transmission rod (55) is located inside the insulation box (2). A first shaft (74) is movably connected to the inner wall of the insulation box (2). A third pulley (73) is fixed to the end of the first shaft (74). The second pulley (71) and the third pulley (73) are connected to each other through a second belt (72). A first friction wheel (75) is fixedly connected to the outer end of the first shaft (74).

6. The heat preservation device for a Coriolis mass flow meter according to claim 2, characterized in that, The heat regulation mechanism (8) includes a second shaft (81), which is movably connected to the inner wall of the lower housing (22), and a fan blade (82) is fixedly connected to the end of the second shaft (81).

7. The insulation device for a Coriolis mass flow meter according to claim 6, characterized in that, The movable transmission mechanism (9) includes a movable block (91), which passes through an opening (221) and is slidably connected to the insulation box (2) through the opening (221). A third shaft (92) is movably connected to one side of the movable block (91). A second friction wheel (96) is fixedly connected to the outer end of the third shaft (92). A fourth pulley (93) is fixedly connected to the end of the third shaft (92). A fifth pulley (94) is fixedly connected to the outer end of the second shaft (81). The fourth pulley (93) and the fifth pulley (94) are connected to each other through a third belt (95). The third belt (95) is also connected to a second tensioning wheel mechanism (99). A connecting block (97) is fixedly connected to the other side of the movable block (91). The connecting block (97) is located inside the outer box (3). An electric push rod (98) is fixedly connected between the top of the connecting block (97) and the top of the inner part of the outer box (3).

8. The insulation device for a Coriolis mass flow meter according to claim 7, characterized in that, The movable block (91) is composed of a long plate (911), a rectangular block (912) and a short plate (913). The rectangular block (912) is fixedly connected between the long plate (911) and the short plate (913). The long plate (911) and the short plate (913) are located inside the insulated box (2) and the external box (3) respectively. The rectangular block (912) is slidably connected inside the opening (221). The long plate (911) can completely cover the opening (221).

9. The insulation device for a Coriolis mass flow meter according to claim 7, characterized in that, The second tensioning wheel mechanism (99) includes a slide rail (991), which is fixedly connected to the inner wall of the insulation box (2). A slider (992) is slidably connected to the slide rail (991). A fourth shaft (993) is fixedly connected to the slider (992). A tensioning pulley (994) is movably connected to the end of the fourth shaft (993). A tension spring (995) is fixedly connected between the outer end of the fourth shaft (993) and the rear side of the interior of the insulation box (2).

Images