CN210221202U

CN210221202U - Liquid level sensor

Info

Publication number: CN210221202U
Application number: CN201921134298.XU
Authority: CN
Inventors: Binjun Xie; 谢斌军; Changwei Lu; 卢昌伟
Original assignee: Ningbo Ming Rui Zhongxing Electronic Technology Co Ltd
Current assignee: Ningbo Ming Rui Zhongxing Electronic Technology Co Ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-03-31
Anticipated expiration: 2029-07-18

Abstract

The utility model relates to a level sensor relates to the technical field of sensor, has solved spacing cap and has sealed with gluing, riveting or weld in the other end of stainless steel, hardly dismantles, in case the float takes place to damage, hardly changes the float, and needs whole the change, leads to the higher problem of level sensor's use cost, and it includes: the pipe body, be equipped with the tongue tube and install in the PCB board of pipe body, an organic whole locate the joint of pipe body one end and the float of cover on locating the pipe body, still include at least two an organic whole locate the pipe body other end and along circumference evenly distributed's pothook and the cover locate on the pothook and with the spacing dish of pothook joint. The utility model discloses have spacing dish and can dismantle the lower extreme of connecting in the body, the float is convenient when the float takes place to damage and is changed the float, has reduced level sensor's use cost's effect.

Description

Liquid level sensor

Technical Field

The utility model belongs to the technical field of the technique of sensor and specifically relates to a level sensor is related to.

Background

A liquid level sensor (static pressure liquid level meter/liquid level transmitter/liquid level sensor/water level sensor) is a pressure sensor for measuring liquid level, is generally used for measuring the height of liquid level in a container at present, and is applied to places such as vehicles, ships, gas stations and the like.

The existing liquid level sensor usually installs a PCB board provided with a reed pipe in a stainless steel pipe, a floater sleeve is arranged on the outer side of the stainless steel pipe, an external thread connector is integrally arranged at one end of the stainless steel pipe, and the other end of the stainless steel pipe is sealed by glue, riveted or welded with a limit cap.

The above prior art solutions have the following drawbacks: the limiting cap is sealed, riveted or welded at the other end of the stainless steel by glue and is difficult to disassemble, once the floater is damaged, the floater is difficult to replace and needs to be integrally replaced, so that the use cost of the liquid level sensor is higher, and an improved space is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a level sensor, spacing dish can be dismantled and connect in the lower extreme of body, and the float is convenient to be changed the float when the float takes place to damage, has reduced level sensor's use cost.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a liquid level sensor comprises a pipe body, a PCB board which is provided with a reed pipe and is arranged in the pipe body, a joint which is integrally arranged at one end of the pipe body, and a floater which is sleeved on the pipe body, and further comprises at least two clamping hooks which are integrally arranged at the other end of the pipe body and are uniformly distributed along the circumferential direction, and a limiting disc which is sleeved on the clamping hooks and clamped with the clamping hooks.

Through adopting above-mentioned technical scheme, spacing dish can dismantle through the joint with the pothook and be connected in the lower extreme of body, and the float is convenient when taking place to damage carries out the dismouting change to the float, has reduced level sensor's use cost.

The utility model discloses further set up to: the tube body is made of plastic.

Through adopting above-mentioned technical scheme, compare in stainless steel, plastics make to connect and the body can direct integrative injection moulding, have improved the production efficiency who connects with the body.

The utility model discloses further set up to: still including installing in the body and supplying the protection tube that the PCB board wore to establish the installation.

Through adopting above-mentioned technical scheme, the setting of protection tube makes the PCB board can peg graft and install in the protection tube, has reduced PCB board and tongue tube and external contact, makes PCB board and tongue tube be difficult for being corroded, has improved the life of PCB board and tongue tube, has improved level sensor's life.

The utility model discloses further set up to: the protection tube is close to the one end of spacing dish and is pegged graft there is the lower extreme cover, the one end that the spacing dish was kept away from to the protection tube is pegged graft and is had the upper end cover that supplies the PCB board to peg graft, the upper end cover is worn out to the one end that the spacing dish was kept away from to the PCB board.

By adopting the technical scheme, the upper end cover and the lower end cover are respectively inserted at two ends of the protection tube, and the two ends of the protection tube are sealed and covered, so that the contact between the PCB and the reed switch in the protection tube and the outside is reduced, the PCB and the reed switch in the protection tube are not easy to corrode, the service lives of the PCB and the reed switch in the protection tube are prolonged, and the service life of the liquid level sensor is prolonged; meanwhile, the PCB is inserted into the upper end cover, so that the PCB is not easy to shake in the protective tube when in use, and the stability of the PCB in use is improved.

The utility model discloses further set up to: one end of the upper end cover, which is far away from the lower end cover, is integrally provided with a plug-in disc which is plugged in the tube body.

Through adopting above-mentioned technical scheme, the plug board is pegged graft in the body, provides the support for the protection tube to make the protection tube difficult emergence when using rock, improved the stability when the protection tube uses, improved level sensor level measurement's accuracy.

The utility model discloses further set up to: still an organic whole is provided with a plurality of strengthening ribs that are an organic whole and set up and evenly set up along circumference with connecting on the body is close to the periphery wall that connects.

Through adopting above-mentioned technical scheme, the setting of strengthening rib has increased the joint strength between joint and the body under the condition of the thickness that does not increase the pipe wall, has increased the mobility when joint and body are moulded plastics simultaneously, has improved the quality when joint and body are moulded plastics.

The utility model discloses further set up to: the joint comprises a threaded portion and a hexagonal head, and a sealing ring is sleeved on one side, close to the hexagonal head, of the threaded portion.

Through adopting above-mentioned technical scheme, the setting of sealing washer seals the junction of level sensor and water tank, makes the difficult emergence of water tank reveal, has improved the leakproofness of level sensor and water tank junction.

The utility model discloses further set up to: a cap is covered at one end of the joint, which is far away from the pipe body, and the cap is sleeved on the lead;

the nut cap is further integrally provided with a butting ring which is sleeved on the lead and is abutted against the lead.

By adopting the technical scheme, the cap is covered at the upper end of the joint, the space in the joint and the pipe body is sealed, the contact between the joint and the inside of the pipe body and the outside is reduced, the PCB and the reed pipe are not easy to corrode, and the service life of the liquid level sensor is prolonged; the setting of butt joint ring seals the gap between block and the wire, has improved the sealed effect when the block lid is fashionable.

The utility model discloses further set up to: one end of the joint, which is far away from the pipe body, is integrally provided with an inserting cylinder inserted with the cap.

Through adopting above-mentioned technical scheme, a grafting section of thick bamboo is pegged graft on the block, makes block and articulate more firmly, has improved the stability when the block uses.

The utility model discloses further set up to: one end of the inserting cylinder, which is far away from the joint, is integrally provided with a clamping ring, and the inner peripheral wall of the cap is integrally provided with a clamping ring clamped with the clamping ring.

Through adopting above-mentioned technical scheme, the block passes through the joint of joint ring and snap ring, further fixes with connecting, makes the block difficult and connect the separation, has improved the stability when the block uses, has improved the lid of block and has closed sealed effect.

To sum up, the utility model discloses a beneficial technological effect does:

1. the limiting disc is detachably connected to the lower end of the tube body, the floater is convenient to replace after being damaged, and the use cost of the liquid level sensor is reduced;

2, the PCB can be inserted and installed in the protective tube, so that the PCB and the reed switch are not easy to corrode, the service lives of the PCB and the reed switch are prolonged, and the service life of the liquid level sensor is prolonged;

3. the upper end that connects is located to the block lid, seals the space in joint and the body, makes PCB board and tongue tube be difficult for corroding, has improved level sensor's life.

Drawings

Fig. 1 is a schematic structural diagram of a liquid level sensor according to the present invention.

Fig. 2 is a schematic diagram of a partial explosion of the tube, the float and the limiting disc.

Fig. 3 is a half sectional view of the tube, the gasket, and the cap.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic diagram of a PCB board, an upper cover, a protection tube, and a lower cover in a partially exploded manner.

Fig. 6 is a schematic diagram of a partial explosion of the PCB, the upper cover, the protection tube, and the lower cover.

In the figure, 1, a tube body; 2. a reed switch; 3. a PCB board; 4. a joint; 5. a float; 6. a hook; 7. a limiting disc; 8. protecting the tube; 9. a lower end cover; 10. an upper end cover; 11. a plug-in tray; 12. reinforcing ribs; 13. a threaded portion; 14. a hexagonal head; 15. a seal ring; 16. capping; 17. a plug-in barrel; 18. a snap ring; 19. a snap ring; 20. a butting ring; 21. and (4) conducting wires.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1 to 6.

Referring to fig. 1, for the utility model discloses a liquid level sensor, including body 1, joint 4, float 5, block 16 and spacing dish 7.

Referring to fig. 1 and 2, float 5 is located on body 1, and the quantity of pothook 6 is two at least, and the integrative lower extreme of locating body 1 of pothook 6 just along circumference evenly distributed, and the pothook 6 is located to spacing dish 7 cover and just with pothook 6 joint, and the external diameter of spacing dish 7 is greater than the hole of float 5 to it is spacing to carry out float 5, makes float 5 be difficult for breaking away from body 1.

Referring to fig. 1 and 3, the PCB 3, the protection tube 8 and the cap 16 are also included; connect 4 an organic whole to locate the upper end of body 1, the lower extreme of body 1 seals the upper end opening, and body 1 is gone up still an organic whole and is equipped with a plurality of strengthening ribs 12, and strengthening rib 12 is located body 1 and is close to one side that connects 4 and be connected with joint 4, and strengthening rib 12 is along the circumference evenly distributed of body 1, and strengthening rib 12 is used for strengthening the structural strength of body 1 and joint 4 junction.

The joint 4 includes a threaded portion 13 and a hexagonal head 14; the threaded portion 13 is integrally connected with the pipe body 1, the threaded portion 13 is convenient to be fixed with the water tank in a threaded mode, the hexagonal head 14 is integrally arranged on one side, away from the pipe body 1, of the threaded portion 13, and the hexagonal head 14 is sleeved with a wrench to install the liquid level sensor on the water tank in a threaded mode; one side of the threaded part 13 close to the hexagonal head 14 is also sleeved with a sealing ring 15 to seal the joint of the liquid level sensor and the water tank.

Referring to fig. 3 and 4, the cap 16 covers the upper end of the joint 4 to cover and seal the space between the joint 4 and the pipe body 1, the upper end of the PCB 3 is connected with a lead 21, and the cap 16 is sleeved on the lead 21; the cap 16 is further integrally provided with a contact ring 20, and the contact ring 20 is sleeved on the lead 21 and contacts with the lead 21 to seal a gap between the cap 16 and the lead 21.

The upper end of the joint 4 is integrally provided with an inserting cylinder, and an inserting cylinder 17 is inserted into the cap 16 so as to ensure that the cap 16 is connected with the joint 4 more firmly; still integrative being equipped with joint ring 18 on the periphery wall of a section of thick bamboo 17 far away from joint 4 inserts, an organic whole is equipped with snap ring 19 on the internal perisporium of block 16, snap ring 19 and the joint of joint ring 18 to make block 16 be connected more firmly with joint 4, and difficult and joint 4 separation.

Referring to fig. 5 and 6, the reed switch 2 is welded on the lower side of the PCB 3, the PCB 3 is installed on the protection tube 8 in a penetrating manner, the upper end of the protection tube 8 is provided with an upper end cover 10, the upper end cover 10 is inserted into the upper end of the protection tube 8, the PCB 3 is inserted into the upper end cover 10, and the upper end of the PCB 3 extends out of the upper end cover 10; the lower extreme of protection tube 8 is equipped with lower end cover 9, and lower end cover 9 pegs graft in the lower extreme of protection tube 8, and the lower extreme of PCB board 3 pegs graft on lower end cover 9 and do not pierce through lower end cover 9.

With reference to fig. 3, the upper end of the upper end cap 10 is integrally provided with a plug board 11, and the plug board 11 is inserted into the tube body 1 to support the protection tube 8, so that the protection tube 8 and the PCB 3 are not prone to shaking when in use.

The implementation principle of the embodiment is as follows:

the limiting disc 7 is detachably connected to the lower end of the pipe body 1 through clamping with the clamping hook 6 to limit the floater 5, and when the floater 5 is damaged, the limiting disc 7 can be directly detached to replace the floater 5; the PCB 3 is arranged on the protection tube 8 in a penetrating way, the upper end cover 10 and the lower end cover 9 are respectively inserted into two ends of the protection tube 8 to cover and seal the protection tube 8, so that the PCB and the reed switch 2 are not easy to contact with the outside, and the PCB and the reed switch 2 are not easy to corrode.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a liquid level sensor, includes body (1), be equipped with tongue tube (2) and install PCB board (3) in body (1), integrative joint (4) of locating body (1) one end and float (5) on body (1) are located to the cover, its characterized in that: the pipe body is characterized by further comprising at least two integrated clamping hooks (6) which are arranged at the other end of the pipe body (1) and are uniformly distributed along the circumferential direction and a limiting disc (7) which is sleeved on the clamping hooks (6) and is clamped with the clamping hooks (6).

2. A liquid level sensor as claimed in claim 1, wherein: the tube body (1) is made of plastic.

3. A liquid level sensor as claimed in claim 1, wherein: the PCB protection device is characterized by further comprising a protection tube (8) which is arranged in the tube body (1) and is used for the PCB (3) to be installed in a penetrating mode.

4. A liquid level sensor according to claim 3, wherein: one end of the protection tube (8) close to the limiting disc (7) is spliced with a lower end cover (9), one end of the protection tube (8) far away from the limiting disc (7) is spliced with an upper end cover (10) for the PCB (3) to be spliced, and one end of the PCB (3) far away from the limiting disc (7) penetrates out of the upper end cover (10).

5. A liquid level sensor according to claim 4, wherein: one end of the upper end cover (10) far away from the lower end cover (9) is integrally provided with a plug-in disc (11) which is plugged in the pipe body (1).

6. A liquid level sensor as claimed in claim 1, wherein: the pipe body (1) is close to the peripheral wall of the joint (4) and is further integrally provided with a plurality of reinforcing ribs (12) which are integrally arranged with the joint (4) and are uniformly arranged along the circumferential direction.

7. A liquid level sensor as claimed in claim 1, wherein: the joint (4) comprises a threaded portion (13) and a hexagonal head portion (14), and a sealing ring (15) is sleeved on one side, close to the hexagonal head portion (14), of the threaded portion (13).

8. A liquid level sensor as claimed in claim 1, wherein: a cap (16) is further covered at one end of the joint (4) far away from the pipe body (1), and the cap (16) is sleeved on the guide line;

the cap (16) is also integrally provided with an abutting ring (20) which is sleeved on the lead and is abutted against the lead.

9. A liquid level sensor according to claim 8, wherein: one end of the joint (4) far away from the pipe body (1) is integrally provided with an insertion cylinder (17) inserted with the cap (16).

10. A liquid level sensor according to claim 9, wherein: one end of the inserting cylinder (17) far away from the joint (4) is integrally provided with a clamping ring (18), and the inner peripheral wall of the cover cap (16) is integrally provided with a clamping ring (19) clamped with the clamping ring (18).