阅读说明：本技术 一种流量检测装置 (Flow detection device ) 是由 王瑞西 赵冬章 常云广 王庆刚 陈骁东 别晓闻 魏恒 肖文发 于 2021-06-01 设计创作，主要内容包括：本发明公开了一种流量检测装置,该装置由电路板密封垫、电路板、密封板、外壳体、钢球、出油接头、计量阀体、密封件、永磁铁、进油接头等组成,计量阀体上设置介质流动的通道,检测阀芯通道；在计量阀芯上设置磁铁；介质从进油接头进入,通过计量阀体内的通道,由计量阀芯计量,经电路板传出流量信号,从出油接头流出,所述的介质可以是液压油、水等流体或干油等润滑脂。本发明既能够保准确检测润滑脂是否正常注入润滑部位,并能够测量注入的总量的一种流量检测装置。(The invention discloses a flow detection device, which comprises a circuit board sealing gasket, a circuit board, a sealing plate, an outer shell, a steel ball, an oil outlet joint, a metering valve body, a sealing element, a permanent magnet, an oil inlet joint and the like, wherein a medium flowing channel is arranged on the metering valve body, and a valve core channel is detected; a magnet is arranged on the metering valve core; the medium enters from the oil inlet joint, passes through a channel in the metering valve body, is metered by the metering valve core, transmits a flow signal through the circuit board and flows out from the oil outlet joint, and the medium can be hydraulic oil, water and other fluids or dry oil and other lubricating grease. The invention provides a flow detection device which can accurately detect whether lubricating grease is normally injected into a lubricating part and can measure the total amount of the lubricating grease.)

1. A flow detection device is composed of a circuit board sealing gasket (2), a circuit board (4), a sealing plate (6), an outer shell (8), a steel ball (10), an oil outlet joint (12), a metering valve core (14), a metering valve body (16), a sealing element (18), a permanent magnet (20), a gland (22) and an oil inlet joint (24), wherein the metering valve core (14) is of a stepped shaft structure, and grooves are formed in two ends of the metering valve core (14); the permanent magnet (20) is placed in grooves at two ends of the metering valve core (14); the metering valve body (16) is provided with an oil filling hole, a grease channel, a metering valve core (14) mounting hole, a sealing element (18) mounting groove and a steel ball (10) mounting hole; the outer shell (8) is provided with a sealing element (18) mounting groove, an oil inlet joint (24) interface, an oil outlet joint (12) interface, a gland (22) interface, a circuit board sealing gasket (2) mounting groove, a circuit board (4) mounting groove, a sealing plate (6) mounting groove and a metering valve body (16) mounting hole.

2. A flow sensing device according to claim 1, wherein: the metering valve cores (14) are of a stepped shaft structure, two small-diameter cylinders and three large-diameter cylinders are adopted to form the stepped shaft structure, the large-diameter cylinders are arranged in the middle and at two ends of the metering valve cores (14) respectively, the two small-diameter cylinders are arranged in the middle of the three large-diameter cylinders, and grooves are formed in the large-diameter cylinders at two ends; the permanent magnet (20) is fixedly connected in grooves at two ends of the metering valve core (14) and moves along with the metering valve core (14); the metering valve core (14) adopts a cylindrical structure, the diameter of the cylinder at the middle part of the metering valve body (16) is smaller, a plane is arranged on the cylindrical surface at the middle part of the metering valve body (16), and an oil filling hole is arranged at the plane and is communicated with the holes of the two metering valve cores (14); a sealing element (18) mounting groove is formed in the circumference of the upper part of the metering valve body (16), and four steel ball (10) mounting holes are formed in the radial direction of the cylinder; two metering valve core (14) mounting holes are axially formed in the metering valve body (16), and two sealing element (18) mounting grooves are formed in two ends of each metering valve core (14) mounting hole; the metering valve body (16) is internally provided with an inclined hole as a grease channel.

3. A flow sensing device according to claim 1, wherein: the outer shell (8) is provided with a sealing element (18) mounting groove, an oil inlet joint (24) interface, an oil outlet joint (12) interface, a gland (22) interface, a circuit board sealing gasket (2) mounting groove, a circuit board (4) mounting groove, a sealing plate (6) mounting groove and a metering valve body (16) mounting hole, wherein the metering valve body (16) is placed in the outer shell (8) and is sealed into a cavity through the sealing elements (18) at the two ends; the oil inlet joint (24) is connected with the outer shell (8) and then is sealed with the plane where the oil filling hole of the metering valve body (16) is located through the sealing piece (18); the oil outlet joint (12) is connected with the outer shell (8); the sealing plates (6) are placed in the outer shell (8), arranged at two ends of the metering valve body (16) and sealed with the metering valve body (16) through sealing pieces (18); the circuit board sealing gaskets (2) are arranged on two sides of the circuit board (4), one circuit board sealing gasket (2) is attached to the sealing plate (6), and the other circuit board sealing gasket (2) is attached to the gland (22); two detection elements of the circuit board (4) correspond to mounting holes where the metering valve cores (14) are located; when the metering valve core (14) moves to the sealing plate (6), the sealing plate (6) limits the stroke of the metering valve core (14), at the moment, a detection element of the circuit board (4) detects a signal transmitted by a permanent magnet (20) at the end part of the metering valve core (14) to carry out one-time metering, the outer diameter and the stroke of the metering valve core (14) are set, so that the amount of the discharged lubricating grease is a fixed value every time the signal of the metering valve core (14) is collected, and the discharge amount of the lubricating grease is metered by accumulating the signal collected from the metering valve core (14).

4. A flow sensing device according to claim 1, wherein: the operation process of the metering valve core (14) is that lubricating grease is injected from an oil filling port of the metering valve body (16), the lubricating grease enters from a gap on the right side in the middle of the metering valve core (14) A, part of the lubricating grease enters from an oil duct a into a gap on the right side in the middle of the metering valve core (14) B and enters the right side of the metering valve core (14) A through an oil duct d, the left side of the metering valve core (14) A is limited by the sealing plate (6) at the moment and is in a limit position, and the lubricating grease on the right side of the metering valve core (14) A is in a high-pressure state; the other part of the lubricating grease enters the left side of the metering valve core (14) B from the oil passage c, the metering valve core (14) B is pushed to move rightwards, and the lubricating grease on the right side of the metering valve core (14) B enters a gap on the left side of the metering valve core (14) A through the oil passage B and flows out from a mounting hole of the No. 1 steel ball (10).

5. A flow sensing device according to claim 4, wherein: the lubricating grease is injected from an oil filling port of the metering valve body (16), the lubricating grease enters from a gap on the right side in the middle of the metering valve core (14) A, a part of the lubricating grease enters into the left side of the metering valve core (14) B from an oil passage d, the right side of the metering valve core B is limited by the sealing plate (6) to be in a limit position at the moment, and the lubricating grease on the left side of the metering valve core B is in a high-pressure state; the other part of the lubricating grease enters a gap on the left side of the middle of the metering valve core (14) B from the oil passage a, enters the left side of the metering valve core (14) A through the oil passage c, pushes the metering valve core (14) A to move rightwards, and the lubricating grease on the right side of the metering valve core (14) A enters a gap on the right side of the middle of the metering valve core (14) B from the oil passage B and flows out from a mounting hole of the No. 2 steel ball (10).

6. A flow sensing device according to claim 4, wherein: the lubricating grease is injected from an oil filling port of the metering valve body (16), the lubricating grease enters from a gap on the left side of the middle of the metering valve core (14) A, part of the lubricating grease enters from an oil passage a into a gap on the left side of the middle of the metering valve core (14) B and enters the left side of the metering valve core (14) A through an oil passage d, the right side of the metering valve core A is limited by the sealing plate (6) at the limit position, and the lubricating grease on the left side of the metering valve core A (14) is in a high-pressure state; the other part of the grease enters the right side of the metering valve core (14) B from the oil passage c, the metering valve core (14) B is pushed to move leftwards, and the grease on the left side of the metering valve core (14) B enters the gap on the right side in the middle of the metering valve core (14) A from the oil passage B and flows out of the mounting hole of the No. 3 steel ball (10).

7. A flow sensing device according to claim 4, wherein: the lubricating grease is injected from an oil filling port of the metering valve body (16), the lubricating grease enters from a gap on the left side of the middle of the metering valve core (14) A, part of the lubricating grease enters from the oil passage d to the right side of the metering valve core (14) B, the left side of the metering valve core (14) B is limited by the sealing plate (6) at the moment and is in a limit position, and the lubricating grease on the right side of the metering valve core (14) B is in a high-pressure state; the other part of the lubricating grease enters a gap on the right side in the middle of the metering valve core (14) B from the oil passage d, enters the right side of the metering valve core (14) A through the oil passage c, pushes the metering valve core (14) A to move leftwards, and the lubricating grease on the left side of the metering valve core (14) A enters the gap on the left side in the middle of the metering valve core (14) B from the oil passage B and flows out from a mounting hole of the No. 4 steel ball (10); at this point A, B the metering spools (14) each complete one reciprocation for the next cycle.

Technical Field

The invention relates to the technical field of equipment lubrication maintenance, in particular to the field of centralized lubrication maintenance of equipment, and provides a flow detection device which is used for detecting the flow of lubricating grease injected into a lubrication part, judging whether the lubricating grease is correctly injected into the lubrication part, measuring the total amount of the injected lubricating grease and realizing testability of a lubrication system.

Background

At present, the common centralized lubrication system in the market mainly comprises the following components: a lubrication pump station, a controller, a distributor, a pipeline and a joint; the working mode is as follows: the controller executes the pause countdown according to a set program after the lubricating system is powered on, when the system pause countdown is finished, the controller is used for connecting a power supply to the lubricating pump station, the lubricating pump station executes the filling countdown according to the program, lubricating grease is pumped out from a plunger pair of the lubricating pump station in the filling process of the lubricating pump station, the lubricating grease enters the distributor through a pipeline, the distributor distributes the lubricating grease for the lubricating part according to a set proportion, and the distributed lubricating grease enters the lubricating part through the pipeline. And when the filling countdown is finished, the lubricating system provides quantitative lubricating grease for the lubricating part, and the system enters the rest countdown again to wait for the next lubrication.

The above is the concentrated lubrication in the ideal state, however, the actual working condition is far more complicated than the ideal state, for example, the normal pumping of the lubricating grease is affected by the disconnection, falling off, blockage and the like of the lubricating pipeline. The lubricating system does not detect and feed back the filling state of the lubricating part and is in an unstable open-loop control state.

Those skilled in the art also try to determine whether the system is working normally by adding a detection sensor to the dispenser to detect whether the dispenser is jammed. However, this method can only detect the dispenser itself, and cannot accurately detect whether the lubrication portion is normally lubricated and maintained.

In view of the above, how to accurately detect whether grease is normally injected into a lubrication site and measure the total amount of grease injection is an urgent technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a flow detection device which can accurately detect whether lubricating grease is normally injected into a lubricating part and can measure the total amount of the lubricating grease.

In order to achieve the purpose, the invention adopts the following technical scheme: a flow detection device is composed of a circuit board sealing gasket, a circuit board, a sealing plate, an outer shell, a steel ball, an oil outlet joint, a metering valve core, a metering valve body, a sealing element, a permanent magnet, a gland, an oil inlet joint and the like; the flow detection device adopts the reciprocating motion of the metering valve core to judge whether the lubricating grease normally passes through or not, and measures the flow of the lubricating grease through the stroke of the metering valve core; the reciprocating operation of the metering valve cores is realized through the alternate motion of the two metering valve cores; the permanent magnet is arranged on the metering valve core, and the signal of the permanent magnet is detected by a Hall device on the circuit board for judgment.

In the flow rate detection device, the metering valve core of the device has a stepped shaft structure, and grooves are formed at two ends of the metering valve core; the permanent magnet is arranged in grooves at two ends of the metering valve core; the metering valve body is provided with an oil filling hole, a grease channel, a metering valve core mounting hole, a mounting groove of a sealing element and a mounting hole of a steel ball; the shell is provided with a sealing element mounting groove, an oil inlet joint interface, an oil outlet joint interface, a gland interface, a circuit board sealing gasket mounting groove, a circuit board mounting groove, a sealing plate mounting groove and a metering valve body mounting hole; the metering valve core is of a stepped shaft structure, preferably, the stepped shaft structure is formed by two cylinders with small diameters and three cylinders with large diameters, the cylinders with large diameters are arranged in the middle and at two ends of the metering valve core respectively, the cylinders with two small diameters are arranged in the middle of the three cylinders with large diameters, grooves are formed in the cylinders with large diameters at two ends, and the device preferably adopts two metering valve cores.

The flow rate detection device is characterized in that: the permanent magnet is fixedly connected in grooves at two ends of the metering valve core and moves along with the metering valve core; the metering valve body is provided with an oil filling hole, a grease channel, a metering valve core mounting hole, a sealing element mounting groove and a steel ball mounting hole. Preferably, the metering valve core is of a cylindrical structure, the diameter of a cylinder at the middle part of the metering valve body is smaller, a plane is arranged on the cylindrical surface at the middle part of the metering valve body, an oil filling hole is arranged at the plane and is communicated with the two metering valve core mounting holes, a sealing element mounting groove is arranged on the circumference of the upper part of the metering valve body, a steel ball mounting hole is arranged in the radial direction of the cylinder, and lubricating grease flows out from the steel ball mounting hole and is conveyed outwards from a gap between the middle part of the metering valve body and the outer shell; two metering valve core mounting holes are axially formed in the metering valve body, and two sealing element mounting grooves are formed in two ends of the two metering valve core mounting holes; an inclined hole is arranged in the metering valve body to serve as a grease channel; the packing member installation groove is provided according to the size of the packing member.

The flow rate detection device is characterized in that: the outer shell is provided with a sealing element mounting groove, an oil inlet joint interface, an oil outlet joint interface, a gland interface, a circuit board sealing gasket mounting groove, a circuit board mounting groove, a sealing plate mounting groove and a metering valve body mounting hole; the metering valve body is arranged in the outer shell and is sealed into a cavity through sealing pieces at two ends; the oil inlet joint is connected with the outer shell and then sealed with the plane where the oil injection hole of the metering valve body is located through a sealing piece; the oil outlet joint is connected with the outer shell, and lubricating grease flows out from a gap between the metering valve body and the outer shell and flows to a lubricating point from the oil outlet joint; the sealing plate is placed inside the outer shell, arranged at two ends of the metering valve body and sealed with the metering valve body through the sealing piece. The circuit board sealing gasket sets up the both sides at the circuit board, and one of them circuit board sealing gasket is laminated with the closing plate, and another circuit board sealing gasket is laminated with the gland, and two detecting element of circuit board correspond with the mounting hole that measurement case was located, and when the measurement case moved to the closing plate, the closing plate was spacing to the stroke of measurement case, and the detecting element of circuit board detected the signal of measurement case tip permanent magnet transmission this moment, carries out a measurement. Since the outer diameter and the stroke of the metering valve core are set, the amount of the grease discharged is a fixed value every time a signal of the metering valve core is collected, and the amount of the grease discharged can be metered by cumulatively collecting the signals of the metering valve core.

The invention has the advantages of ensuring accurate detection of whether the lubricating grease is normally injected into the lubricating part and measuring the injection.

Drawings

FIG. 1 is a diagram of the oil outlet state of the oil outlet of the 1# oil outlet of the flow detection device of the present invention.

FIG. 2 is a diagram of the oil outlet state of the oil outlet port 2# of the flow detection device of the present invention.

FIG. 3 is a diagram of the oil outlet state of the 3# oil outlet of the flow detection device of the present invention.

FIG. 4 is a diagram of the oil outlet state of the 4# oil outlet of the flow detection device of the present invention.

FIG. 5 is a partial cross-sectional view of a flow sensing device of the present invention.

Fig. 6 is a schematic structural diagram of the outer casing of the present invention.

Fig. 7 is a perspective view of a metering valve body of the present invention.

Fig. 8 is a front view of the metering valve body of the present invention.

Fig. 9 is a top view of a metering valve body of the present invention.

Fig. 10 is a cross-sectional view of the metering valve body a of the present invention.

Fig. 11 is a sectional view of the metering valve body B of the present invention.

Fig. 12 is a cross-sectional view of the metering valve body C of the present invention.

Fig. 13 is a cross-sectional view of the metering valve body D of the present invention.

Fig. 14 is a partial cross-sectional view of a metering valve cartridge of the present invention.

Fig. 15 is a schematic view of the gland structure of the present invention.

Figure 16 is a cross-sectional view of the gland a of the present invention.

Fig. 17 is a schematic diagram of the circuit board gasket structure of the present invention.

FIG. 18 is a schematic view of the sealing plate structure of the present invention.

Fig. 19 is a schematic diagram of a circuit board structure according to the present invention.

FIG. 20 is a schematic diagram of the detection circuit of the present invention.

The numbers in the figure are explained as follows: 2. the device comprises a circuit board sealing gasket, 4 parts of a circuit board, 6 parts of a sealing plate, 8 parts of an outer shell, 10 parts of a steel ball, 12 parts of an oil outlet joint, 14 parts of a metering valve core, 16 parts of a metering valve body, 18 parts of a sealing piece, 20 parts of a permanent magnet 22, a gland 24 and an oil inlet joint.

Detailed Description

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 to 20 show a preferred embodiment of the present invention, which shows a flow rate detection device, the device is composed of a circuit board gasket 2, a circuit board 4, a sealing plate 6, an outer shell 8, a steel ball 10, an oil outlet joint 12, a metering valve core 14, a metering valve body 16, a sealing member 18, a permanent magnet 20, a gland 22, an oil inlet joint 24, etc., the metering valve core 14 is of a stepped shaft structure, preferably, a stepped shaft structure is formed by two small diameter cylinders and three large diameter cylinders, the large diameter cylinders are respectively arranged in the middle and at two ends of the metering valve core 14, the two small diameter cylinders are arranged in the middle of the three large diameter cylinders, the grooves are arranged on the large diameter cylinders at two ends, and the device preferably adopts two metering valve cores 14; the permanent magnet 20 is fixedly connected in grooves at two ends of the metering valve core 14 and moves along with the metering valve core 14; the metering valve body 16 is provided with an oil filling hole, a grease channel, a metering valve core 14 mounting hole, a sealing element 18 mounting groove and a steel ball 10 mounting hole. Preferably, the metering valve core 14 is of a cylindrical structure, the diameter of the cylindrical body in the middle of the metering valve body 16 is smaller, a plane is arranged on the cylindrical surface in the middle of the metering valve body 16, and oil filling holes are formed in the plane and communicated with the mounting holes of the two metering valve cores 14. A sealing element 18 mounting groove is arranged on the circumference of the upper part of the metering valve body 16, 4 steel ball 10 mounting holes are arranged in the radial direction of the cylinder, and lubricating grease flows out from the 4 steel ball 10 mounting holes and is conveyed outwards from a gap between the middle part of the metering valve body 16 and the outer shell 8; two metering valve core 14 mounting holes are arranged in the axial direction of the metering valve body 16, and two sealing piece 18 mounting grooves are arranged at two ends of the two metering valve core 14 mounting holes. An inclined hole is provided inside the metering valve body 16 as a grease passage. The packing member 18 has various specifications, and the packing member 18 mounting groove is provided according to the size of the packing member 18. The outer shell body 8 is provided with a sealing element 18 mounting groove, an oil inlet joint 24 interface, an oil outlet joint 12 interface, a gland 22 interface, a circuit board sealing gasket 2 mounting groove, a circuit board 4 mounting groove, a sealing plate 6 mounting groove and a metering valve body 16 mounting hole. The metering valve body 16 is placed inside the outer housing 8 and is closed into a chamber by seals 18 at both ends. The oil inlet joint 24 is connected with the outer shell 8 and then closed with the plane of the oil filling hole of the metering valve body 16 through the sealing piece 18. The oil outlet joint 12 is connected to the outer housing 8, and grease flows out from a gap between the metering valve body 16 and the outer housing 8 and flows from the oil outlet joint 12 to a lubrication point. The sealing plates 6 are placed inside the outer housing 8, disposed at both ends of the metering valve body 16, and are closed off from the metering valve body 16 by sealing members 18. The circuit board sealing gaskets 2 are arranged on two sides of the circuit board 4, one circuit board sealing gasket 2 is attached to the sealing plate 6, the other circuit board sealing gasket 2 is attached to the gland 22, two detection elements of the circuit board 4 correspond to mounting holes where the metering valve cores 14 are located, when the metering valve cores 14 move to the sealing plate 6, the sealing plate 6 limits the stroke of the metering valve cores 14, and the detection elements of the circuit board 4 detect signals transmitted by the permanent magnets 20 at the end parts of the metering valve cores 14 to perform one-time metering. Since the outer diameter and the stroke of the metering valve element 14 are set, the amount of grease discharged is a constant value every time a signal of the metering valve element 14 is collected, and the amount of grease discharged can be measured by cumulatively collecting the signals of the metering valve element 14.

In order to illustrate the operation of the metering valve element 14 more clearly, the principle diagrams of fig. 1 to 4 are explained further below.

As shown in fig. 1, grease is injected from the oil filling port of the metering valve body 16, the grease enters from the gap on the right side of the middle of the metering valve core 14 a, a part of the grease enters from the oil passage a into the gap on the right side of the middle of the metering valve core 14B, and enters the right side of the metering valve core 14 a through the oil passage d, at this time, the left side of the metering valve core 14 a is limited by the sealing plate 6 to be in a limit position, and the grease on the right side of the metering valve core 14 a is in a high-pressure state; the other part of the lubricating grease enters the left side of the B metering valve core 14 from the oil passage c, the B metering valve core 14 is pushed to move rightwards, and the lubricating grease on the right side of the B metering valve core 14 enters a gap on the left side of the A metering valve core 14 through the oil passage B and flows out of the mounting hole of the No. 1 steel ball 10.

As shown in fig. 2, grease is injected from the oil injection port of the metering valve body 16, the grease enters from the gap on the right side of the middle of the metering valve core 14 a, a part of the grease enters from the oil passage d into the left side of the metering valve core 14B, the right side of the metering valve core B is limited by the sealing plate 6 at the limit position, and the grease on the left side of the metering valve core B is in a high-pressure state; the other part of the grease enters the gap on the left side of the middle of the B metering valve core 14 from the oil passage a, enters the left side of the A metering valve core 14 through the oil passage c, pushes the A metering valve core 14 to move rightwards, and the grease on the right side of the A metering valve core 14 enters the gap on the right side of the middle of the B metering valve core 14 from the oil passage B and flows out of the mounting hole of the No. 2 steel ball 10.

As shown in fig. 3, grease is injected from the oil filling port of the metering valve body 16, the grease enters from the gap on the left side of the middle of the metering valve core 14 a, a part of the grease enters from the oil passage a into the gap on the left side of the middle of the metering valve core 14B, and enters the left side of the metering valve core 14 a through the oil passage d, at this time, the right side of the metering valve core a is limited by the sealing plate 6 to be in a limit position, and the grease on the left side of the metering valve core 14 a is in a high-pressure state; the other part of the grease enters the right side of the B metering valve core 14 from the oil passage c, the B metering valve core 14 is pushed to move leftwards, and the grease on the left side of the B metering valve core 14 enters the gap on the right side of the middle of the A metering valve core 14 from the oil passage B and flows out of the mounting hole of the No. 3 steel ball 10.

As shown in fig. 4, grease is injected from the oil filling port of the metering valve body 16, the grease enters from the gap on the left side of the middle of the metering valve core 14 a, a part of the grease enters from the oil passage d into the right side of the metering valve core 14B, the left side of the metering valve core 14B is limited by the sealing plate 6 at the limit position, and the grease on the right side of the metering valve core 14B is in a high-pressure state; the other part of the grease enters the gap on the right side of the middle of the B metering valve core 14 from the oil passage d, enters the right side of the A metering valve core 14 through the oil passage c, pushes the A metering valve core 14 to move leftwards, and the grease on the left side of the A metering valve core 14 enters the gap on the left side of the middle of the B metering valve core 14 from the oil passage B and flows out of the mounting hole of the No. 4 steel ball 10. At this point A, B the metering spools 14 each complete a reciprocating motion and are in the condition shown in figure 1 for the next cycle.

The above is a detailed description of a flow detection device according to the present invention, and the principle and the implementation of the present invention are described herein by using specific examples, and the above description of the examples is only used to help understanding the method and the core idea of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.