Elastic scraper flowmeter

Abstract

The utility model relates to the field of flow metering equipment, in particular to an elastic scraper flowmeter which comprises an outer shell, an outer sealing cover arranged at the opening end of the outer shell, a measuring meter head arranged on the outer shell, an inner shell sleeved in the outer shell and an inner sealing cover arranged at the opening end of the inner shell. A rotating shaft is rotatably arranged in the inner shell, the rotating shaft is eccentrically arranged in the inner shell, a rotating wheel is sleeved on the rotating shaft, one side of the rotating wheel is in contact with the inner cavity wall of the inner shell, and two scraper blade assemblies are arranged on the rotating wheel; and each of the two scraper blade assemblies comprises two rod sleeves, a connecting rod arranged between the two rod sleeves, graphite scraper blades movably sleeved on the two rod sleeves respectively, and a spring sleeved on the connecting rod. The utility model provides an elastic scraper flowmeter which improves the measurement precision, reduces the assembly difficulty, and is suitable for being used in occasions where the impurity content in a medium is very high and the medium has a certain solid particle limit.

Description

Technical Field

[0001] The utility model relates to the field of flow metering equipment, in particular to an elastic scraper flow meter. Background Art

[0002] Volumetric flow meter is an instrument that accumulates flow directly according to the volume of discharged fluid. There are many types of volumetric flow meter, such as waist wheel, oval gear, disc, rotary piston, double rotor and hard scraper flow meter. Volumetric flow meter has the characteristics of easy installation, wide range ratio and high measurement accuracy. However, volumetric flow meter has a common disadvantage, that is, strict requirements on the cleanliness of the measured medium. When the medium flows through the flow meter, the solid particles shall not be larger than the minimum gap between each metering chamber and the rotor. Otherwise, due to the influence of solid particles, the flow meter will be stuck or fail early due to wear. In order to adapt to the measurement of various medium flow in production, it is required to install a filter on the upstream side of the flow meter, and the mesh number of the filter must be reasonably selected according to the medium and flow rate flowing through. However, in the case of high impurity content of the fluid, the filter is very easy to be blocked due to uninterrupted operation, and frequent cleaning is required, which makes the pipeline unable to infuse normally, and the flow meter cannot measure.

[0003] The elastic scraper flowmeter is a volumetric flowmeter developed on the basis of the hard scraper flowmeter in combination with practical applications. The structure of the elastic scraper flowmeter is similar to that of the hard scraper flowmeter, in which the scraper of the elastic scraper flowmeter has a large rebound margin. Its characteristic is that the rotor and scraper as the metering components are in elastic contact with the metering chamber, so that the volumetric flowmeter can also be used in situations where the fluid medium contains a high amount of impurities and has a certain limit of solid particles, reducing the occurrence of wear and even jamming and damage. Because its scraper has a large rebound margin, it overcomes many shortcomings and difficulties of the hard scraper flowmeter that are inconvenient to measure.

[0004] The elastic scraper flowmeter mainly includes a shell, a rotor, a spring, a scraper and a baffle. The scraper is installed on the rotor through a spring, and the baffle is installed on the inner wall of the shell. The scraper is in contact with the inner wall of the shell or the baffle by means of the elasticity of the spring. When the baffle and the scraper are in contact, the rotation radius of the scraper will be reduced, thereby pushing the liquid medium out of the shell. However, if there is a gap between the inner wall of the shell and the baffle, the medium will flow out, thereby affecting the measurement accuracy of the flowmeter. Moreover, the inner wall of the shell is an arc-shaped structure, and it is very troublesome to install the scraper on the inner wall of the shell. Therefore, there is room for improvement in the structural design between the inner wall of the shell and the scraper of the elastic scraper flowmeter, thereby improving the measurement accuracy of the elastic scraper flowmeter and improving the assembly efficiency of the elastic scraper flowmeter. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides an elastic scraper flowmeter with improved measurement accuracy and reduced assembly difficulty, which is suitable for use in situations where the medium contains a high amount of impurities and has a certain solid particle limit, and is used to overcome the defects in the prior art.

[0006] The technical solution adopted by the utility model is: an elastic scraper flowmeter, comprising an outer shell, an outer cover arranged on the open end of the outer shell, a measuring head arranged on the outer shell, an inner shell set inside the outer shell, and an inner cover arranged on the open end of the inner shell, the two sides of the inner shell are respectively provided with an inlet hole and an outlet hole, a rotating shaft is rotatably arranged inside the inner shell, the rotating shaft is eccentrically arranged inside the inner shell, a rotating wheel is set on the rotating shaft, one side of the rotating wheel contacts the inner cavity wall of the inner shell, and two scraper assemblies are arranged on the rotating wheel; the two scraper assemblies respectively include two rod sleeves, A connecting rod is arranged between the two rod sleeves, and graphite scrapers are movably mounted on the two rod sleeves and a spring is mounted on the connecting rod. A sleeve groove is provided on the graphite scraper, one side of the connecting rod, the spring and the rod sleeve are respectively located in the sleeve groove, and both ends of the spring are respectively installed on the rod sleeve and the graphite scraper, and the top of the graphite scraper is in contact with the inner cavity wall of the inner shell; a scraper groove is provided on the rotating wheel, and the graphite scraper is movably mounted in the scraper groove; a sleeve hole is provided on the rotating shaft, and the connecting rod is movably mounted in the sleeve hole, and the connecting rods of the two groups of scraper assemblies are perpendicular to each other.

[0007] Preferably, an inlet pipe and an outlet pipe are respectively provided on both sides of the outer shell, the inlet pipe is connected to the inlet hole, the outlet pipe is connected to the outlet hole, the outer peripheral wall of the inner shell between the inlet hole and the outlet hole is installed on the inner cavity wall of the outer shell, and the inner cavity wall of the inner shell above the inlet hole and the outlet hole is in active contact with the impeller.

[0008] Preferably, an oil drain pipe and an air inlet pipe are respectively provided on both sides of the outer shell, and the oil drain pipe and the air inlet pipe are respectively installed on the outer peripheral wall of the outer shell, and an air inlet hole and an oil drain hole are respectively opened on the side wall of the outer shell and the side wall of the inner shell, one end of the air inlet pipe is connected with the inner cavity of the inner shell through the air inlet hole, and one end of the oil drain pipe is connected with the inner cavity of the inner shell through the oil drain hole, and the other end of the oil drain pipe and the other end of the air inlet pipe are respectively provided with plugs.

[0009] Preferably, the inner cover is provided with a through hole, a graphite bearing is sleeved in the through hole, the graphite bearing is connected to the inner cover, and the graphite bearing is movably sleeved on the rotating shaft.

[0010] Preferably, a box body is arranged between the outer cover and the measuring head, and a transmission mechanism is arranged in the box body, the transmission mechanism comprises a first gear assembly, a first transmission shaft, a second gear assembly, a second transmission shaft and a bevel gear transmission assembly and a third transmission shaft, the first transmission shaft, the second transmission shaft and the third transmission shaft are respectively rotatably installed in the box body, the first gear assembly and the second gear assembly respectively comprise two mutually meshing gears, the two gears of the first gear assembly are respectively installed on the rotating shaft and the first transmission shaft, the two gears of the second gear assembly are respectively installed on the first transmission shaft and the second transmission shaft, the bevel gear transmission assembly comprises two mutually meshing bevel gears, the two bevel gears of the bevel gear transmission assembly are respectively mounted on the second transmission shaft and the third transmission shaft, the third transmission shaft is perpendicular to the second transmission shaft, the measuring head comprises a pointer head and a signal sending head, the inspection end of the pointer head is connected to the second transmission shaft, and the detection end of the signal sending head is connected to the third transmission shaft.

[0011] Preferably, a positioning bolt is provided between the outer shell and the inner shell, a first thread groove is provided on the inner cavity wall of the outer shell, a second thread groove is provided on the outer peripheral wall of the inner shell, the first thread groove and the second thread groove form a threaded circular hole, and the inner thread of the threaded circular hole is mounted on the positioning bolt.

[0012] Preferably, a lifting ring and a support are respectively provided on both sides of the shell, and the lifting ring and the support are both installed on the outer peripheral wall of the shell.

[0013] The beneficial effects of the utility model are as follows: first, the utility model sets the rotating shaft eccentrically in the inner shell, controls one side of the runner mounted on the rotating shaft to contact the inner cavity wall of the inner shell, so that a closed area is formed between one side of the runner and the inner cavity wall of the inner shell, that is, the medium transported into the inner shell can only be transmitted from the other side of the runner, thereby improving the measurement progress of the utility model, and the structural design between the inner shell and the runner replaces the role of the block, so as to facilitate the assembly of the utility model. Moreover, the utility model divides the scraper of the inner cavity of the inner shell into four fan-shaped chambers by setting the connecting rods of the two scraper assemblies perpendicular to each other, so as to create a metering chamber in the inner shell, thereby facilitating the flow of the metering medium. In addition, the utility model sets a spring so that the graphite scraper can be extended and retracted on the rod sleeve, thereby avoiding the occurrence of solid particles in the medium being stuck in the graphite scraper, so as to reduce the wear of the graphite scraper and the inner cavity wall of the inner shell.

[0014] Secondly, the utility model provides an inlet pipe and an outlet pipe to facilitate the installation of the outer shell to the medium delivery pipeline, and provides an oil drain pipe and an air intake pipe to facilitate the release of the medium in the inner shell during maintenance of the utility model. In addition, the utility model provides a perforation on the inner cover and a graphite bearing on the perforation to facilitate the rotation of the shaft and the graphite scraper.

[0015] Thirdly, the utility model adjusts the transmission ratio of the rotating shaft and the measuring head through the transmission mechanism, so that the measuring head can receive the flow information transmitted by the rotary pump, and transmit the flow information transmitted by the rotary pump in two copies, so that the pointer head and the signal head can record the flow information respectively, so that if one of the heads fails, the fault can be found in time. Moreover, the utility model fixes the inner shell to the outer shell through the positioning bolts, so as to reduce the shaking of the inner shell and improve the stability of the use of the utility model. In addition, the utility model is convenient for carrying and fixing the utility model by setting a lifting ring and a support on the outer shell, so as to meet the needs of market promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional schematic diagram of the utility model.

[0017] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0018] Figure 3 It is a structural schematic diagram of the utility model.

[0019] Figure 4 It is a schematic diagram of the medium flow direction in the inner shell of the utility model.

[0020] Figure 5 It is a cross-sectional schematic diagram of the scraper assembly in the utility model. DETAILED DESCRIPTION

[0021] like Figures 1 to 5As shown, an elastic scraper flowmeter comprises a shell 1, an outer cover 2 arranged on the open end of the shell 1, a measuring head 3 arranged on the shell 1, an inner shell 4 set in the shell 1, and an inner cover 5 arranged on the open end of the inner shell 4, wherein the two sides of the inner shell 4 are respectively provided with an inlet hole 6 and an outlet hole 7, a rotating shaft 8 is rotatably arranged in the inner shell 4, the rotating shaft 8 is eccentrically arranged in the inner shell 4, a runner 9 is set on the rotating shaft 8, one side of the runner 9 is in contact with the inner cavity wall of the inner shell 4, and two scraper assemblies are arranged on the runner 9; the two scraper assemblies respectively comprise two rod sleeves 10, a connecting rod 11 arranged between the two rod sleeves 10, and two rod sleeves 10 respectively arranged on the two rod sleeves 10. A graphite scraper 12 and a spring 13 mounted on a connecting rod 11 are movably mounted thereon. A sleeve groove 14 is provided on the graphite scraper 12. One side of the connecting rod 11, the spring 13 and the rod sleeve 10 are respectively located in the sleeve groove 14. Both ends of the spring 13 are respectively mounted on the rod sleeve 10 and the graphite scraper 12. The top of the graphite scraper 12 is in contact with the inner cavity wall of the inner shell 4. A scraper groove 15 is provided on the runner 9. The graphite scraper 12 is movably mounted in the scraper groove 15. A sleeve hole 16 is provided on the rotating shaft 8. The scraper groove 15 and the sleeve hole 16 are connected. The connecting rod 11 is movably mounted in the sleeve hole 16. The connecting rods 11 of the two groups of scraper assemblies are perpendicular to each other. The two scraper assemblies form a cross-shaped structure, so that the medium can push the graphite scraper 12, the impeller 9 and the rotating shaft 8 to rotate. The contour line of the inner cavity of the inner shell 4 is made according to the movement law of the two graphite scrapers 12 in the scraper assembly. Since one side of the impeller 9 is in contact with the inner cavity wall of the inner shell 4, the transported medium can only be transported from the other side of the impeller 9, thereby replacing the role of the block to meet the needs of flow measurement. In addition, the spring 13 is set to enable the graphite scraper 12 to retract on the rod sleeve 10, thereby avoiding the occurrence of solid particles in the medium stuck in the graphite scraper 12, so as to reduce the wear of the graphite scraper 12 and the inner cavity wall of the inner shell 4.

[0022] In this embodiment, an inlet pipe 17 and an outlet pipe 18 are respectively provided on both sides of the outer shell 1, the inlet pipe 17 is connected to the inlet hole 6, and the outlet pipe 18 is connected to the outlet hole 7. The outer peripheral wall of the inner shell 4 between the inlet hole 6 and the outlet hole 7 is installed on the inner cavity wall of the outer shell 1, so that the medium flows from the inlet pipe 17 into the inlet hole 6, and the medium flowing into the inner shell 4 will flow into the outlet pipe 18 from the outlet hole 7, so as to measure the flow rate of the medium; the inner cavity wall of the inner shell 4 above the inlet hole 6 and the outlet hole 7 is in active contact with the runner 9, thereby limiting the flow direction of the inner shell medium, that is, the medium can only flow from the middle and lower part of the inner cavity of the inner shell 4.

[0023] Specifically, an oil drain pipe 19 and an air inlet pipe 20 are respectively provided on both sides of the outer shell 1, and the oil drain pipe 19 and the air inlet pipe 20 are respectively installed on the outer peripheral wall of the outer shell 1, and an air inlet hole 21 and an oil drain hole 22 are respectively opened on the side wall of the outer shell 1 and the side wall of the inner shell 4, one end of the air inlet pipe 20 is connected with the inner cavity of the inner shell 4 through the air inlet hole 21, and one end of the oil drain pipe 19 is connected with the inner cavity of the inner shell 4 through the oil drain hole 22, and the other end of the oil drain pipe 19 and the other end of the air inlet pipe 20 are respectively provided with a sealing plug 23, the oil drain pipe 19 and the oil drain hole 22 are used to release the medium in the inner shell 4 when maintaining the utility model, the air inlet hole 21 and the air inlet hole 21 are used to keep the pressure of the inner shell 4 consistent with the external pressure when releasing the medium in the inner shell 4, and the sealing plug 23 is used to seal the oil drain pipe 19 or the air inlet pipe 20 to avoid oil leakage in the oil drain pipe 19 or the air inlet pipe 20 during the detection process of the utility model.

[0024] Please refer again Figure 1 The inner cover 5 is provided with a through hole 24, in which a graphite bearing 25 is sleeved. The graphite bearing 25 is connected to the inner cover 5, and the graphite bearing 25 is movably sleeved on the rotating shaft 8 to facilitate the rotating shaft 8 to be pushed by the medium and rotated.

[0025] Please refer again Figure 1-2A box body 26 is arranged between the outer cover 2 and the measuring head 3, and a transmission mechanism is arranged in the box body 26, and the transmission mechanism includes a first gear assembly 27, a first transmission shaft 28, a second gear assembly 29, a second transmission shaft 30, a bevel gear transmission assembly 31 and a third transmission shaft 32. The first transmission shaft 28, the second transmission shaft 30 and the third transmission shaft 32 are respectively rotatably mounted in the box body 26, the first gear assembly 27 and the second gear assembly 29 respectively include two mutually meshing gears, the two gears of the first gear assembly 27 are respectively mounted on the rotating shaft 8 and the first transmission shaft 28, the two gears of the second gear assembly 29 are respectively mounted on the first transmission shaft 28 and the second transmission shaft 30, the bevel gear transmission assembly 31 includes two mutually meshing bevel gears, the two bevel gears of the bevel gear transmission assembly 31 are respectively mounted on the second transmission shaft 30 and the third transmission shaft 32, and the third transmission shaft 32 is connected to the second transmission shaft 8. The driving shaft 30 is perpendicular to each other, and the measuring head 3 includes a pointer head and a signaling head. The inspection end of the pointer head is connected to the second transmission shaft 30, and the detection end of the signaling head is connected to the third transmission shaft 32. The first gear assembly 27, the first transmission shaft 28 and the second gear assembly 29 are used to adjust the transmission ratio between the second transmission shaft 30 and the rotating shaft 8, so that the pointer head can receive flow information. The bevel gear transmission assembly 31 transmits the rotation of the second transmission shaft 30 to the third transmission shaft 32, so as to facilitate the signaling head to receive flow information. The pointer head is used to intuitively feedback the flow information, and the signaling head is used to send the flow information, so as to obtain the flow information remotely or at close range. When the information of the signaling head and the pointer head is inconsistent, it means that one of the heads has a fault, so as to find the fault in time. It should be noted that the signaling head adopts the LPF-6 explosion-proof photoelectric pulse transmitter produced by Kaifeng Instrument Co., Ltd.

[0026] In this embodiment, a positioning bolt 33 is provided between the outer shell 1 and the inner shell 4, a first thread groove 34 is provided on the inner cavity wall of the outer shell 1, and a second thread groove 35 is provided on the outer peripheral wall of the inner shell 4. The first thread groove 34 and the second thread groove 35 constitute a threaded circular hole, and the inner thread of the threaded circular hole is sleeved on the positioning bolt 33 to facilitate the positioning and fixing of the inner shell 4 on the outer shell 1.

[0027] Specifically, a lifting ring 36 and a support 37 are respectively provided on both sides of the shell 1. The lifting ring 36 and the support 37 are both installed on the outer peripheral wall of the shell 1. The support 37 is used to facilitate the fixing of the utility model, and the lifting ring 36 is used to facilitate the transportation of the utility model.

[0028] The use of this product is as follows: Figures 1 to 5As shown, first, the product is installed in the medium conveying pipeline, that is, the inlet pipe 17 is connected to the upstream medium conveying pipeline, and the outlet pipe 18 is connected to the downstream medium conveying pipeline, so that the upstream medium in the conveying pipeline flows into the inlet hole 6 through the inlet pipe 17, thereby guiding the medium to be conveyed into the inner shell 4. Due to the pressure difference between the inlet pipe 17 and the outlet pipe 18, the medium drives the graphite scraper 12 in the inner shell 4 to rotate by utilizing the existence of the pressure difference, thereby driving the rotating shaft 8 and the impeller 9 to rotate. At the same time, the graphite scraper 12 slides in the scraper groove 15 and the connecting rod 11 slides in the sleeve hole 16, so that a metering chamber is formed between the inner shell 4 and the adjacent graphite scraper 12. Since the medium flows into and fills the metering chamber, as the shaft 8, the impeller 9 and the graphite scraper 12 continue to rotate, the medium in the metering chamber will continuously be discharged from the inlet pipe 17 to the outlet pipe 18, that is, discharged into the downstream pipeline; then, by measuring the angular velocity of the shaft 8 through the measuring head 3, the volume of the medium flowing into the product can be obtained, thereby measuring the flow value of the medium.

[0029] In this embodiment, the rotating shaft is eccentrically arranged in the inner shell 4, and one side of the runner 9 mounted on the rotating shaft 8 is controlled to contact the inner cavity wall of the inner shell 4, so that a closed area is formed between one side of the runner 9 and the inner cavity wall of the inner shell 4, that is, the medium transported into the inner shell 4 can only be transmitted from the other side of the runner 9, thereby improving the measurement progress of the utility model, and the structural design between the inner shell 4 and the runner 9 replaces the function of the block, so as to facilitate the assembly of the utility model. In addition, the utility model divides the scraper of the inner cavity of the inner shell 4 into four fan-shaped chambers by setting the connecting rods 11 of the two scraper assemblies perpendicular to each other, so as to create a metering chamber in the inner shell 4, thereby facilitating the flow of the metering medium. In addition, the utility model enables the graphite scraper 12 to be retracted on the rod sleeve 10 through the spring set, thereby avoiding the occurrence of solid particles in the medium stuck in the graphite scraper 12, so as to reduce the wear of the graphite scraper 12 and the inner cavity wall of the inner shell 4.

[0030] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. An elastic scraper flow meter, comprising a housing (1), an outer cover (2) arranged on an open end of the housing (1), a measuring head (3) arranged on the housing (1), an inner housing (4) fitted inside the housing (1), and an inner cover (5) arranged on the open end of the inner housing (4), characterized in that: An inlet hole (6) and an outlet hole (7) are respectively provided on both sides of the inner shell (4); a rotating shaft (8) is rotatably arranged in the inner shell (4); the rotating shaft (8) is eccentrically arranged in the inner shell (4); a rotating wheel (9) is mounted on the rotating shaft (8); one side of the rotating wheel (9) is in contact with the inner cavity wall of the inner shell (4); and two scraper assemblies are arranged on the rotating wheel (9); The two scraper assemblies respectively comprise two rod sleeves (10), a connecting rod (11) arranged between the two rod sleeves (10), graphite scrapers (12) movably mounted on the two rod sleeves (10), and a spring (13) mounted on the connecting rod (11); a sleeve groove (14) is provided on the graphite scraper (12); one side of the connecting rod (11), the spring (13) and the rod sleeve (10) are respectively located in the sleeve groove (14); two ends of the spring (13) are respectively mounted on the rod sleeve (10) and the graphite scraper (12); and the top of the graphite scraper (12) contacts the inner cavity wall of the inner shell (4); The rotating wheel (9) is provided with a scraper groove (15), and the graphite scraper (12) is movably mounted in the scraper groove (15). The rotating shaft (8) is provided with a sleeve hole (16), and the connecting rod (11) is movably mounted in the sleeve hole (16). The connecting rods (11) of the two sets of scraper assemblies are perpendicular to each other.

2. The elastic scraper flowmeter according to claim 1, characterized in that: An inlet pipe (17) and an outlet pipe (18) are respectively provided on both sides of the outer shell (1); the inlet pipe (17) is connected to the inlet hole (6); the outlet pipe (18) is connected to the outlet hole (7); the outer peripheral wall of the inner shell (4) between the inlet hole (6) and the outlet hole (7) is mounted on the inner cavity wall of the outer shell (1); and the inner cavity wall of the inner shell (4) above the inlet hole (6) and the outlet hole (7) is in active contact with the rotor (9).

3. The elastic scraper flowmeter according to claim 1, characterized in that: An oil drain pipe (19) and an air intake pipe (20) are respectively arranged on both sides of the outer shell (1). The oil drain pipe (19) and the air intake pipe (20) are respectively mounted on the outer peripheral wall of the outer shell (1). An air intake hole (21) and an oil drain hole (22) are respectively opened on the side wall of the outer shell (1) and the side wall of the inner shell (4). One end of the air intake pipe (20) is connected to the inner cavity of the inner shell (4) through the air intake hole (21), and one end of the oil drain pipe (19) is connected to the inner cavity of the inner shell (4) through the oil drain hole (22). The other end of the oil drain pipe (19) and the other end of the air intake pipe (20) are respectively provided with a sealing plug (23).

4. The elastic scraper flowmeter according to claim 1, characterized in that: The inner cover (5) is provided with a through hole (24), a graphite bearing (25) is sleeved in the through hole (24), the graphite bearing (25) is connected to the inner cover (5), and the graphite bearing (25) is movably sleeved on the rotating shaft (8).

5. The elastic scraper flowmeter according to claim 1, characterized in that: A box body (26) is arranged between the outer cover (2) and the measuring head (3), and a transmission mechanism is arranged in the box body (26), wherein the transmission mechanism comprises a first gear assembly (27), a first transmission shaft (28), a second gear assembly (29), a second transmission shaft (30), a bevel gear transmission assembly (31) and a third transmission shaft (32), wherein the first transmission shaft (28), the second transmission shaft (30) and the third transmission shaft (32) are rotatably mounted in the box body (26), respectively, and the first gear assembly (27) and the second gear assembly (29) respectively comprise two gears meshing with each other, and the two gears of the first gear assembly (27) are respectively mounted on the rotating shaft (28), the second transmission shaft (30) and the third transmission shaft (32) The second gear assembly (29) is mounted on the first transmission shaft (28) and the second transmission shaft (30), the two gears of the second gear assembly (29) are respectively mounted on the first transmission shaft (28) and the second transmission shaft (30), the bevel gear transmission assembly (31) comprises two bevel gears meshing with each other, the two bevel gears of the bevel gear transmission assembly (31) are respectively mounted on the second transmission shaft (30) and the third transmission shaft (32), the third transmission shaft (32) is perpendicular to the second transmission shaft (30), the measuring head (3) comprises a pointer head and a signaling head, the inspection end of the pointer head is connected to the second transmission shaft (30), and the detection end of the signaling head is connected to the third transmission shaft (32).

6. The elastic scraper flowmeter according to claim 1, characterized in that: A positioning bolt (33) is provided between the outer shell (1) and the inner shell (4); a first thread groove (34) is provided on the inner cavity wall of the outer shell (1); a second thread groove (35) is provided on the outer peripheral wall of the inner shell (4); the first thread groove (34) and the second thread groove (35) form a threaded circular hole; the inner thread of the threaded circular hole is sleeved on the positioning bolt (33).

7. The elastic scraper flowmeter according to claim 1, characterized in that: A lifting ring (36) and a support (37) are respectively provided on both sides of the shell (1), and the lifting ring (36) and the support (37) are both mounted on the outer peripheral wall of the shell (1).

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