阅读说明：本技术 一种液位控制开关 (Liquid level control switch ) 是由 徐乃东 徐晨光 于 2020-06-05 设计创作，主要内容包括：一种液位控制开关。涉及液位控制领域,尤其涉及一种液位控制开关。提供了一种结构简单,方便安装,动作可靠的液位控制开关。本发明在工作中,将浮球组件放置在位置开关的下方,其中,在浮球组件的护筒内设置浮子一~三,便于根据不同位置,从而触发相应的开关动作,便于水位控制；在浮子一~三的上、下方分别设置限位块,这样,浮子一限定了上极限范围,浮子二限定了工作范围,浮子三限定了下极限范围,方便可靠；护筒可根据工作需要设置在水箱内部或外部,水箱内的液体通过进水口进入护筒,从而带动浮子一~三动作,再通过与浮子一~三对应连接的导杆一~三动作,导杆一~三再与相应的推杆动作,这样,驱动组件可作用于相应的开关,方便可靠。(A liquid level control switch. Relate to the liquid level control field, especially relate to a liquid level control switch. The liquid level control switch is simple in structure, convenient to install and reliable in action. In the working process, the floating ball assembly is placed below the position switch, wherein one to three floaters are arranged in the protective cylinder of the floating ball assembly, so that corresponding switch actions can be triggered conveniently according to different positions, and the water level is controlled conveniently; the upper and lower parts of the first to third floats are respectively provided with a limiting block, so that the first float defines an upper limit range, the second float defines a working range, and the third float defines a lower limit range, and the device is convenient and reliable; the protective cylinder can be arranged inside or outside the water tank according to working requirements, liquid in the water tank enters the protective cylinder through the water inlet, so that the first-third actions of the floats are driven, the first-third actions of the guide rods correspondingly connected with the first-third actions of the floats are driven, and the first-third actions of the guide rods act with corresponding push rods, so that the driving assembly can act on corresponding switches, and the water tank is convenient and reliable.)

1. A liquid level control switch is characterized by comprising a position switch and a floating ball component, wherein the position switch comprises a switch box, three switches and three driving components, the three switches are arranged in the switch box, and the driving components correspond to the switches one by one and are used for driving the switches to act;

the floating ball component comprises a protective cylinder, a connecting frame, a guide rod I, a guide rod II, a guide rod III, a floater I, a floater II and a floater III, wherein the connecting frame, the guide rod I, the guide rod II, the guide rod III, the floater I, the floater II and the floater III are arranged in the protective cylinder, the protective cylinder is arranged at the bottom of the switch box, the connecting frame is positioned at the top of the protective cylinder, three through holes which are parallel to each other are arranged on the connecting frame, push rods of the driving components are,

the first guide rod and the second guide rod are hollow rods respectively, the third guide rod is positioned in the middle hole of the second guide rod, the second guide rod is positioned in the middle hole of the first guide rod,

the top end of the guide rod III extends out of the guide rod II, the top end of the guide rod II extends out of the guide rod I,

the bottom end of the guide rod III extends out of the guide rod II, the bottom end of the guide rod II extends out of the guide rod I,

the first floater, the second floater and the third floater are sequentially arranged from top to bottom,

the top end of the guide rod I is connected with a connecting plate I, the bottom end of the guide rod I is connected with a floater I, one end of the connecting plate I is connected with the protective cylinder through a rotating pin, the other end of the connecting plate I is connected with a push rod in a first through hole of the three through holes through a screw rod,

the top end of the guide rod II is connected with a connecting plate II, the bottom end of the connecting plate II is connected with a floater II, one end of the connecting plate II is connected with the protective cylinder through a rotating pin, the other end of the connecting plate II is connected with a push rod in a third through hole in the three through holes through a screw rod II,

the top end of the guide rod III is connected with a push rod in a second through hole in the three through holes, and the bottom end of the guide rod III is connected with a floater III;

limiting blocks are respectively arranged above and below the first floater, the second floater and the third floater in the protective cylinder;

the bottom of the protective cylinder is provided with a water inlet.

2. The level control switch according to claim 1, wherein said drive assembly includes a housing, a fork and a roller carriage disposed within a switch housing, said housing being fixedly disposed within the switch housing,

the box base is rectangular, a concave cavity is arranged in the box base, the concave cavity is trapezoidal with a large left side and a small right side, a through hole penetrating through the box base and the switch box is formed in the bottom of the left side of the concave cavity, a first pin hole is formed in the middle of the right side of the concave cavity,

the left end of the box base, facing the switch, is provided with a triangular convex part, and the convex part is provided with a second pin hole;

the shifting fork is positioned in the concave cavity of the box seat, the shifting fork comprises a shifting fork body, a spring fixing seat, a compression spring and a spring sliding seat, the shifting fork body comprises a frame body, a pair of parallel mounting lugs is arranged on the outer side of one end of the frame body, a first sliding hole and a second sliding hole are sequentially arranged on two sides of the other end of the frame body,

the spring fixing seat, the compression spring and the spring sliding seat are sequentially arranged in the frame body, the spring fixing seat is fixedly arranged at one end of the frame body facing the mounting lug,

the spring sliding seat is connected between the pair of sliding holes I in a sliding mode through a positioning pin, and the positioning pin extends into the pin holes I;

the roller carrier comprises a pair of parallel triangular supporting plates, two supporting rods are arranged between the pair of supporting plates and are positioned at two corner ends of the supporting plates, the supporting rods are connected with rollers which are used for contacting a switch,

a pair of supporting plates are respectively provided with a corresponding master pin hole and a corresponding slave pin hole, the centers of the master pin hole and the slave pin hole are positioned on the same straight line, the master pin hole is positioned between the pair of rollers, the slave pin hole is positioned at the third corner end of the supporting plate,

the box seat is positioned between the pair of supporting plates, the main pin hole corresponds to the second pin hole and is used for placing a main pin shaft, and the auxiliary pin hole corresponds to the second sliding hole and is used for placing an auxiliary pin shaft;

the push rod extends into the through holes of the switch box and the box base and is connected between the pair of mounting lugs.

3. The liquid level control switch according to claim 2, wherein the box base comprises two box base bodies which are symmetrical and connected by a screw.

4. The level control switch according to claim 2, wherein said switch box comprises a front housing and a rear housing, said front housing and said rear housing being in communication, said switch being disposed in said rear housing, said front housing having wiring holes therein.

5. The level control switch according to claim 4, wherein a pair of symmetrically disposed U-shaped brackets are disposed within said rear housing, said switch being disposed between said pair of U-shaped brackets.

6. The liquid level control switch according to claim 4 or 5, further comprising a pair of fixing frames symmetrically disposed on the rear housing, wherein the cartridge holder is located between the pair of fixing frames.

7. The liquid level control switch according to any one of claims 2-5, wherein a pair of mounting lugs are respectively provided with a connecting hole, a pin shaft is arranged in the connecting holes of the pair of mounting lugs, and the push rod is provided with a circular ring which is sleeved on the pin shaft.

8. The liquid level control switch according to claim 1, wherein a positioning plate is arranged in the protective cylinder, the positioning plate is positioned between the first floater and the first connecting plate, a positioning hole is formed in the positioning plate, and the guide rod is positioned in the positioning hole.

9. The level control switch according to claim 1, wherein said float-one is provided with a first through-hole, and said guide-rod-one is connected in said first through-hole;

the second floater is provided with a second through hole, and the second guide rod is connected in the second through hole;

the floater III is provided with a third through hole, and the guide rod III is connected in the third through hole.

Technical Field

The invention relates to the field of liquid level control, in particular to a liquid level control switch.

Background

The float switch is a liquid level controller with simple structure and convenient use, and has the advantages of smaller volume, longer service life and the like compared with a common mechanical switch.

Disclosure of Invention

Aiming at the problems, the invention provides the liquid level control switch which is simple in structure, convenient to install and reliable in action.

The technical scheme of the invention is as follows: the device comprises a position switch and a floating ball component, wherein the position switch comprises a switch box, three switches and three driving components, the three switches are arranged in the switch box, and the driving components correspond to the switches one by one and are used for driving the switches to act;

the floating ball component comprises a protective cylinder, a connecting frame, a guide rod I, a guide rod II, a guide rod III, a floater I, a floater II and a floater III, wherein the connecting frame, the guide rod I, the guide rod II, the guide rod III, the floater I, the floater II and the floater III are arranged in the protective cylinder, the protective cylinder is arranged at the bottom of the switch box, the connecting frame is positioned at the top of the protective cylinder, three through holes which are parallel to each other are arranged on the connecting frame, push rods of the driving components are,

the first guide rod and the second guide rod are hollow rods respectively, the third guide rod is positioned in the middle hole of the second guide rod, the second guide rod is positioned in the middle hole of the first guide rod,

the top end of the guide rod III extends out of the guide rod II, the top end of the guide rod II extends out of the guide rod I,

the bottom end of the guide rod III extends out of the guide rod II, the bottom end of the guide rod II extends out of the guide rod I,

the first floater, the second floater and the third floater are sequentially arranged from top to bottom,

the top end of the guide rod I is connected with a connecting plate I, the bottom end of the guide rod I is connected with a floater I, one end of the connecting plate I is connected with the protective cylinder through a rotating pin, the other end of the connecting plate I is connected with a push rod in a first through hole of the three through holes through a screw rod,

the top end of the guide rod II is connected with a connecting plate II, the bottom end of the connecting plate II is connected with a floater II, one end of the connecting plate II is connected with the protective cylinder through a rotating pin, the other end of the connecting plate II is connected with a push rod in a third through hole in the three through holes through a screw rod II,

the top end of the guide rod III is connected with a push rod in a second through hole in the three through holes, and the bottom end of the guide rod III is connected with a floater III;

limiting blocks are respectively arranged above and below the first floater, the second floater and the third floater in the protective cylinder;

the bottom of the protective cylinder is provided with a water inlet.

The driving component comprises a box seat, a shifting fork and a roller carrier which are arranged in the switch box, the box seat is fixedly arranged in the switch box,

the box base is rectangular, a concave cavity is arranged in the box base, the concave cavity is trapezoidal with a large left side and a small right side, a through hole penetrating through the box base and the switch box is formed in the bottom of the left side of the concave cavity, a first pin hole is formed in the middle of the right side of the concave cavity,

the left end of the box base, facing the switch, is provided with a triangular convex part, and the convex part is provided with a second pin hole;

the shifting fork is positioned in the concave cavity of the box seat, the shifting fork comprises a shifting fork body, a spring fixing seat, a compression spring and a spring sliding seat, the shifting fork body comprises a frame body, a pair of parallel mounting lugs is arranged on the outer side of one end of the frame body, a first sliding hole and a second sliding hole are sequentially arranged on two sides of the other end of the frame body,

the spring fixing seat, the compression spring and the spring sliding seat are sequentially arranged in the frame body, the spring fixing seat is fixedly arranged at one end of the frame body facing the mounting lug,

the spring sliding seat is connected between the pair of sliding holes I in a sliding mode through a positioning pin, and the positioning pin extends into the pin holes I;

the roller carrier comprises a pair of parallel triangular supporting plates, two supporting rods are arranged between the pair of supporting plates and are positioned at two corner ends of the supporting plates, the supporting rods are connected with rollers which are used for contacting a switch,

a pair of supporting plates are respectively provided with a corresponding master pin hole and a corresponding slave pin hole, the centers of the master pin hole and the slave pin hole are positioned on the same straight line, the master pin hole is positioned between the pair of rollers, the slave pin hole is positioned at the third corner end of the supporting plate,

the box seat is positioned between the pair of supporting plates, the main pin hole corresponds to the second pin hole and is used for placing a main pin shaft, and the auxiliary pin hole corresponds to the second sliding hole and is used for placing an auxiliary pin shaft;

the push rod extends into the through holes of the switch box and the box base and is connected between the pair of mounting lugs.

The box base comprises two symmetrical box base bodies which are connected through screws.

The switch box comprises a front shell and a rear shell, wherein the front shell is communicated with the rear shell, the switch is arranged in the rear shell, and a wiring hole is formed in the front shell.

A pair of symmetrically arranged U-shaped frames is arranged in the rear shell, and the switch is located between the pair of U-shaped frames.

The box seat is arranged between the pair of fixing frames.

The pair of mounting lugs are respectively provided with a connecting hole, a pin shaft is arranged in the connecting holes of the pair of mounting lugs, the push rod is provided with a circular ring, and the circular ring is sleeved on the pin shaft.

And a positioning plate is arranged in the protective cylinder and is positioned between the first floater and the first connecting plate, a positioning hole is formed in the positioning plate, and the first guide rod is positioned in the positioning hole.

The first floater is provided with a first through hole, and the first guide rod is connected in the first through hole;

the second floater is provided with a second through hole, and the second guide rod is connected in the second through hole;

the floater III is provided with a third through hole, and the guide rod III is connected in the third through hole.

In the working process, the floating ball assembly is placed below the position switch, wherein one to three floaters are arranged in the protective cylinder of the floating ball assembly, so that corresponding switch actions are triggered conveniently according to different positions, and water level control is facilitated;

the upper and lower parts of the first to third floats are respectively provided with a limiting block, so that the first float defines an upper limit range, the second float defines a working range, and the third float defines a lower limit range, and the device is convenient and reliable;

the protective cylinder can be arranged inside or outside the water tank according to the working requirement, the liquid in the water tank enters the protective cylinder through the water inlet so as to drive the floater to move one to three times,

and then the guide rods which are correspondingly connected with the floaters I to III act one to three, and the guide rods I to III act with the corresponding push rods, so that the driving assembly can act on the corresponding switches, and the switch is convenient and reliable.

The guide rod III is arranged in the middle hole of the guide rod II, and the guide rod II is arranged in the middle hole of the guide rod I, so that the space is saved conveniently.

The invention has convenient processing and reliable operation.

Drawings

Figure 1 is a schematic view of the structure of the present invention,

figure 2 is a right side view of figure 1,

figure 3 is a schematic view of the structure of the position switch,

figure 4 is a cross-sectional view taken along plane a-a of figure 3,

figure 5 is a left side view of figure 4,

figure 6 is a schematic view of the action of the roller carriage and fork,

figure 7 is a schematic view of the structure of the cartridge holder,

figure 8 is a cross-sectional view taken along plane B-B of figure 7,

figure 9 is a schematic view of the construction of the fork,

figure 10 is a cross-sectional view taken along plane C-C of figure 9,

figure 11 is a schematic view of the construction of the roller frame,

figure 12 is a top view of figure 11,

FIG. 13 is a schematic view of the actuation of the drive assembly;

in the figure, 1 is a switch box, 11 is a front shell, 12 is a rear shell, 13 is a wiring hole, 14 is a U-shaped frame, 15 is a fixed frame,

2 is a switch, and the number 2 is,

3 is a driving component which is used for driving the motor,

31 is a push rod, 310 is a circular ring,

32 is a box seat, 320 is a concave cavity, 321 is a through hole, 322 is a pin hole I, 323 is a convex part, 324 is a pin hole II, 325 is a box seat body, 326 is a screw,

33 is a shifting fork, 331 is a shifting fork body, 332 is a spring fixing seat, 333 is a compression spring, 334 is a spring sliding seat, 335 is a mounting lug, 336 is a sliding hole I, 337 is a sliding hole II, 338 is a positioning pin, 339 is a pin shaft,

34 is a roller frame, 341 is a stay plate, 342 is a support rod, 343 is a roller, 344 is a master pin hole, 345 is a slave pin hole, 346 is a master pin shaft, 347 is a slave pin shaft,

4 is a protective cylinder, 40 is a water inlet,

51 is a connecting frame, 510 is a through hole, 52 is a first guide rod, 53 is a second guide rod, 54 is a third guide rod, 55 is a first floater, 56 is a second floater, 57 is a third floater, 58 is a limiting block,

61 is a connecting plate I, 62 is a screw rod I, 63 is a rotating pin,

71 is a connecting plate II, 72 is a screw rod II,

8 is a positioning plate, and 80 is a positioning hole;

the arrow in FIG. 13 represents the float raising action.

Detailed Description

The invention is shown in figures 1-13, and comprises a position switch and a floating ball component, wherein the position switch comprises a switch box 1, three switches 2 and three driving components 3, the three switches (such as a triple switch) are arranged in the switch box, and the driving components correspond to the switches one by one and are used for driving the switches to act;

the floating ball component comprises a protective cylinder 4, and a connecting frame 51, a guide rod I52, a guide rod II 53, a guide rod III 54, a float I55, a float II 56 and a float III 57 which are arranged in the protective cylinder, wherein the protective cylinder is arranged at the bottom of the switch box, the connecting frame 51 is positioned at the top of the protective cylinder, three parallel through holes 510 are formed in the connecting frame, and push rods of the driving component are correspondingly arranged in the through holes one by one, so that the push rods can be conveniently and reliably lifted;

the first guide rod 52 and the second guide rod 53 are hollow rods respectively, the third guide rod 54 is positioned in the middle hole of the second guide rod, the second guide rod is positioned in the middle hole of the first guide rod,

the top end of the guide rod three 54 extends out of the guide rod two 53, the top end of the guide rod two 53 extends out of the guide rod one 52,

the bottom end of the third guide rod 54 extends out of the second guide rod 53, and the bottom end of the second guide rod 53 extends out of the first guide rod 52, so that the three parts are staggered, interference is avoided, and the action is reliable;

the first floater 55, the second floater 56 and the third floater 57 are arranged from top to bottom in sequence,

the top end of the first guide rod 52 is connected with a first connecting plate 61, the bottom end of the first guide rod is connected with a first floater 55, one end of the first connecting plate 61 is connected with the protective cylinder through a rotating pin 63, the other end of the first connecting plate is connected with a push rod in a first through hole in the three through holes through a first screw 62, and the first connecting plate is driven to rotate along the rotating pin when the first guide rod lifts, so that the push rod is driven to lift through the screw;

the top end of the second guide rod 53 is connected with a second connecting plate 71, the bottom end of the second connecting plate is connected with a second floater 56, one end of the second connecting plate is connected with the protective cylinder through a rotating pin, and the other end of the second connecting plate is connected with a push rod in a third through hole in the three through holes through a second screw 72, so that the second connecting plate is driven to rotate along the rotating pin when the second guide rod lifts, and the push rod is driven to lift through the second screw; the threaded holes can be formed in the push rod, so that the first screw rod and the second screw rod can be connected through threads conveniently, and the disassembly and the assembly are convenient;

the top end of the guide rod III 54 is connected with a push rod in a second through hole of the three through holes, and the bottom end of the guide rod III is connected with a floater III 57;

limiting blocks 58 are respectively arranged above and below the first floater, the second floater and the third floater in the protective cylinder;

the bottom of the casing is provided with a water inlet 40.

In the working process, the floating ball assembly is placed below the position switch, wherein one to three floaters are arranged in the protective cylinder of the floating ball assembly, so that corresponding switch actions are triggered conveniently according to different positions, and alarming and water level control are facilitated;

the upper and lower parts of the first to third floats are respectively provided with a limiting block, so that the first float defines an upper limit range, the second float defines a working range, and the third float defines a lower limit range, and the device is convenient and reliable;

the protective cylinder can be arranged inside or outside the water tank according to working requirements, liquid in the water tank enters the protective cylinder through the water inlet so as to drive the floats to move one to three times, and when the protective cylinder is arranged outside the water tank, the protective cylinder is connected and supported through the frame;

and then the guide rods which are correspondingly connected with the floaters I to III act one to three, and the guide rods I to III act with the corresponding push rods, so that the driving assembly can act on the corresponding switches, and the switch is convenient and reliable.

The guide rod III is arranged in the middle hole of the guide rod II, and the guide rod II is arranged in the middle hole of the guide rod I, so that the space is saved conveniently.

The driving component 3 comprises a box seat 32, a shifting fork 33 and a roller carrier 34 which are arranged in a switch box, the box seat is fixedly arranged in the switch box,

the box seat 32 is rectangular, a concave cavity 320 is arranged in the box seat, the concave cavity is trapezoidal with a large left side and a small right side, a through hole 321 penetrating through the box seat and the switch box is arranged at the bottom of the left side of the concave cavity, a first pin hole 322 is arranged in the middle of the right side,

the left end of the box base facing the switch is provided with a triangular convex part 323, and the convex part is provided with a second pin hole 324;

the shifting fork 33 is positioned in the cavity of the box seat, the shifting fork comprises a shifting fork body 331, a spring fixing seat 332, a compression spring 333 and a spring sliding seat 334, the shifting fork body comprises a frame body, a pair of parallel mounting lugs 335 are arranged on the outer side of one end of the frame body, a first sliding hole 336 and a second sliding hole 337 are sequentially arranged on two sides of the other end of the frame body,

the spring fixing seat, the compression spring and the spring sliding seat are sequentially arranged in the frame body, the spring fixing seat is fixedly arranged at one end of the frame body facing the mounting lug,

the spring sliding seat 334 is slidably connected between the pair of first sliding holes through a positioning pin 338, and the positioning pin 338 extends into the first pin hole 322;

the roller frame 34 comprises a pair of parallel triangular supporting plates 341, two supporting rods 342 are arranged between the pair of supporting plates and located at two corner ends of the supporting plates, a roller 343 is connected to the supporting rods and used for contacting a switch,

a pair of supporting plates are respectively provided with a corresponding master pin hole 344 and a corresponding slave pin hole 345, the centers of the master pin hole and the slave pin hole are positioned on the same straight line, the master pin hole is positioned between a pair of rollers, the slave pin hole is positioned at the third corner end of the supporting plate,

the box seat is positioned between a pair of supporting plates, the main pin hole corresponds to the second pin hole and is used for placing the main pin shaft 346, and the auxiliary pin hole corresponds to the second sliding hole and is used for placing the auxiliary pin shaft 347;

the push rod extends into the through holes of the switch box and the box base and is connected between the pair of mounting lugs.

In the work, place the push rod in the perforation of switch box and box seat, go up and down through float one ~ three and drive push rod and corresponding drive assembly, realize the reliable control to the switch, improve stability.

The driving assembly comprises a box seat, a shifting fork and a roller carrier, the box seat is fixedly arranged in the switch box, the shifting fork is arranged in the concave cavity by arranging the concave cavity on the box seat, the positioning pin on the shifting fork is positioned in the first pin hole, and the shifting fork can rotate around the positioning pin 338 by the action of the push rod because the push rod is connected between the pair of mounting lugs,

meanwhile, the box seat is positioned in the roller carrier, the box seat is connected with the roller carrier through a main pin shaft, the roller carrier is connected with the shifting fork through a slave pin shaft,

thus, when the fork is rotated, the slave pin shaft acts to drive the roller frame to rotate around the main pin shaft 346, and the roller on the roller frame moves along the switch until the switch stops.

The shifting fork is moved to the top and the bottom of the concave cavity through the push rod, so that the roller carrier is moved and respectively corresponds to the opening and closing actions of the switch;

when the shifting fork is arranged at the top and the bottom of the concave cavity, the compression spring is unfolded, and the compression spring is extruded in the rotating process.

The cassette holder includes two symmetric cassette holder bodies 325, which are connected by screws 326.

By adopting the combination form of the two box seat bodies, the processing (especially the action of processing a concave cavity) is convenient, and the disassembly and the assembly are reliable.

Switch box 1 includes procapsid 11 and back casing 12, the procapsid is linked together with the back casing, the switch is arranged in the back casing, be equipped with wiring hole 13 on the procapsid.

The processing is convenient, and the layout is reliable; in practical application, the switch performs wiring operation through the wiring hole.

A pair of symmetrically arranged U-shaped frames 14 is arranged in the rear shell, and the switch is positioned between the pair of U-shaped frames.

The switch is convenient, the positioning and the installation are convenient, and the connection is reliable.

The box seat is characterized by further comprising a pair of fixing frames 15, the pair of fixing frames are symmetrically arranged on the rear shell, and the box seat is located between the pair of fixing frames.

Therefore, the box base is convenient to reliably position and fix and is convenient to install.

The pair of mounting lugs 335 are respectively provided with a connecting hole, a pin shaft 339 is arranged in the connecting holes of the pair of mounting lugs, the push rod is provided with a circular ring 310, and the circular ring is sleeved on the pin shaft.

The round ring is arranged on the push rod and sleeved on the pin shaft, so that the push rod can reliably adapt to the movement of the shifting fork when being lifted and moved, and the action is reliable.

And a positioning plate 8 is arranged in the protective cylinder, the positioning plate is positioned between the first floater and the first connecting plate, a positioning hole 80 is formed in the positioning plate, and the first guide rod is positioned in the positioning hole.

Therefore, the guide rod can be reliably positioned and lifted reliably.

The first floater is provided with a first through hole, and the first guide rod is connected in the first through hole;

the second floater is provided with a second through hole, and the second guide rod is connected in the second through hole;

the floater III is provided with a third through hole, and the guide rod III is connected in the third through hole.

Therefore, the first to third floats are conveniently and reliably connected with the corresponding first to third guide rods.

The disclosure of the present application also includes the following points:

(1) the drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;

(2) in case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;

the above embodiments are only embodiments disclosed in the present disclosure, but the scope of the disclosure is not limited thereto, and the scope of the disclosure should be determined by the scope of the claims.