Mechanical mechanism capable of metering micro flow of oil injection device

Abstract

The utility model relates to the technical field of liquid flow measurement, in particular to a mechanical mechanism capable of measuring micro flow of an oil injection device, which comprises a casing, a circulation cavity is arranged in the casing, an inlet and an outlet are further arranged on the casing, and the inlet and the outlet are both communicated with the circulation cavity. The rotating rod is rotationally connected with the shell; the metering blades are connected to the rotating rod, the multiple metering blades are arrayed in the circumferential direction of the rotating rod, and a metering cavity is formed between the adjacent metering blades and the side wall of the circulation cavity; the metering assembly is arranged on the shell, connected with the rotating rod and used for measuring the rotating angle of the rotating rod. During working, fluid enters the circulation cavity through the inlet and enters the metering cavity, when the metering cavity is filled with the fluid, the metering blade is pushed to rotate, when the metering cavity filled with the fluid is rotated to be communicated with the outlet, the fluid flows out of the outlet, and then the rotating angle of the rotating rod is monitored through the metering assembly. And the flow of the fluid is converted through the volume of the metering cavity, so that the accurate measurement of the flow of the smaller liquid is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid flow measurement, in particular to a mechanical mechanism for measuring the tiny flow of an oil injection device. Background Art

[0002] An oil injector is a device that sprays material oil on the surface of raw materials. It consists of a nozzle, an oil pump, an oil tank, an electric control device, etc. Its working principle is that the electric control device drives the oil pump motor to work, sending the material oil into the nozzle and spraying it out after being combined with air.

[0003] To ensure the accuracy of the oil liquid sprayed by the nozzle, it is generally necessary to accurately measure the flow rate of the oil liquid entering the nozzle. However, there is currently no instrument that can measure the flow rate of liquid in the ml level in the oil injection device. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: to solve the technical problems in the prior art, the utility model provides a mechanical mechanism for measuring the tiny flow of an oil injection device.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a mechanical mechanism for measuring the tiny flow of an oil injection device, including a housing. A flow cavity is provided inside the housing, and an inlet and an outlet are also provided on the housing. The inlet and the outlet are both communicated with the flow cavity; a rotating rod, the rotating rod is rotatably connected with the housing; metering blades, the metering blades are connected to the rotating rod, and a plurality of them are arranged in a circumferential array along the rotating rod. A metering cavity is formed between adjacent metering blades and the side wall of the flow cavity; a metering component, the metering component is arranged on the housing, the metering component is connected with the rotating rod, and measures the rotation angle of the rotating rod.

[0006] When the mechanical mechanism for measuring the tiny flow of an oil injection device of the utility model works, the fluid enters the flow cavity through the inlet and then enters the metering cavity. When the metering cavity is filled with the fluid, it pushes the metering blade to rotate. When the filled metering cavity rotates to be communicated with the outlet, the fluid flows out from the outlet, and then the metering component monitors the rotation angle of the rotating rod, and calculates the flow rate of the fluid through the volume of the metering cavity, realizing the accurate measurement of the smaller liquid flow rate.

[0007] Further, the cross-section of the metering blade is triangular.

[0008] Further, a first conical cavity and a second conical cavity are also provided inside the housing. The large end of the first conical cavity is communicated with the inlet, and the small end is communicated with the flow cavity. The large end of the second conical cavity is communicated with the outlet, and the small end is communicated with the flow cavity.

[0009] Further, the metering component includes an identification member and a check member. The check member is disposed on the housing and connected to the rotating rod, and the identification member is installed on the housing to identify the rotation angle of the rotating rod.

[0010] Further, the check member includes a ratchet wheel and a pawl. The ratchet wheel is coaxially connected to the rotating rod, the pawl is rotatably connected to the housing through a rotating shaft, and the ratchet wheel is provided with teeth for contacting the pawl.

[0011] Further, a torsion spring is sleeved on the rotating shaft to apply a torsion force to the pawl to make the pawl rotate towards the ratchet wheel.

[0012] Further, a fixing rod is connected to the housing, a pressure-receiving rod is connected to the pawl, one end of the torsion spring abuts against one side of the fixing rod facing the ratchet wheel, and the other end abuts against one side of the pressure-receiving rod away from the ratchet wheel.

[0013] Further, the identification member includes an induction sheet and a sensor. The induction sheet is installed on the ratchet wheel, and the sensor is installed on the housing.

[0014] Further, an installation hole is provided on the housing, and the sensor is installed in the installation hole.

[0015] Further, an observation hole is also provided on the housing, and the observation hole is coaxially arranged with the installation hole.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. During operation, the fluid enters the flow cavity through the inlet and then enters the metering cavity. When the metering cavity is filled with the fluid, the metering blade is pushed to rotate. When the filled metering cavity rotates to communicate with the outlet, the fluid flows out from the outlet, and then the rotation angle of the rotating rod is monitored by the metering component, and the flow rate of the fluid is calculated through the volume of the metering cavity, realizing the accurate measurement of a small liquid flow rate; in addition, different measurement requirements can be met by changing the volume of the metering cavity, realizing the flow rate measurement at the ml level.

[0018] 2. Through the settings of the ratchet wheel, pawl and torsion spring, it is convenient to limit the rotating rod, so that the rotating rod can only rotate in one direction;

[0019] 3. Through the settings of the sensor and the induction sheet, the sensor senses the induction sheet, and each time it is sensed, the rotating rod rotates one circle, thereby realizing the accurate measurement of the fluid flow rate. Description of the Drawings

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1It is a schematic structural diagram showing the external shape of a mechanical mechanism for measuring the minute flow rate of an oil injection device in the present utility model.

[0022] Figure 2 It is a schematic diagram showing the metering vane in the present utility model.

[0023] Figure 3 It is a schematic diagram showing the ratchet and pawl in the present utility model.

[0024] Figure 4 It is a schematic diagram showing the sensor in the present utility model.

[0025] In the figure: 1. housing; 11. flow chamber; 12. inlet; 13. outlet; 14. first conical chamber; 15. second conical chamber; 16. mounting hole; 17. observation hole; 2. rotating rod; 21. metering vane; 22. metering chamber; 3. metering assembly; 31. ratchet; 311. teeth; 312. pressure rod; 32. pawl; 33. torsion spring; 34. fixed rod; 35. induction piece; 36. sensor. Detailed implementation manners

[0026] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic way, so they only show the components related to the present utility model.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more. In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] The utility model discloses a mechanical mechanism for measuring the minute flow rate of an oil injection device.

[0029] Refer to Figures 1 to 4 , a mechanical mechanism for measuring the minute flow rate of an oil injection device, comprising a housing 1. A flow cavity 11 is arranged inside the housing 1. An inlet 12 and an outlet 13 are further arranged on the housing 1, and both the inlet 12 and the outlet 13 are communicated with the flow cavity 11. A rotating rod 2 is rotatably connected to the housing 1. A metering blade 21 is fixedly connected to the side wall of the rotating rod 2. A plurality of metering blades 21 are arranged in a circumferential array along the rotating rod 2. A metering cavity 22 is formed between the adjacent metering blades 21 and the side wall of the flow cavity 11. A metering assembly 3 is arranged on the housing 1. The metering assembly 3 is connected to the rotating rod 2 and measures the rotation angle of the rotating rod 2.

[0030] During operation, the fluid enters the flow cavity 11 through the inlet 12 and enters the metering cavity 22. When the metering cavity 22 is filled with the fluid, it pushes the metering blade 21 to rotate. When the filled metering cavity 22 rotates to be communicated with the outlet 13, the fluid flows out from the outlet 13. Then, the metering assembly 3 monitors the rotation angle of the rotating rod 2, and calculates the flow rate of the fluid through the volume of the metering cavity 22, realizing the accurate measurement of a relatively small liquid flow rate. In this embodiment, the volume of each metering cavity 22 is 1 ml, and when the rotating rod 2 rotates one circle, it is 3 ml.

[0031] Specifically, the cross-section of the metering blade 21 is triangular, so that the metering blade 21 can be better pushed by the fluid. A first conical cavity 14 and a second conical cavity 15 are further opened inside the housing 1. The large end of the first conical cavity 14 is communicated with the inlet 12, and the small end is communicated with the flow cavity 11. The large end of the second conical cavity 15 is communicated with the outlet 13, and the small end is communicated with the flow cavity 11.

[0032] The metering assembly 3 includes an identification member and a check member. The check member is arranged on the housing 1 and connected to the rotating rod 2. The identification member is installed on the housing 1 to identify the rotation angle of the rotating rod 2.

[0033] Specifically, the check member includes a ratchet wheel 31 and a ratchet pawl 32. The ratchet wheel 31 is coaxially and fixedly connected to the rotating rod 2. The ratchet pawl 32 is rotatably connected to the housing 1 through a rotating shaft. A plurality of teeth 311 for contacting the ratchet pawl 32 are arranged in an array on the side wall of the ratchet wheel 31. A torsion spring 33 is sleeved on the rotating shaft to apply a torsion force to the ratchet pawl 32 to make the ratchet pawl 32 rotate towards the ratchet wheel 31.

[0034] More specifically, a fixing rod 34 is connected to the housing 1, a pressure-receiving rod 312 is connected to the ratchet pawl 32, one end of the torsion spring 33 abuts against the side of the fixing rod 34 facing the ratchet wheel 31, and the other end abuts against the side of the pressure-receiving rod 312 away from the ratchet wheel 31.

[0035] Specifically, the identification component includes an induction piece 35 and a sensor 36. The induction piece 35 is installed on the ratchet wheel 31. An installation hole 16 is provided on the housing 1, and the sensor 36 is installed in the installation hole 16 to sense the induction piece 35. The sensor 36 can be an optoelectronic sensor. An observation hole 17 is also provided on the housing 1. The observation hole 17 is coaxially arranged with the installation hole 16, and the observation hole 17 and the installation hole 16 are oppositely arranged on both sides of the induction piece 35.

[0036] Working principle: During operation, the fluid enters the flow cavity 11 through the inlet 12 and then enters the metering cavity 22. When the metering cavity 22 is filled with the fluid, it pushes the metering blade 21 to rotate. At the same time, through the settings of the ratchet wheel 31, the pawl 32 and the torsion spring 33, it is convenient to limit the rotating rod 2, so that the rotating rod 2 can only rotate in one direction. When the filled metering cavity 22 rotates to communicate with the outlet 13, the fluid flows out from the outlet 13. Then, through the settings of the sensor 36 and the induction piece 35, the sensor 36 senses the induction piece 35. Each time it is sensed, the rotating rod 2 rotates one circle, thereby achieving accurate measurement of the fluid flow rate, and calculating the fluid flow rate through the volume of the metering cavity 22 to achieve accurate measurement of a small liquid flow rate. In addition, different measurement requirements can be met by changing the volume of the metering cavity 22 to achieve flow rate measurement at the ml level.

[0037] Taking the above ideal embodiment based on the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A mechanical mechanism for measuring the minute flow rate of an oil injection device, characterized in that, including a housing (1) provided with a circulation cavity (11) therein, and an inlet (12) and an outlet (13) are further provided on the housing (1), and both the inlet (12) and the outlet (13) are communicated with the circulation cavity (11); a rotating rod (2) rotatably connected to the housing (1); metering vanes (21) connected to the rotating rod (2), and a plurality of the metering vanes (21) are arranged in a circumferential array along the rotating rod (2), and a metering cavity (22) is formed between an adjacent metering vane (21) and the side wall of the circulation cavity (11); a metering assembly (3) provided on the housing (1), the metering assembly (3) is connected to the rotating rod (2) and measures the rotation angle of the rotating rod (2).

2. The mechanical mechanism for measuring the minute flow rate of an oil injection device according to claim 1, wherein, The cross section of the metering vane (21) is triangular.

3. A mechanical mechanism for measuring the micro-flow rate of an injectable oil device according to claim 1, characterized in that, A first conical cavity (14) and a second conical cavity (15) are further provided in the housing (1), the large end of the first conical cavity (14) is communicated with the inlet (12), the small end is communicated with the circulation cavity (11), the large end of the second conical cavity (15) is communicated with the outlet (13), and the small end is communicated with the circulation cavity (11).

4. A mechanical mechanism for measuring the minute flow rate of an injectable oil device according to claim 1, characterized in that, The metering assembly (3) includes an identification member and a check member, the check member is provided on the housing (1) and connected to the rotating rod (2), and the identification member is mounted on the housing (1) to identify the rotation angle of the rotating rod (2).

5. The mechanical mechanism for measuring the minute flow rate of an oil injection device as claimed in claim 4, wherein The check member includes a ratchet wheel (31) and a ratchet pawl (32), the ratchet wheel (31) is coaxially connected to the rotating rod (2), the ratchet pawl (32) is rotatably connected to the housing (1) through a rotating shaft, and the ratchet wheel (31) is provided with engaging teeth (311) for contacting the ratchet pawl (32).

6. A mechanical mechanism for measuring the tiny flow rate of an injection oil device according to claim 5, characterized in that A torsion spring (33) is sleeved on the rotating shaft to apply a torsion force to the ratchet pawl (32) to make the ratchet pawl (32) rotate towards the ratchet wheel (31).

7. A mechanical mechanism for measuring the micro flow rate of an injectable oil device as claimed in claim 6, characterized in that, A fixing rod (34) is connected to the housing (1), a pressure-receiving rod (312) is connected to the ratchet pawl (32), one end of the torsion spring (33) abuts against the side of the fixing rod (34) facing the ratchet wheel (31), and the other end abuts against the side of the pressure-receiving rod (312) away from the ratchet wheel (31).

8. The mechanical mechanism for measuring the minute flow rate of an oil injection device according to claim 5, characterized in that, The identification member includes an induction sheet (35) and a sensor (36), the induction sheet (35) is mounted on the ratchet wheel (31), and the sensor (36) is mounted on the housing (1).

9. The mechanical mechanism for measuring the tiny flow rate of an oil injection device according to claim 8, wherein, The housing (1) is provided with a mounting hole (16), and the sensor (36) is mounted in the mounting hole (16).

10. A mechanical mechanism for measuring the tiny flow rate of an oil injection device as described in claim 9, characterized in that, The housing (1) is further provided with an observation hole (17), and the observation hole (17) is coaxially arranged with the mounting hole (16).

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