A high-precision temperature and pressure instrument

Abstract

The present invention belongs to the technical field of pressure detection, and discloses a high-precision temperature and pressure instrument, comprising a shell, a glass cover is fixedly installed on the front side of the shell, a sealing cover is fixedly installed on the back side, a fixing block is fixedly installed inside the shell, a threaded rod is fixedly connected to the bottom end of the fixing block, a Bourdon tube is fixedly connected inside the fixing block, a pressure component is fixedly connected to one end of the Bourdon tube, a temperature sensing component is fixedly installed inside the top of the fixing block, two electric telescopic rods are fixedly installed inside the fixing block at the side positions of the temperature sensing component, a positioning plate is fixedly connected to the movable end of the electric telescopic rod, and sliders are fixedly connected to both ends of the positioning plate, which can effectively prevent scale from being generated inside the Bourdon tube to affect the next measurement result of the Bourdon tube, effectively improve the pumping efficiency of the water inlet pipe, and can filter impurities in the water source to prevent blockage inside the water pumping pipe, effectively improve the service life of the water pumping pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure detection, and in particular relates to a high-precision temperature and pressure instrument. Background Art

[0002] Existing temperature and pressure measuring instruments are mainly divided into two categories: temperature measuring instruments and pressure measuring instruments, which perform independent measurements on temperature and pressure respectively. However, in the fields of industrial production, scientific research experiments, etc., it is often necessary to accurately measure both temperature and pressure at the same time, and the existing independent measuring instruments are difficult to meet this demand. A high-precision temperature and pressure instrument is now used to meet the specific scenarios that require high-precision measurement of both temperature and pressure.

[0003] However, when the existing high-precision temperature and pressure instruments are used for measurement, they cannot promptly and effectively treat the water source entering the Bourdon tube. If the water source stays in the Bourdon tube for a long time, scale will be generated. The formation of scale will affect the working accuracy of the Bourdon tube, resulting in inaccurate measurement results. Summary of the invention

[0004] The present invention aims at the problem that the water source entering the Bourdon tube cannot be promptly and effectively treated when the high-precision temperature and pressure instrument in the prior art is used for measurement. The water source will generate scale in the Bourdon tube for a long time. The formation of scale will affect the working accuracy of the Bourdon tube, resulting in inaccurate measurement results. The following technical solutions are proposed:

[0005] A high-precision temperature and pressure instrument comprises a shell, a glass cover is fixedly installed on the front side of the shell, a sealing cover is fixedly installed on the back side, a fixed block is fixedly installed inside the shell, a threaded rod is fixedly connected to the bottom end of the fixed block, a Bourdon tube is fixedly connected to the inside of the fixed block, a pressure assembly is fixedly connected to one end of the Bourdon tube, a temperature sensing assembly is fixedly installed inside the top of the fixed block, two electric telescopic rods are fixedly installed inside the fixed block at the side positions of the temperature sensing assembly, a positioning plate is fixedly connected to the movable end of the electric telescopic rod, sliders are fixedly connected to both ends of the positioning plate, the slider is slidably connected to the inside of the fixed block, a lifting plate is fixedly connected to the bottom end of the positioning plate, the outer surface of the lifting plate is movably connected to the inside of the fixed block, and a pumping assembly is fixedly connected to one end of the fixed block.

[0006] Preferably, the pumping assembly includes a support frame fixedly connected to one end of a fixed block, one end of the support frame is fixedly connected to a water pumping pipe, the bottom end of the water pumping pipe is fixedly installed with a water inlet pipe, a piston is movably connected inside the water pumping pipe, the top of the piston is fixedly connected to a movable rod, the inside of the water pumping pipe is fixedly connected to a water outlet pipe at a position above the piston, the top of the movable rod is movably connected to two movable arms through a pin shaft, one end of the two movable arms are rotatably connected to a linkage rod, the outer surfaces of the two linkage rods are fixedly connected to a rotating disk, the rotating disk is fixedly connected to a rotating rod, the outer surfaces of the two rotating rods are rotatably connected to a positioning block, one end of one of the rotating rods is fixedly connected to a first motor, and one end of the other rotating rod is fixedly connected to a second motor, the bottom ends of the first motor and the second motor are fixedly connected to the support rod, and the bottom ends of the support rods are fixedly connected to the outer surface of the support frame.

[0007] Preferably, the bottom end of the pumping assembly is fixedly connected to a water collecting trough, the outer surface of the water collecting trough is fixedly connected to the inside of the Bourdon tube, a plurality of water collecting covers are fixedly installed at both ends of the water collecting trough, a filter screen is fixedly connected to the inside of the water collecting cover, a filter plate is fixedly connected to the bottom end of the water collecting trough, the outer surface of the lifting plate is movably connected to the top of the Bourdon tube, the top end of the Bourdon tube is movably connected to an extrusion plate at positions on both sides of the lifting plate, the outer surface of the extrusion plate is fixedly connected to a limiting block, the outer surface of the limiting block is movably connected to the inside of the Bourdon tube, one end of the extrusion plate is fixedly connected to a plurality of springs, the other end of the spring is fixedly connected to the inside of the Bourdon tube, and sealing sheets are bonded to the bottom end of the Bourdon tube at positions on both sides of the lifting plate.

[0008] Preferably, the pressure assembly includes a hook fixedly connected to one end of the Bourdon tube, a rotating shaft movably connected inside the hook, a swing arm fixedly connected to one end of the rotating shaft, a disc fixedly connected to one end of the swing arm, one end of the disc rotatably connected to the inside of the fixed block, an arc-shaped rack fixedly connected to the outer surface of the disc, a gear meshingly connected to the outer surface of the arc-shaped rack, a rotating rod fixedly connected to the inside of the gear, and a pressure pointer fixedly connected to one end of the rotating rod.

[0009] Preferably, the temperature sensing component includes a fixed tube fixedly installed inside the top of the fixed block, one end of the fixed tube is rotatably connected to a cylinder, a control rod is rotatably connected to the cylinder, one end of the control rod is fixedly connected to a temperature pointer, the other end of the control rod is fixedly connected to a bimetallic coil, and the other end of the bimetallic coil is fixedly connected to the outer surface of the cylinder.

[0010] Preferably, the pressure pointer and the temperature pointer are both located at the front of the housing, and the pressure pointer is located above the temperature pointer.

[0011] Preferably, the interior of the threaded rod is hollow, one end of the Bourdon tube is connected to the interior of the threaded rod, and one end of the water outlet pipe is fixedly connected to the top end of the threaded rod.

[0012] Preferably, the extrusion plate is made of rubber, and the top and bottom of one end of the extrusion plate are both formed into inclined surfaces.

[0013] Preferably, two pressure switches are fixedly connected to the top of the fixed block below the positioning plate, one of the pressure switches is connected to the first motor, and the other of the pressure switches is connected to the second motor.

[0014] The beneficial effects of the present invention are:

[0015] (1) It can measure pressure and temperature simultaneously, convert pressure and temperature into intuitively readable pointer indications, thereby realizing accurate measurement and display of pressure and temperature, and can quickly seal the Bourdon tube, effectively improving the sealing during sealing, preventing water from flowing out along the gap and contacting the internal parts, and protecting the internal parts from damage.

[0016] (2) It can effectively prevent scale from forming inside the Bourdon tube, which would affect the next measurement result of the Bourdon tube, effectively improve the pumping efficiency of the water inlet pipe, and filter out impurities in the water source to prevent blockage inside the pumping pipe, effectively increasing the service life of the pumping pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a structural schematic diagram of a high-precision temperature and pressure instrument;

[0018] Figure 2 What is shown is the schematic diagram of the installation structure of the glass cover;

[0019] Figure 3 Shown is a schematic diagram of the installation structure of the fixed block;

[0020] Figure 4 Shown is a schematic diagram of the installation structure of the pressure component;

[0021] Figure 5 Shown is a schematic diagram of the installation structure of the threaded rod;

[0022] Figure 6 It is shown that Figure 5 Schematic diagram of the installation structure in area A;

[0023] Figure 7 Shown is a schematic diagram of the installation structure of the lifting plate;

[0024] Figure 8 What is shown is the schematic diagram of the installation structure of the pumping assembly;

[0025] Fig. 9Shown is a schematic diagram of the installation structure of the water collection tank;

[0026] Fig.10 Shown is a schematic diagram of the installation structure of the temperature sensing component;

[0027] Fig.11 Shown is a schematic diagram of the installation structure of the Bourdon tube;

[0028] Fig.12 It is shown that Fig.11 Schematic diagram of the installation structure in the middle B area;

[0029] Fig.13 Shown is a schematic diagram of the installation structure of the extruded plate;

[0030] In the figure: 1, housing; 2, glass cover; 3, sealing cover; 4, fixing block; 5, threaded rod; 6, Bourdon tube; 7, pressure assembly; 71, hook; 72, rotating shaft; 73, swing arm; 74, disc; 75, arc-shaped rack; 76, gear; 77, rotating rod; 78, pressure pointer; 8, temperature sensing assembly; 81, fixing tube; 82, cylinder; 83, control rod; 84, temperature pointer; 85, bimetallic coil; 9, electric telescopic rod; 10, positioning plate; 11, slider; 12, lifting plate; 13. Pumping assembly; 132. Pumping pipe; 133. Water inlet pipe; 134. Piston; 135. Movable rod; 136. Water outlet pipe; 137. Movable arm; 138. Linkage rod; 139. Rotating disk; 1310. Rotating rod; 1311. Positioning block; 1312. First motor; 1313. Second motor; 14. Water collecting tank; 15. Water collecting cover; 16. Filter net; 17. Filter plate; 18. Extrusion plate; 19. Limit block; 20. Spring; 21. Sealing sheet; 22. Pressure switch. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0032] Embodiment 1: The present invention provides a high-precision temperature and pressure instrument, such as Figures 1 to 11As shown, it includes a shell 1, a glass cover 2 is fixedly installed on the front side of the shell 1, a sealing cover 3 is fixedly installed on the back side, a control switch is fixedly connected to the outer surface of the sealing cover 3, and the control switch is electrically connected to the electric telescopic rod 9. A fixed block 4 is fixedly installed inside the shell 1, a threaded rod 5 is fixedly connected to the bottom end of the fixed block 4, a Bourdon tube 6 is fixedly connected inside the fixed block 4, and a pressure component 7 is fixedly connected to one end of the Bourdon tube 6. A temperature sensing component 8 is fixedly installed inside the top of the fixed block 4, and two electric telescopic rods 9 are fixedly installed on the side of the temperature sensing component 8 inside the fixed block 4. A positioning plate 10 is fixedly connected to the movable end of the electric telescopic rod 9, and sliders 11 are fixedly connected to both ends of the positioning plate 10. The slider 11 is slidably connected to the inside of the fixed block 4, a lifting plate 12 is fixedly connected to the bottom end of the positioning plate 10, and the outer surface of the lifting plate 12 is movably connected to the inside of the fixed block 4, and a pumping component 13 is fixedly connected to one end of the fixed block 4.

[0033] like Figure 1 and Figure 8As shown, the pumping assembly 13 includes a support frame fixedly connected to one end of the fixed block 4, one end of the support frame is fixedly connected to a pumping pipe 132, the bottom end of the pumping pipe 132 is fixedly installed with a water inlet pipe 133, the inside of the pumping pipe 132 is movably connected with a piston 134, the top of the piston 134 is fixedly connected with a movable rod 135, the inside of the pumping pipe 132 is located above the piston 134 and is fixedly connected with a water outlet pipe 136, the top of the movable rod 135 is movably connected with two movable arms 137 through a pin shaft, one end of the two movable arms 137 are rotatably connected with a linkage rod 138, the outer surface of the two linkage rods 138 is fixedly connected with a rotating disk 139, and the rotating disk 139 is fixedly connected to the outer surface of the two linkage rods 138. The movable plate 139 is internally fixedly connected with a rotating rod 1310, and the outer surfaces of the two rotating rods 1310 are both rotatably connected with positioning blocks 1311. One end of one rotating rod 1310 is fixedly connected with a first motor 1312, and the other end of the rotating rod 1310 is fixedly connected with a second motor 1313. The bottom ends of the first motor 1312 and the second motor 1313 are both fixedly connected with support rods, and the bottom ends of the support rods are fixedly connected to the outer surface of the support frame. As the positioning plate 10 moves downward, it will contact and trigger the two pressure switches 22, respectively starting the first motor 1312 and the second motor 1313. The rotation directions of 1313 are opposite. The rotation of the first motor 1312 and the rotation of the second motor 1313 both drive the rotating rod 1310 to rotate inside the positioning block 1311. The rotation of the rotating rod 1310 drives the rotating disk 139 to rotate synchronously. The rotation of the rotating disk 139 drives the linkage rod 138 to rotate synchronously. The rotation of the linkage rod 138 drives the movable arm 137 to move. The movement of the movable arm 137 drives the movable rod 135 to move synchronously. The movement of the movable rod 135 drives the piston 134 to move synchronously, thereby driving the piston 134 to move up and down, and the water source inside the Bourdon tube 6 is pumped through the pumping pipe 132. Since the bottom of the pumping pipe 132 is fixedly connected It is connected to a water collecting tank 14, and the water collecting cover 15 can increase the pumping rate. The filter screen 16 can prevent impurities from entering the water pumping pipe 132 and causing blockage. The filter plate 17 connected at the bottom can ensure that all the water in the Bourdon tube 6 is pumped out. When the piston 134 passes through the position of the water outlet pipe 136, the water source will enter the threaded rod 5 along the water outlet pipe 136, which can effectively avoid the formation of scale inside the Bourdon tube 6 and affect the next measurement result of the Bourdon tube 6, effectively improve the pumping efficiency of the water inlet pipe 133, and can filter impurities in the water source to prevent blockage inside the water pumping pipe 132, effectively increasing the service life of the water pumping pipe 132.

[0034] like Figure 1 and Figure 8As shown, a water collecting trough 14 is fixedly connected to the bottom end of the water pumping assembly 13, and the outer surface of the water collecting trough 14 is fixedly connected to the inside of the Bourdon tube 6. A plurality of water collecting covers 15 are fixedly installed at both ends of the water collecting trough 14, and a filter screen 16 is fixedly connected inside the water collecting cover 15. A filter plate 17 is fixedly connected to the bottom end of the water collecting trough 14, and the outer surface of the lifting plate 12 is movably connected to the top of the Bourdon tube 6. The top of the interior of the Bourdon tube 6 is movably connected to an extrusion plate 18 at both sides of the lifting plate 12. The outer surface of the extrusion plate 18 is fixedly connected to a limiting block 19, and the outer surface of the limiting block 19 is movably connected to the inside of the Bourdon tube 6. One end of the extrusion plate 18 is fixedly connected to a plurality of springs 20, and the other end of the spring 20 is fixedly connected to the inside of the Bourdon tube 6. The bottom end of the interior of the Bourdon tube 6 is located on both sides of the lifting plate 12 and is bonded with a sealing sheet 21. The material of the sealing sheet 21 is rubber. When the detection is completed, the electric telescopic rod 9 is started, and the electric telescopic rod 9 will drive the positioning plate 10 The lifting plate 12 is moved downward, and the positioning plate 10 moves downward, driving the slider 11 to slide synchronously inside the fixed block 4. The positioning plate 10 moves downward, driving the lifting plate 12 to move synchronously. As the lifting plate 12 moves, it will contact the inclined surface of the extrusion plate 18, and exert a force on the inclined surface of the extrusion plate 18, so that the extrusion plate 18 exerts a force on the spring 20, causing the spring 20 to deform, driving the extrusion plate 18 to move inward, so that the extrusion plates 18 on both sides squeeze and seal the lifting plate 12, and the lifting plate 12 continues to move toward the inside of the Bourdon tube 6 along the surface of the extrusion plate 18. When the bottom end of the lifting plate 12 contacts the sealing sheets 21 on both sides, the sealing sheets 21 on both sides squeeze and seal the lifting plate 12. At this time, the Bourdon tube 6 is blocked, and the Bourdon tube 6 can be quickly blocked, which effectively improves the sealing performance during blocking, prevents water from flowing out along the gap and contacting the internal parts, and protects the internal parts from damage.

[0035] like Figure 1 and Figure 4As shown, the pressure assembly 7 includes a hook 71 fixedly connected to one end of the Bourdon tube 6, a rotating shaft 72 is movably connected inside the hook 71, a swing arm 73 is fixedly connected to one end of the rotating shaft 72, a disc 74 is fixedly connected to one end of the swing arm 73, one end of the disc 74 is rotatably connected to the inside of the fixed block 4, an arc-shaped rack 75 is fixedly connected to the outer surface of the disc 74, a gear 76 is meshedly connected to the outer surface of the arc-shaped rack 75, a rotating rod 77 is fixedly connected to the inside of the gear 76, and a pressure pointer 78 is fixedly connected to one end of the rotating rod 77. When the water source enters the inside of the Bourdon tube 6 along the inside of the threaded rod 5, as the water source enters A force is applied to the Bourdon tube 6 inside the Bourdon tube 6, and the pressure causes the Bourdon tube 6 to undergo elastic deformation. The deformation of the Bourdon tube 6 drives the hook 71 to move, and the movement of the hook 71 causes the rotating shaft 72 to drive the swing arm 73 to move, so that the swing arm 73 drives the disc 74 to rotate inside the fixed block 4, and the rotation of the disc 74 drives the arc rack 75 to rotate synchronously, and the rotation of the arc rack 75 drives the gear 76 to rotate synchronously, and the rotation of the gear 76 drives the rotating rod 77 to rotate synchronously, and the rotation of the rotating rod 77 drives the pressure pointer 78 to rotate synchronously, so that the pressure value can be displayed according to the position of the pressure pointer 78.

[0036] like Figure 1 and Fig.11 As shown, the temperature sensing component 8 includes a fixed tube 81 fixedly installed inside the top of the fixed block 4, one end of the fixed tube 81 is rotatably connected to a cylinder 82, the cylinder 82 is rotatably connected to a control rod 83, one end of the control rod 83 is fixedly connected to a temperature pointer 84, the other end of the control rod 83 is fixedly connected to a bimetallic coil 85, and the other end of the bimetallic coil 85 is fixedly connected to the outer surface of the cylinder 82. As the water source enters the interior of the housing 1 and the temperature rises, since the bimetallic coil 85 is made of two metals with different properties, the extent of their expansion or contraction when heated or cooled is also different, so that the bimetallic coil 85 as a whole will bend and contract, the bimetallic coil 85 will drive the control rod 83 to rotate, the rotation of the control rod 83 drives the cylinder 82 to rotate synchronously, and the rotation of the cylinder 82 drives the temperature pointer 84 to rotate synchronously, so that the pressure number can be displayed according to the position of the temperature pointer 84.

[0037] like Figure 1 and Figure 2 As shown, the pressure pointer 78 and the temperature pointer 84 are both located at the front of the housing 1, and the pressure pointer 78 is located above the temperature pointer 84, ensuring that the pressure and temperature are measured simultaneously, and the pressure and temperature are converted into intuitively readable pointer representations, thereby achieving accurate measurement and display of pressure and temperature.

[0038] like Figure 1 and Figure 8As shown, the interior of the threaded rod 5 is hollow, one end of the Bourdon tube 6 is connected to the interior of the threaded rod 5, and one end of the water outlet pipe 136 is fixedly connected to the top of the threaded rod 5, ensuring that the water outlet pipe 136 draws the water source inside the Bourdon tube 6 into the interior of the threaded rod 5, preventing the water source from generating scale inside the Bourdon tube 6 and affecting the next measurement result of the Bourdon tube 6.

[0039] like Figure 1 and Fig.13 As shown, the extrusion plate 18 is made of rubber, and the top and bottom of one end of the extrusion plate 18 are both inclined, which facilitates the lifting plate 12 to move smoothly along the inclined surface of the extrusion plate 18, reduces the resistance when the lifting plate 12 contacts the extrusion plate 18, and ensures the smooth and smooth movement of the lifting plate 12.

[0040] like Figure 1 and Figure 6 As shown, the top of the fixed block 4 is located below the positioning plate 10 and is fixedly connected to two pressure switches 22. The two pressure switches 22 are electrically connected to the first motor 1312 and the second motor 1313 respectively. The output ends of the first motor 1312 and the second motor 1313 rotate in opposite directions. One pressure switch 22 is connected to the first motor 1312, and the other pressure switch 22 is connected to the second motor 1313, ensuring that the positioning plate 10 can start the first motor 1312 and the second motor 1313 by squeezing the pressure switch 22 to achieve a linkage effect.

[0041] Working principle: During the actual use of the device, the housing 1 is first connected to the position where the pressure and temperature need to be measured through the threaded rod 5, and then the water source enters the Bourdon tube 6 along the inside of the threaded rod 5. As the water source enters the inside of the Bourdon tube 6, a force is applied to the Bourdon tube 6. The pressure causes the Bourdon tube 6 to undergo elastic deformation. The deformation of the Bourdon tube 6 drives the hook 71 to move. The movement of the hook 71 causes the shaft 72 to drive the swing arm 73 to move, so that the swing arm 73 drives the disc 74 to rotate inside the fixed block 4. The rotation of the disc 74 drives the arc rack 75 to rotate synchronously. The rotation of the arc rack 75 drives the gear 76 to rotate synchronously. The rotation of the gear 76 drives the rotating rod 77 to rotate synchronously. The rotation of the rotating rod 77 drives the pressure pointer 78 to rotate synchronously. The bimetallic coil 85 rotates step by step, so that the pressure value can be displayed according to the position of the pressure pointer 78. Then, as the water source enters the interior of the housing 1, as the temperature rises, since the bimetallic coil 85 is made of two metals with different properties, the extent to which they expand or contract when heated or cooled is also different, so that the bimetallic coil 85 as a whole will bend and contract, and the bimetallic coil 85 will drive the control rod 83 to rotate, and the rotation of the control rod 83 drives the cylinder 82 to rotate synchronously, and the rotation of the cylinder 82 drives the temperature pointer 84 to rotate synchronously, so that the pressure value can be displayed according to the position of the temperature pointer 84, and the pressure and temperature can be measured simultaneously, and the pressure and temperature can be converted into intuitively readable pointer representations, thereby realizing accurate measurement and display of pressure and temperature;

[0042] Then, when the detection is completed, the electric telescopic rod 9 is started, and the electric telescopic rod 9 will drive the positioning plate 10 to move downward. The positioning plate 10 moves downward to drive the slider 11 to slide synchronously inside the fixed block 4. The positioning plate 10 moves downward to drive the lifting plate 12 to move synchronously. As the lifting plate 12 moves, it will contact the inclined surface of the extrusion plate 18, and exert a force on the inclined surface of the extrusion plate 18, so that the extrusion plate 18 exerts a force on the spring 20, causing the spring 20 to deform, driving the extrusion plate 18 to move inward, so that the extrusion plates 18 on both sides squeeze and seal the lifting plate 12, and the lifting plate 12 continues to move toward the inside of the Bourdon tube 6 along the surface of the extrusion plate 18. When the bottom end of the lifting plate 12 contacts the sealing sheets 21 on both sides, the sealing sheets 21 on both sides squeeze and seal the lifting plate 12. At this time, the Bourdon tube 6 is blocked, and the Bourdon tube 6 can be quickly blocked, which effectively improves the sealing performance during blocking, prevents water from flowing out along the gap and contacting the internal parts, and protects the internal parts from damage.

[0043] Then, as the positioning plate 10 moves downward, it will contact and trigger the two pressure switches 22, and start the first motor 1312 and the second motor 1313 respectively. Since the rotation directions of the first motor 1312 and the second motor 1313 are opposite, the rotation of the first motor 1312 and the second motor 1313 both drive the rotating rod 1310 to rotate inside the positioning block 1311, and the rotation of the rotating rod 1310 drives the rotating disk 139 to rotate synchronously, and the rotation of the rotating disk 139 drives the linkage rod 138 to rotate synchronously, and the rotation of the linkage rod 138 drives the movable arm 137 to move, and the movement of the movable arm 137 drives the movable rod 135 to move synchronously, and the movement of the movable rod 135 drives the piston 134 to move synchronously, thereby driving the piston 134 to move back and forth up and down. , the water source inside the Bourdon tube 6 is pumped out through the pumping pipe 132. Since the water collecting tank 14 is fixedly connected to the bottom of the pumping pipe 132, the water collecting cover 15 can increase the pumping rate, and the filter screen 16 can prevent impurities from entering the pumping pipe 132 and causing blockage. The filter plate 17 connected to the bottom can ensure that all the water source inside the Bourdon tube 6 is pumped out. When the piston 134 passes through the position of the outlet pipe 136, the water source will enter the threaded rod 5 along the outlet pipe 136, which can effectively avoid the formation of scale inside the Bourdon tube 6 and affect the next measurement result of the Bourdon tube 6, effectively improve the pumping efficiency of the water inlet pipe 133, and can filter impurities in the water source to prevent blockage inside the pumping pipe 132, effectively improving the service life of the pumping pipe 132.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A high-precision temperature and pressure instrument, characterized in that: The invention comprises a housing (1), wherein a glass cover (2) is fixedly mounted on the front of the housing (1), a sealing cover (3) is fixedly mounted on the back, a fixing block (4) is fixedly mounted inside the housing (1), a threaded rod (5) is fixedly connected to the bottom end of the fixing block (4), a Bourdon tube (6) is fixedly connected inside the fixing block (4), one end of the Bourdon tube (6) is fixedly connected to a pressure assembly (7), a temperature sensing assembly (8) is fixedly mounted inside the top of the fixing block (4), two electric telescopic rods (9) are fixedly mounted inside the fixing block (4) at the side positions of the temperature sensing assembly (8), a positioning plate (10) is fixedly connected to the movable ends of the electric telescopic rods (9), both ends of the positioning plate (10) are fixedly connected to sliders (11), the sliders (11) are slidably connected to the top of the fixing block (4), a lifting plate (12) is fixedly connected to the bottom end of the fixing plate (10), the outer surface of the lifting plate (12) is movably connected to the inside of the fixing block (4), and one end of the fixing block (4) is fixedly connected to a pumping assembly (13); The water pumping assembly (13) comprises a support frame fixedly connected to one end of the fixed block (4); a water pumping pipe (132) is fixedly connected to one end of the support frame; a water inlet pipe (133) is fixedly installed at the bottom end of the water pumping pipe (132); a piston (134) is movably connected inside the water pumping pipe (132); a movable rod (135) is fixedly connected to the top end of the piston (134); a water outlet pipe is fixedly installed inside the water pumping pipe (132) at a position above the piston (134) and is fixedly connected to the water outlet pipe (136); two movable arms (137) are movably connected to the top end of the movable rod (135) via a pin shaft; one end of the two movable arms (137) Both are rotatably connected to a linkage rod (138), the outer surfaces of the two linkage rods (138) are fixedly connected to a rotating disk (139), the interior of the rotating disk (139) is fixedly connected to a rotating rod (1310), the outer surfaces of the two rotating rods (1310) are rotatably connected to a positioning block (1311), one end of one rotating rod (1310) is fixedly connected to a first motor (1312), one end of the other rotating rod (1310) is fixedly connected to a second motor (1313), the bottom ends of the first motor (1312) and the second motor (1313) are fixedly connected to support rods, and the bottom ends of the support rods are fixedly connected to the outer surface of the support frame; The bottom end of the pumping assembly (13) is fixedly connected to a water collecting trough (14), the outer surface of the water collecting trough (14) is fixedly connected to the inside of the Bourdon tube (6), a plurality of water collecting covers (15) are fixedly installed at both ends of the water collecting trough (14), a filter screen (16) is fixedly connected to the inside of the water collecting cover (15), a filter plate (17) is fixedly connected to the bottom end of the water collecting trough (14), the outer surface of the lifting plate (12) is movably connected to the inside of the Bourdon tube (6), the top end of the inside of the Bourdon tube (6) is movably connected to an extrusion plate (18) at positions on both sides of the lifting plate (12), the outer surface of the extrusion plate (18) is fixedly connected to a limit block (19), the outer surface of the limit block (19) is movably connected to the inside of the Bourdon tube (6), one end of the extrusion plate (18) is fixedly connected to a plurality of springs (20), the other end of the spring (20) is fixedly connected to the inside of the Bourdon tube (6), and the bottom end of the inside of the Bourdon tube (6) is bonded to sealing sheets (21) at positions on both sides of the lifting plate (12); The interior of the threaded rod (5) is hollow, one end of the Bourdon tube (6) is connected to the interior of the threaded rod (5), and one end of the water outlet pipe (136) is fixedly connected to the top of the threaded rod (5); The extrusion plate (18) is made of rubber, and the top and bottom of one end of the extrusion plate (18) are both formed into inclined surfaces.

2. The high-precision temperature and pressure instrument according to claim 1, characterized in that: The pressure assembly (7) comprises a hook (71) fixedly connected to one end of the Bourdon tube (6); a rotating shaft (72) is movably connected inside the hook (71); a swing arm (73) is fixedly connected to one end of the rotating shaft (72); a disk (74) is fixedly connected to one end of the swing arm (73); one end of the disk (74) is rotatably connected to the inside of the fixed block (4); an arc-shaped rack (75) is fixedly connected to the outer surface of the disk (74); a gear (76) is meshedly connected to the outer surface of the arc-shaped rack (75); a rotating rod (77) is fixedly connected inside the gear (76); and a pressure pointer (78) is fixedly connected to one end of the rotating rod (77).

3. The high-precision temperature and pressure instrument according to claim 1, characterized in that: The temperature sensing component (8) comprises a fixed tube (81) fixedly mounted inside the top end of the fixed block (4); a cylinder (82) is rotatably connected inside one end of the fixed tube (81); a control rod (83) is rotatably connected inside the cylinder (82); a temperature pointer (84) is fixedly connected to one end of the control rod (83); a bimetallic coil (85) is fixedly connected to the other end of the control rod (83); and the other end of the bimetallic coil (85) is fixedly connected to the outer surface of the cylinder (82).

4. The high-precision temperature and pressure instrument according to claim 1, characterized in that: The pressure pointer (78) and the temperature pointer (84) are both located at the front of the housing (1), and the pressure pointer (78) is located above the temperature pointer (84).

5. The high-precision temperature and pressure instrument according to claim 1, characterized in that: The top end of the fixed block (4) is located below the positioning plate (10) and is fixedly connected to two pressure switches (22), one pressure switch (22) being connected to the first motor (1312), and the other pressure switch (22) being connected to the second motor (1313).

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