CN216385817U - Flow sensing device - Google Patents
Flow sensing device Download PDFInfo
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- CN216385817U CN216385817U CN202122748707.9U CN202122748707U CN216385817U CN 216385817 U CN216385817 U CN 216385817U CN 202122748707 U CN202122748707 U CN 202122748707U CN 216385817 U CN216385817 U CN 216385817U
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- hollow pipe
- flow
- magnetic metal
- sensing device
- flow sensing
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Abstract
The utility model relates to a flow sensing device, which comprises a hollow tube; lining: which are arranged at the two axial ends of the hollow pipe; sheathing: which is movably connected to the bushing; non-magnetic metal float: the water flow impact device is arranged in the hollow pipe and can move along the axial direction of the hollow pipe under the impact of water flow; a proximity switch: the non-magnetic metal floater moving device is arranged on the pipe wall of the hollow pipe and used for sensing signals and sending signals when the non-magnetic metal floater moves to a position corresponding to the proximity switch in the radial direction. According to the utility model, after the non-magnetic metal floater is arranged in the hollow pipe, the monitoring error and even failure of the flow sensing device caused by the fact that the magnetic floater in the prior art absorbs metal ions such as iron ions in water can be effectively avoided, and the practicability is strong.
Description
Technical Field
The present invention relates to a flow sensing device for monitoring the dynamic changes of substances such as water flow, gas and the like.
Background
The flow sensing device is widely used in petroleum, gasification plants, water plants or some engineering projects, for example, in some polishing devices, the water circulation is inevitably used, and the water circulation needs to be monitored by the flow sensing device in real time to prevent the water from being too little and further to effectively digest impurities such as dust and the like in the polishing process, while in the polishing equipment in the prior art, whether water needs to be added or impurities need to be cleaned is judged by identifying the water quantity in a water tank by human eyes, although some flow sensing devices exist in the current society, the structure is not consistent in principle, in the prior art, the most common flow sensing device is a structure which adopts a magnetic body arranged in a hollow space, and the structure continuously absorbs metal ions in water due to the magnetic factor in the structure in long-term use, in the past, the magnetic body and the plastic cover wrapped outside the magnetic body are easy to block, and similarly, the material impurities generated in the operation process of the polishing equipment also easily block the flow sensing device, so that the accuracy of flow monitoring is influenced.
Disclosure of Invention
The utility model aims to provide a flow sensing device which is simple in structure and long in service life.
To achieve the above object, the present invention provides a flow sensing device, comprising a hollow tube: the device is mainly used for fluid to flow in the inner cavity of the device;
lining: the sleeve is arranged at two axial ends of the hollow tube, specifically, the sleeve is sleeved on the outer peripheral wall of the hollow tube in an interference fit or over-fit mode, obviously, substances such as solid glue and the like can be used for filling a gap between the sleeve and the tube wall of the hollow tube, and the structural fit of water penetration resistance is realized;
sheathing: the sealing device is movably connected to the bushing, specifically, an external thread is formed on the outer surface of the bushing, the sheath is provided with an internal thread in threaded connection with the bushing, and an annular sealing groove for mounting a sealing ring is formed in the top end surface of the bushing;
non-magnetic metal float: it is installed in the hollow pipe and can move along the axial direction of the hollow pipe under the impact of water flow;
a proximity switch: the non-magnetic metal floater moving device is arranged on the pipe wall of the hollow pipe and used for sensing signals and sending signals when the non-magnetic metal floater moves to a position corresponding to the proximity switch in the radial direction.
As a further improvement of the utility model, the non-magnetic metal floater is provided with an annular wall matched with the inner peripheral wall of the hollow pipe, the upper end position of the annular wall is provided with a base plate, the base plate is provided with a flow reference hole, because the flow reference hole is in a hole-shaped structure with a larger diameter, when polishing equipment runs, generated material impurities fall into circulating water and are not enough to block the reference hole, the detection reliability of the flow sensing device can be effectively ensured, meanwhile, the non-magnetic metal floater structure adopts the flow reference hole structure, when the flow impact of water flow passing through the flow reference hole is relieved, the non-magnetic metal floater moves downwards, and then induction is generated at the position close to a switch and signals are transmitted out, in addition, the flow sensing device of the utility model has a very obvious characteristic that the flow sensing device can meet the actual flow size requirement of a client, the diameter of the required flow reference hole is calculated comprehensively according to the flow speed, flow impact force and other parameters of the relevant fluid provided by a customer, so that the required flow reference hole can meet more customized requirements when applied to specific equipment.
As a further improvement of the utility model, the axial two ends of the inner cavity of the hollow pipe are provided with limit grids for preventing the non-magnetic metal floater from falling off.
Through the improvement of the technical scheme on the prior art, the flow sensing device is simple in structure and low in cost, and due to the fact that the non-magnetic metal floater is used as a flow measuring standard substance, the non-magnetic metal floater does not generate an adsorption effect with material impurities or metal ions such as iron in water, the fact that the non-magnetic metal floater does not interfere with the induction of the proximity switch is effectively guaranteed, the accuracy of flow detection is higher, and the service life is longer.
Drawings
FIG. 1 is a schematic front view of a flow sensing device according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 4 is a schematic cross-sectional view of a bushing according to the present invention;
FIG. 5 is a schematic cross-sectional view of the sheath of the present invention;
fig. 6 is a schematic sectional view of a non-magnetic metal float according to the present invention.
Detailed Description
Fig. 1-6 show that the present embodiment employs a flow sensing device, fig. 1 in combination with fig. 2 and 3, which comprises a hollow tube 1: the device is mainly used for fluid to flow in the inner cavity of the device;
and (3) lining 2: the waterproof bushing is arranged at two axial ends of the hollow tube 1, specifically, the bushing 2 is sleeved on the outer peripheral wall of the hollow tube 1 in an interference fit or over fit mode, obviously, substances such as solid glue can be used for filling a gap between the bushing 2 and the tube wall of the hollow tube 1, and the structural fit of waterproof penetration is realized;
sheath 3: the outer surface of the bush 2 is formed with an external thread 20, as shown in fig. 4, and as further shown in fig. 5, the sheath 3 has an internal thread 30 in threaded connection with the bush 2, and the top end surface of the bush 2 is provided with an annular sealing groove 21 for mounting a sealing ring;
non-magnetic metal float 4: which is arranged in the hollow pipe 1 and can move along the axial direction of the hollow pipe 1 under the impact of water flow;
the proximity switch 5: the magnetic sensor is arranged on the pipe wall of the hollow pipe 1 and used for sensing, collecting and sending signals when the non-magnetic metal floater 4 moves to a position corresponding to the proximity switch 5 in the radial direction.
In this embodiment, as is apparent from fig. 3 in conjunction with fig. 6, the non-magnetic metal float 4 has an annular wall 40 matching with the inner peripheral wall of the hollow tube 1, a base plate 41 is formed at the upper end of the annular wall 40, and a flow reference hole 410 is formed in the base plate 41, in this embodiment, since the flow reference hole 410 has a hole-type structure with a large diameter, when the polishing apparatus is in operation, the generated material impurities fall into the circulating water, and are not enough to block the reference hole, the detection reliability of the flow sensing device can be effectively ensured, meanwhile, the structure of the non-magnetic metal float 4 of this embodiment adopts the structure of the flow reference hole 410, when the flow impact of the water flow passing through the flow reference hole 410 is relieved, the non-magnetic metal float 4 moves downward, and further generates induction and transmits a signal at a position close to the switch 5, and in addition, the flow sensing device of the present embodiment has a very obvious feature that the size of the flow reference hole 410 can be customized according to the actual flow requirement of the customer, that is, the diameter of the flow reference hole 410 can be calculated comprehensively according to the flow speed, flow impact force and other parameters of the relevant fluid provided by the customer, so that the flow sensing device can be applied to specific equipment to meet more customized requirements.
In this embodiment, the hollow tube 1 is provided at both axial ends with limiting grids 10 for preventing the non-magnetic metal float 4 from falling off.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are only illustrative of the principles of the present invention, but also various changes and modifications of the present invention, which are within the spirit of the technical solution of the present invention and fall within the scope of the claims of the present invention. The scope of the utility model is defined by the appended claims, the description, the drawings, and their equivalents.
Claims (5)
1. A flow sensing device, characterized by: comprises that
Hollow tube: for fluid to flow in its lumen;
lining: which are arranged at the two axial ends of the hollow pipe;
sheathing: which is movably connected to the bushing;
non-magnetic metal float: it is installed in the hollow pipe and can move along the axial direction of the hollow pipe under the impact of water flow;
a proximity switch: the non-magnetic metal floater moving device is arranged on the pipe wall of the hollow pipe and used for sensing signals and sending signals when the non-magnetic metal floater moves to a position corresponding to the proximity switch in the radial direction.
2. A flow sensing device according to claim 1, wherein: the non-magnetic metal floater is provided with an annular wall matched with the inner peripheral wall of the hollow pipe, a substrate is formed at the upper end of the annular wall, and a flow reference hole is formed in the substrate.
3. A flow sensing device according to claim 2, wherein: and the axial two ends of the inner cavity of the hollow pipe are provided with limiting grids for preventing the non-magnetic metal floater from falling off.
4. A flow sensing device according to claim 1, 2 or 3, wherein: an external thread is formed on the outer surface of the bushing, the sheath is provided with an internal thread which is in threaded connection with the bushing, and an annular sealing groove used for installing a sealing ring is formed in the top end face of the bushing.
5. A flow sensing device according to claim 4, wherein: the bush is sleeved on the peripheral wall of the hollow pipe in an interference fit mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122748707.9U CN216385817U (en) | 2021-11-10 | 2021-11-10 | Flow sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122748707.9U CN216385817U (en) | 2021-11-10 | 2021-11-10 | Flow sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216385817U true CN216385817U (en) | 2022-04-26 |
Family
ID=81252328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122748707.9U Active CN216385817U (en) | 2021-11-10 | 2021-11-10 | Flow sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216385817U (en) |
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2021
- 2021-11-10 CN CN202122748707.9U patent/CN216385817U/en active Active
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