Household air conditioner float type liquid level sensor

Abstract

The application discloses a household air conditioner float type liquid level sensor and a manufacturing method thereof, and comprises a sensor body, a protective sleeve, two symmetrical opening grooves on the protective sleeve, a protective net matched and clamped in the opening grooves, and a limiting ring plate sleeved on the protective sleeve. The method steps are as follows: (1) processing of the protective sleeve; and (2) component assembly. The application can protect the measuring rod from collision through the design of the protective sleeve, and the opening grooves and the protective nets are arranged on the protective sleeve. The protective nets can not only play a protective and shielding role, but also will not affect the circulation of the fluid in the equipment, improve the measurement accuracy of the liquid level sensor, and the limiting ring plate is sleeved on the protective sleeve to indirectly connect and fix the two protective nets, so that the installation stability of the protective nets and the limiting ring plate on the protective sleeve is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid level sensors, in particular to a float type liquid level sensor for household air conditioners and a manufacturing method thereof. BACKGROUND

[0002] The height of liquid medium in a container is called liquid level, and the instrument for measuring the liquid level is called a liquid level meter. The liquid level meter is a kind of mechanical instrument, which has the advantages of simple structure, convenient use, stable performance, long service life, easy installation and maintenance, and is widely used in liquid level measurement in the fields of petroleum processing, food processing, chemical industry, water treatment, pharmaceutical industry, power industry, papermaking, metallurgy, shipbuilding and boiler. The float type liquid level meter is a commonly used liquid level meter. The float type liquid level sensor mainly consists of a magnetic float ball, a sensor and a transmitter. When the float (float ball) rises due to the rise of the liquid level, the connecting rod pushes the rotating shaft to rotate, and the pointer rotates, so that the height of the liquid level can be read from the calibrated scale. In use, the measuring rod of the existing float type liquid level meter is easy to hit the inner wall of the equipment, causing damage and affecting the use of the liquid level meter. SUMMARY

[0003] The present application relates to the technical field of liquid level sensors, in particular to a float type liquid level sensor for household air conditioners and a manufacturing method thereof.

[0004] In order to solve the above technical problems, the following technical solutions are adopted:

[0005] The utility model provides a household air conditioner float type liquid level sensor, including sensor body, its characterized in be further including protective sleeve, protective sleeve is wrapped and is set on the outside of the measuring rod of sensor body, and protective sleeve is flange connected with sensor body, and two open slots are symmetrically arranged on the protective sleeve, and the protective sleeve is matched with the protection net of the open slot, and the limiting ring plate is set on the protective sleeve, and the limiting ring plate is located at the upper and lower ends of the protection net, and the limiting ring plate is fixedly connected with the protection net, the measuring rod is located in the cavity of the protective sleeve, thereby the measuring rod is protected through the protective sleeve, and the collision of the measuring rod is avoided, and the cavity of the protective sleeve has a certain space size, the movement of the magnetic floating ball on the measuring rod is not affected, and two open slots are set on the protective sleeve, and the protection net is installed in the open, the design of the hollow mesh structure of the protection net can not only protect the measuring rod, but also will not affect the flow of fluid in the equipment, thereby the measuring accuracy of the liquid level sensor is improved, and the connection between the two protection nets is realized through the limiting ring plate, the limiting ring plate and the protection net are fixedly connected as a whole, and the limiting ring plate and the protection net are mutually restrained, the installation firmness of the protection net on the protective sleeve is effectively ensured, and the actual dismounting is convenient.

[0006] Further, the two ends of the protection net are provided with extension plates, the extension plates are provided with through holes, the limiting ring plate is provided with limiting columns, the limiting columns are matched with the through holes, the limiting columns pass through the corresponding extension plates through the through holes, and the extension ends of the limiting columns are provided with fastening nuts, the structure design is ingenious and reasonable, the through holes can be conveniently arranged through the design of the extension plates, the through holes are matched with the limiting columns, the accurate clamping and limiting between the limiting ring plate and the protection net are realized, the installation firmness and reliability between the limiting ring plate and the protection net are effectively ensured through the limiting and fixing of the fastening nuts, and the dismounting is convenient, and the protection net can be conveniently dismounted and cleaned subsequently.

[0007] Further, the two sides of the extension plate are provided with blocking convex parts, the blocking convex parts are abutted and limited on the outer wall of the protective sleeve, the design of the blocking convex part is more ingenious and reasonable, the blocking convex part can play a limiting role, the actual clamping and installation of the protection net and the protective sleeve are convenient, when the protection net is clamped into the open slot, the blocking convex part abuts the outer wall of the protective sleeve, the protection net is clamped in place, the clamping firmness of the protection net on the protective sleeve is ensured, and the installation and positioning between the limiting ring plate and the protection net are convenient subsequently.

[0008] Further, the two limiting ring plates are connected through a reinforcing rod, the two extension ends of the reinforcing rod are provided with clamping nuts, the design of the reinforcing rod can realize the further connection between the two limiting ring plates, the clamping and limiting of the clamping nuts at the two ends are matched, the overall structural firmness and stability are effectively improved, the reinforcing rod can also facilitate the subsequent installation of the fixing part, and the overall structure design is more ingenious and reasonable.

[0009] Further, the two extending ends of the reinforcing rod are provided with fixing members, which are detachably connected with the reinforcing rod. The fixing members can be fixed to the inner wall of the equipment, thereby protecting the stable installation of the liquid level sensor in the equipment, and the detachable connection between the fixing members and the reinforcing rod does not affect the disassembly of the limiting ring plate and the protective net.

[0010] Further, the fixing member comprises a supporting seat, a connecting rod and a mounting flange. The connecting rod is fixedly connected between the supporting seat and the mounting flange. The supporting seat is provided with a connecting through hole matched with the reinforcing rod. The supporting seat is sleeved on the reinforcing rod through the connecting through hole. The clamping nut is limited on the corresponding supporting seat. The structure design is reasonable. The connecting rod connects the supporting seat and the mounting flange, thereby ensuring the structural strength of the fixing member. The preliminary sleeving and clamping between the fixing member and the reinforcing rod can be realized through the connecting through hole on the supporting seat. The installation firmness and reliability of the fixing member are effectively ensured through the limiting and fixing of the clamping nut. The supporting stability of the fixing member to the entire liquid level sensor is ensured. The mounting flange realizes the mounting and fixing between the fixing member and the inner part of the equipment, thereby ensuring the installation firmness between the fixing member and the inner wall of the equipment. The mounting and dismounting are convenient and simple.

[0011] Further, the protective net is uniformly provided with mesh holes, which are circular, rhombic or hexagonal. The shape design is reasonable, thereby facilitating the actual processing and molding.

[0012] Further, the top end of the protective sleeve is provided with a lower flange plate. The sensor body is provided with an upper flange plate. The lower flange plate and the upper flange plate are bolted and fixedly connected. The protective sleeve and the sensor body are fixedly connected through the flanges, thereby effectively ensuring the installation firmness and reliability between the protective sleeve and the sensor body. The protective sleeve and the sensor body are detachable through the connection mode, thereby facilitating the actual disassembly and maintenance.

[0013] The manufacturing method of the float type liquid level sensor of the household air conditioner is characterized by comprising the following steps:

[0014] (1) Processing of the protective sleeve:

[0015] a. According to the design requirements, a sleeve is cut out. According to the design requirements, the cutting line position of the two side opening grooves is marked on the sleeve. The opening groove is designed as a quadrilateral structure. The cutting line of each opening groove comprises two arc cutting lines at both ends and two horizontal cutting lines at both sides. First, the blank is cut according to the design requirements to obtain a protective sleeve semi-finished product without opening grooves, i.e. a sleeve.

[0016] b. Install the sleeve on the limit device, one end of the sleeve is clamped on the clamping sleeve, and the positioning column on the clamping sleeve is inserted and supported in the sleeve; when the sleeve is installed on the limit device, one end is clamped on the clamping sleeve, and the positioning column on the clamping sleeve is matched and inserted in the cavity of the sleeve to provide auxiliary support and fixation for the sleeve. During the installation of the sleeve, it will pass through the two limit devices, the middle support seat and the end support seat, thereby providing auxiliary support and lifting through the limit device, the middle support seat and the end support seat, effectively ensuring the installation and placement stability and reliability of the sleeve on the limit device, thereby facilitating the subsequent cutting operation of the open slot;

[0017] c. Adjust the position of the end support seat according to the actual length of the casing, loosen the first fixing screw, move the end support seat along the guide plate, adjust the position of the end clamping ring on the upper part of the end support seat on the casing, so that the end clamping ring moves and is clamped at the other end of the casing, and then tighten the first fixing screw to limit and fix the end support seat on the bottom plate; after the casing is clamped in place on the clamping sleeve, adjust the position of the end support seat according to the actual length of the casing, so that the end support seat moves to the end of the casing that is not clamped and supported, thereby supporting both ends of the casing through the clamping sleeve and the end support seat, ensuring that the casing is in the limit device The overall stability after installation is improved, the structural balance and firmness are improved, and the subsequent cutting operation is also convenient. During the adjustment process of the end support seat, the end clamping ring is clamped on the surface of the casing and moves along the surface of the casing. After the end clamping ring moves into place on the casing, the first set screw is tightened to fix the bottom limit of the end support seat on the bottom plate, ensuring the structural firmness of the end support seat after it moves into place, ensuring that the end support seat firmly supports and lifts the casing, and the end support seat is always guided by the limit of the guide plate during movement to ensure the horizontality during the adjustment process, which is more convenient for the actual adjustment operation;

[0018] d. According to the actual length of the sleeve, the position of the middle support base is adjusted, the second set screw is loosened, the middle support base is moved along the guide plate until the middle support base is moved below the middle part of the sleeve, the upper arc-shaped supporting part of the middle support base supports and holds the bottom of the sleeve, the second set screw is tightened to limit and fix the middle support base on the guide plate, and at the same time, during the adjustment of the middle support base, the bottom of the middle support base is always limited in the dovetail slide groove on the bottom plate and synchronously slides along the dovetail slide groove; according to the actual length of the sleeve, the position of the middle support base is adjusted, the arc-shaped supporting part on the upper part of the middle support base is always attached to and holds the bottom surface of the sleeve, the arc-shaped supporting part on the upper part of the middle support base is moved to the middle part of the sleeve to assist in supporting and holding the middle part of the sleeve, thereby cooperating with the clamping sleeve and the end support base to support and hold the sleeve from both ends and the middle part, effectively ensuring the overall stability and firmness of the sleeve on the limiting device, the second set screw is tightened to limit and fix the middle support base after the middle support base is adjusted in place, the structural stability and reliability of the middle support base after being moved in place are ensured, the middle support base is always limited and guided by the guide plate during movement, the horizontal nature of the movement is ensured, the bottom of the middle support base is also always limited and slides in the dovetail slide groove on the bottom plate, and synchronously slides along the dovetail slide groove, effectively ensuring the smoothness and reliability of the movement and adjustment of the middle support base, and ensuring the horizontal nature of the adjustment;

[0019] e、Loosen the third set screw, adjust the position of the two limit components, the two limit components are oppositely arranged, the limit component includes a limit frame and a limit disc fixedly connected with the limit frame, move the limit frame along the guide plate, the limit ring on the upper part of the limit frame moves along the surface of the sleeve synchronously, and the limit disc fixedly connected with the limit frame is driven to move along the surface of the sleeve synchronously during the movement of the limit frame, adjust the position of the limit disc on the sleeve, until the end face with scale on the two limit discs moves to the position corresponding to the alignment of the two arc cutting lines in the opening slot cutting line, then tighten the third set screw to limit and fix the limit frame on the guide plate, and the bottom of the limit frame is always limited in the dovetail sliding groove on the bottom plate during the movement of the limit frame, and moves synchronously along the dovetail sliding groove; The entire limiting device includes two symmetrically distributed limit components, the two limit components are located between the clamping sleeve and the end support seat, and the two limit components are distributed on the two sides of the middle support seat, the limit component includes a limit frame and a limit disc, the limit disc is fixed with the limit frame, the limit discs on the two limit components are oppositely arranged, while the limit ring on the top of the limit frame and the limit disc are clamped on the surface of the sleeve, which plays an auxiliary supporting role for the sleeve, and also facilitates the accurate positioning and adjustment of the cutting line, the positions of the two limit frames are adjusted according to the positions of the two arc cutting lines in the opening slot cutting line on the sleeve, scales are arranged on the opposite surfaces of the two limit discs, the limit disc is driven to move along the sleeve by adjusting the limit frame, so that the end faces of the two limit discs with scales are aligned one by one corresponding to the positions of the two arc cutting lines in the opening slot cutting line, so that the distance between the two limit discs corresponds to the length of the horizontal cutting line in the opening slot cutting line, and the two limit discs correspond to the positions of the two ends of the horizontal cutting line, realize preliminary positioning, and during the movement of the limit component, the limit frame is always limited and guided by the guide plate and the dovetail sliding groove, ensuring the horizontality and stability during the overall movement, so that the actual adjustment groove is more convenient, and after adjustment, the limit frame is limited and fixed by tightening the third set screw, ensuring the structural firmness and stability of the limit frame after adjustment;

[0020] f、loosen the fourth set screw, adjust the position of the two markers on the limiting disc according to the actual arc of the arc-shaped cutting line, the zero scale line on the limiting disc is located at the center of the top surface of the scale end face, rotate the two markers on the limiting disc to the two sides of the zero scale line respectively, the angle of the marker rotation is half of the corresponding angle of the arc of the arc-shaped cutting line, so that the two markers on the same limiting disc form an angle corresponding to the angle corresponding to the arc of the arc-shaped cutting line after the marker is rotated in place, and then tighten the fourth set screw to limit and fix the marker on the limiting disc; two markers are arranged on each limiting disc, and the angle between the two markers is adjusted to correspond to the angle corresponding to the arc of the arc-shaped cutting line, so as to realize further accurate positioning. The zero scale line on the scale end face of the limiting disc is located at the center of the top surface of the end face, so that the accurate adjustment of the angle of the two markers can be facilitated, the accurate reading of the angle can be facilitated, and the actual adjustment can be facilitated. The two markers are moved to the two sides respectively with the zero scale as the reference, and the angles of rotation to the two sides are equal, which are half of the corresponding angle of the arc of the arc-shaped cutting line, so that the corresponding angle of the measuring tips of the two markers is equal to the corresponding angle of the arc of the arc-shaped cutting line, further accurate adjustment is realized, and the final cutting surface is located directly above, facilitating subsequent cutting of the open slot. The markers are limited and fixed with the limiting disc by the fourth set screw after the markers are moved in place, the accuracy of the marker adjustment is ensured, the sleeve is further adjusted and positioned, the cutting line of the open slot can be rotated to the top, and the actual cutting operation is facilitated;

[0021] g、rotate the sleeve, so that the cutting line of the open slot at one place on the sleeve is rotated to the top, the two ends of the arc-shaped cutting line of the open slot are aligned one by one with the measuring tips of the two markers on the corresponding limiting disc, and then the fastening screw is tightened to limit and fix the sleeve on the clamping sleeve; rotate the sleeve so that the cutting line of the open slot at one place on the sleeve is rotated to the top, so that the two ends of the arc-shaped cutting line on the cutting line correspond to the measuring tips of the two markers on the corresponding limiting disc, thereby realizing accurate adjustment and positioning of the cutting line of the open slot, so that the open slot is rotated to the top, facilitating subsequent cutting operation. The sleeve is limited and fixed between the clamping sleeve by the fastening screw after the sleeve is rotated in place, the rotation of the sleeve is limited, so that the sleeve does not rotate in the subsequent cutting process, thereby improving the actual cutting precision and cutting quality;

[0022] h, the cutting device is used to form an opening groove along the cutting line, in the cutting process of the arc-shaped cutting line of the opening groove, the cutting knife is attached to the end face of the limiting disc with a scale, and the cutting operation is performed along one of the two measuring tips to the other measuring tip, and the cutting knife is always attached to the end face of the limiting disc with a scale during the cutting process until the cutting knife touches the other measuring tip, and the arc-shaped cutting line is cut in place, and in the cutting process of the horizontal cutting line of the opening groove, the cutting knife is attached to the measuring tip at one end of the horizontal cutting line, and the horizontal cutting operation is performed along the end face with a scale in the corresponding limiting disc to the end face of the other limiting disc until it touches the end face with a scale of the other limiting disc; in the cutting process of the opening groove, when cutting the arc-shaped cutting line, the limiting disc corresponding to the arc-shaped cutting line is used as the attachment surface to ensure the accuracy of the cutting, and the cutting process moves from one of the measuring tips of the corresponding limiting disc to the direction of the measuring tip of the other marker to ensure the cutting accuracy of the entire arc-shaped cutting line, ensure the cutting efficiency and quality, avoid cutting errors caused by misoperation, affect the processing, and ensure the perfect cutting operation of the arc-shaped line through the two measuring tips as the limiting, and always attach the end face of the limiting disc to cut to ensure the accuracy of the cutting position and improve the actual cutting quality. In the cutting process of the horizontal cutting line, the cutting knife is attached to the measuring tip at one end of the horizontal cutting line, and the cutting operation is performed linearly from one limiting disc to the other limiting disc direction, effectively ensuring the actual cutting accuracy and cutting quality, ensuring the accuracy of the cutting position, effectively improving the cutting efficiency and cutting quality of the opening groove through the limiting of the two limiting components, ensuring the accuracy of the opening groove cutting size, and effectively avoiding the phenomenon of cutting error caused by excessive cutting due to misoperation through the double limiting and guiding of the marker and the limiting disc, improving the actual cutting operation safety performance;

[0023] i, after the opening groove on one side of the sleeve is cut, the rotating motor is started, the rotating motor drives the clamping sleeve to rotate 180°, the clamping sleeve drives the sleeve fixed therewith to rotate 180°, so that the cutting line of the opening groove on the other side is just rotated above, and then the cutting device is used to cut the opening groove on the other side according to the above step h; since the two opening grooves on the sleeve are symmetrically distributed on the sleeve, the sleeve is rotated 180° after the opening groove on one side is cut, so that the cutting line of the opening groove on the other side is just rotated completely above, corresponding to the limiting disc and the marker, and then the opening groove on the other side is cut according to the previous cutting process. The entire cutting process is efficient and high-quality, effectively ensures the cutting accuracy, and the rotation of the sleeve is directly driven by the rotating motor to ensure the accuracy of the rotation angle, ensure that the opening groove is rotated in place, and the rotation adjustment is automatic, which is convenient for actual adjustment operation;

[0024] (2) Component assembly:

[0025] a. Weld the lower flange on the top of the protective sleeve; weld the lower flange and the protective sleeve into an integral structure to ensure the installation firmness between the lower flange and the protective sleeve, and facilitate the subsequent connection and installation between the lower flange and the sensor body, which is a reasonable design;

[0026] b. Install two limiting ring plates from the bottom end of the protective sleeve so that the limiting ring plates are located on both sides of the opening groove respectively, and connect the protective net to the opening groove until the convex parts at both ends of the protective net touch the protective sleeve, and adjust the position and angle of the limiting ring plates so that the limiting posts on the limiting ring plates correspond to the perforations on the extension plates at the ends of the protective net, and the limiting posts pass through the perforations, and then insert the fastening nuts into the extended ends of the limiting posts and tighten them; the installation sequence is reasonable and easy to operate, first put the two limiting ring plates on the protective sleeve, and ensure that the two limiting ring plates are located on both sides of the opening groove respectively, so as to facilitate the subsequent installation between the protective net and the limiting ring plates, and then match the protective net and insert it into the opening The cam is then screwed into the slot and the retaining nut is screwed in to secure it in place. This effectively ensures the securement of the installation between the protective net and the retaining ring plate, so that the protective net and the retaining ring plate are restrained and limited by each other, ensuring the securement and reliability of the installation of the protective net on the protective cover. This installation method is also convenient for subsequent disassembly, replacement, cleaning, and maintenance of the protective net. The entire installation process is reasonable, clear, and easy to operate.

[0027] c. Pass the connecting reinforcement rod through the through hole reserved between the upper and lower limiting ring plates, and install the fixing piece to the two extended ends of the reinforcement rod, the connecting through hole on the support seat corresponds to the reinforcement rod, the support seat is sleeved to the end of the reinforcement rod, and the arc surface on the support seat is attached and clamped on the outer wall of the protective cover, and then the clamping nut is screwed into the reinforcement rod and tightened; the through connection between the reinforcement rod and the two limiting ring plates is realized through the reserved through hole, and the sleeve installation between the fixing piece and the reinforcement rod is realized through the connecting through hole on the support seat, and it is ensured that the arc surface of the support seat is attached to the protective cover, so that the overall installation of the fixing piece is more reliable and stable, and finally the fixing piece is limited by the clamping nut, so that the two fixing pieces are firmly installed on the two extended ends of the reinforcement rod by clamping and fixing the upper and lower clamping nuts. The design is ingenious and reasonable, and the disassembly and assembly are convenient and simple;

[0028] d. Select a sensor body that matches the protective sleeve from the market, align the lower flange at the top of the protective sleeve with the upper flange on the sensor body, and use bolts to install and fix between the upper and lower flanges. The sensor body is directly purchased from the market as an existing product, and is installed and combined with the protective sleeve. The cooperation of the upper and lower flanges and the bolts effectively ensures the firmness of the installation between the protective sleeve and the sensor body. The overall installation and disassembly is convenient and simple, easy to operate, and also convenient for subsequent disassembly and maintenance.

[0029] Further, in step f of step (1), the end face of the limiting disc without a scale is provided with an annular clamping groove, the end of the rod is movably inserted into the annular clamping groove, and a stop ring block is arranged in the annular clamping groove. The end of the rod is provided with a limiting clamping groove, which matches the stop ring block. When the rod moves along the outer circumferential surface of the limiting disc, the end of the rod slides along the annular clamping groove, and the end of the rod is always limited and guided by the stop ring block. The structure is clever and reasonable. The rotation of the rod end and the limiting disc is achieved by the design of the annular clamping groove. The other end of the rod is provided with a measuring tip, which is located on the other side of the limiting disc. When the rod is rotated along the outer circumferential surface of the limiting disc, the rod is stably rotated and adjusted by being clamped in the end of the annular clamping groove. The end of the rod provided with the measuring tip is rotated along the scale end to adjust the angle. The stop ring block is integrally formed in the annular clamping groove. The design of the stop ring block and the limiting clamping groove effectively ensures the stability of the clamping of the rod in the annular clamping groove, limits the disengagement of the rod from the annular clamping groove, and makes the angle adjustment process of the rod more stable and safe, and more convenient for actual operation.

[0030] Further, in step i of step (1), the clamping sleeve is rotationally clamped on the auxiliary support. When the clamping sleeve is rotated by the driving motor, the clamping sleeve is always limited and guided by the auxiliary support for axial rotation, so as to realize the rotation adjustment of the sleeve pipe angle. The auxiliary support is fixedly supported on the bottom plate. The auxiliary support limiting makes the structure of the entire limiting device more stable, ensures the stable installation and fixation of the clamping sleeve to the end of the sleeve pipe, and the rotation clamping of the clamping sleeve and the auxiliary support does not affect the rotation adjustment of the clamping sleeve driven by the driving motor. The design is clever and reasonable, and improves the safety and firmness of the entire structure.

[0031] Due to the adoption of the above technical scheme, the following beneficial effects are achieved:

[0032] The application has reasonable structure design and strong practicability. The design of the protective sleeve can protect the measuring rod from collision. The opening groove is provided on the protective sleeve, and the protective net is installed in the opening groove. The protective net can not only play a protection and shielding role, but also will not affect the circulation of fluid in the equipment, improve the measurement accuracy of the liquid level sensor, and the limiting ring plate is sleeved on the protective sleeve. The indirect connection and fixation between the two protective nets are realized through the limiting ring plate, and the limiting ring plate and the protective net are matched and restrained with each other, so that the installation stability of the protective net and the limiting ring plate on the protective sleeve is ensured.

[0033] The application adopts the limiting device to assist in supporting and positioning in the cutting of the opening groove on the protective sleeve. The pipeline is supported and stabilized by the clamping sleeve, the middle supporting seat, the end supporting seat and the two limiting assemblies, which effectively ensures the installation stability and reliability of the sleeve on the limiting device, facilitates the actual cutting operation, and the cutting line of the opening groove is precisely positioned and adjusted by the two limiting assemblies, so that the opening groove is just rotated to the directly above, which facilitates the actual cutting operation, thereby improving the actual cutting efficiency. In addition, the two limiting assemblies can also play a further guiding and limiting operation during the cutting process, so as to ensure the accuracy of the cutting length and angle, thereby improving the final cutting quality. Moreover, after the cutting of one side opening groove is completed, the sleeve is rotated by 180° as a whole, so that the other opening groove is precisely positioned, and then the cutting operation is performed, thereby improving the overall cutting efficiency and cutting safety. BRIEF DESCRIPTION OF DRAWINGS

[0034] The application will be further described below with reference to the drawings:

[0035] Figure 1 It is a position structure diagram of the measuring rod in the protective sleeve in the application;

[0036] Figure 2 It is an installation structure diagram between the protective net, the limiting ring plate and the protective sleeve in the application;

[0037] Figure 3 It is a structure diagram of the protective net in the application;

[0038] Figure 4 It is a structure diagram of the fixing part in the application;

[0039] Figure 5 It is a structure diagram of the protective sleeve in the application;

[0040] Figure 6 It is a structure diagram of the limiting ring in the application;

[0041] Figure 7 It is a state structure diagram when one opening groove on the sleeve is rotated to the directly above and the limiting assembly is precisely positioned;

[0042] Figure 8 It is the structure schematic diagram of the application in the state after the opening slot cutting;

[0043] Figure 9 It is the structure schematic diagram of the application in the state after the opening slot cutting;

[0044] Figure 10 It is the structure schematic diagram of the application in the state after the opening slot cutting;

[0045] Figure 11 It is the structure schematic diagram of the application in the state after the opening slot cutting;

[0046] Figure 12 It is the structure schematic diagram of the application in the state after the opening slot cutting;

[0047] Figure 13 It is the structure schematic diagram of the application in the state after the opening slot cutting;

[0048] Figure 14 It is the structure schematic diagram of the application in the state after the opening slot cutting.

[0049] In the figure: 1-sensor body; 2-protection sleeve; 3-measuring rod; 4-opening slot; 5-protection net; 6-limiting ring plate; 7-extended expansion plate; 8-perforation; 9-limiting column; 10-fastening nut; 11-stop convex part; 12-reinforcing rod; 13-fixing piece; 14-clamping nut; 15-supporting seat; 16-connecting rod; 17-mounting flange; 18-connecting through hole; 19-mesh; 20-upper flange plate; 21-lower flange plate; 22-magnetic floating ball; 23-limiting device; 24-arc-shaped cutting line; 25-horizontal cutting line; 26-clamping sleeve; 27-positioning column; 28-first set screw; 29-end supporting seat; 30-guiding plate; 31-end clamping ring; 32-middle supporting seat; 33-second set screw; 34-arc-shaped supporting part; 35-dovetail sliding groove; 36-third set screw; 37-limiting assembly; 38-limiting frame; 39-limiting ring; 40-limiting disc; 41-flagpole; 42-measuring tip; 43-fourth set screw; 44-fastening screw; 45-rotary motor; 46-annular clamping groove; 47-stop ring block; 48-limiting clamping groove; 49-assistant support; 50-scale; 51-bottom plate. DETAILED DESCRIPTION

[0050] As Figures 1 to 6The household air conditioner float type liquid level sensor shown in the figure comprises a sensor body 1, further comprises a protective sleeve 2, the protective sleeve 2 is wrapped outside the measuring rod 3 arranged in the sensor body 1, the protective sleeve 2 is flange connected with the sensor body 1, the flange connection can facilitate the disassembly between the protective sleeve 2 and the sensor body 1, ensure the installation firmness, and the installation design is ingenious and reasonable, convenient for subsequent maintenance, two open grooves 4 are symmetrically arranged on the protective sleeve 2, the protective net 5 is matched and clamped in the open groove 4, the limiting ring plate 6 is sleeved on the protective sleeve 2, the limiting ring plate 6 is located at the upper and lower ends of the protective net 5, and the limiting ring plate 6 is fixedly connected with the protective net 5; the measuring rod 3 is located in the cavity of the protective sleeve 2, so that the measuring rod 3 is protected by the protective sleeve 2, and the collision of the measuring rod 3 is avoided, furthermore, the cavity of the protective sleeve 2 has a certain space size, the movement of the magnetic floating ball 22 on the measuring rod 3 is not affected, two open grooves 4 are symmetrically arranged on the protective sleeve 2, and the protective net 5 is installed in the opening, the design of the hollow mesh structure of the protective net 5 can not only protect the measuring rod 3, but also will not affect the circulation of the fluid in the equipment, so that the measurement accuracy of the liquid level sensor is improved, and the connection between the two protective nets 5 is realized through the limiting ring plate 6, so that the limiting ring plate 6 and the protective net 5 are fixedly connected as a whole, and the limiting ring plate 6 and the protective net 5 are mutually restrained, so that the installation firmness of the protective net 5 on the protective sleeve 2 is effectively ensured, and the actual disassembly is facilitated.

[0051] The two ends of the protective net 5 are provided with the extended expansion plates 7, the extended expansion plates 7 are provided with the through holes 8, the limiting columns 9 are arranged on the limiting ring plate 6, the limiting columns 9 are matched with the through holes 8, the limiting columns 9 penetrate through the corresponding extended expansion plates 7 through the through holes 8, and the extended end portions of the limiting columns 9 are provided with the fastening nuts 10, so that the structure design is ingenious and reasonable, the design of the extended expansion plates 7 can facilitate the arrangement of the through holes 8, the through holes 8 are matched with the limiting columns 9, the accurate clamping and limiting between the limiting ring plate 6 and the protective net 5 are realized, the installation firmness and reliability between the limiting ring plate 6 and the protective net 5 are effectively ensured through the limiting and fixing of the fastening nuts 10, and the disassembly is convenient, so that the disassembly and cleaning of the protective net 5 are facilitated.

[0052] The two sides of the extended expansion plate 7 are provided with the blocking convex portions 11, the blocking convex portions 11 abut against and are limited on the outer sidewall of the protective sleeve 2, the design of the blocking convex portions 11 is more ingenious and reasonable, the blocking convex portions 11 can play a limiting role, the actual clamping and installation of the protective net 5 and the protective sleeve 2 are facilitated, when the protective net 5 is clamped into the open groove 4 and the blocking convex portions 11 abut against the outer sidewall of the protective sleeve 2, the protective net 5 is clamped in place, the clamping firmness of the protective net 5 on the protective sleeve 2 is ensured, and the installation and positioning between the limiting ring plate 6 and the protective net 5 are facilitated.

[0053] The reinforcing rod 12 is provided with a clamping nut 14 at both extension ends, and the design of the reinforcing rod 12 can realize further connection between the upper and lower limiting ring plates 6, and the clamping and limiting of the clamping nuts 14 at both ends can effectively improve the overall structural firmness and stability, and the reinforcing rod 12 can also facilitate the installation of the subsequent fixing member 13, and the overall structure design is more ingenious and reasonable.

[0054] The reinforcing rod 12 is provided with a clamping nut 14 at both extension ends, and the design of the reinforcing rod 12 can realize further connection between the upper and lower limiting ring plates 6, and the clamping and limiting of the clamping nuts 14 at both ends can effectively improve the overall structural firmness and stability, and the reinforcing rod 12 can also facilitate the installation of the subsequent fixing member 13, and the overall structure design is more ingenious and reasonable.

[0055] The fixing member 13 includes a support seat 15, a connecting rod 16 and a mounting flange 17, the connecting rod 16 is fixedly connected between the support seat 15 and the mounting flange 17, the support seat 15 is provided with a connecting through hole 18 matched with the reinforcing rod 12, the support seat 15 is sleeved on the reinforcing rod 12 through the connecting through hole 18, and the clamping nut 14 is limited on the corresponding support seat 15, so that the structure design is reasonable, the connecting rod 16 connects the support seat 15 and the mounting flange 17 to ensure the structural strength of the fixing member 13, the preliminary sleeving and clamping between the fixing member 13 and the reinforcing rod 12 can be realized through the connecting through hole 18 on the support seat 15, the installation firmness and reliability of the fixing member 13 are effectively ensured through the limiting and fixing of the clamping nut 14, the support and stability of the fixing member 13 to the entire liquid level sensor are ensured, the mounting flange 17 realizes the mounting and fixing between the fixing member 13 and the inside of the equipment, the installation firmness between the fixing member 13 and the inner wall of the equipment is ensured, and the mounting and dismounting is convenient and simple.

[0056] The protective net 5 is uniformly provided with mesh holes, and the mesh holes are circular, rhombic or hexagonal, and the shape design is reasonable, facilitating actual processing and molding.

[0057] The top end of the protective sleeve 2 is provided with a lower flange plate 21, the sensor body 1 is provided with an upper flange plate 20, the lower flange plate 21 and the upper flange plate 20 are bolted and fixedly connected, the protective sleeve 2 and the sensor body 1 are connected in a flange fixed connection mode, the installation firmness and reliability between the protective sleeve 2 and the sensor body 1 are effectively ensured, and the protective sleeve 2 and the sensor body 1 can be disassembled in this connection mode, so that the actual disassembly and maintenance are facilitated.

[0058] As shown in Figures 7 to 14 The manufacturing method of the household air conditioner float type liquid level sensor includes the following steps:

[0059] (1) Processing of the protective sleeve 2:

[0060] a、According to the design requirements, cut out a sleeve, and measure the line on the sleeve according to the design requirements, mark the cutting line position of the two side opening grooves 4, and the opening groove 4 is designed as a quadrilateral structure, and the cutting line of each opening groove 4 includes two arc-shaped cutting lines 24 at both ends and two horizontal cutting lines 25 at both sides; first, cut the blank according to the design requirements to obtain a protective sleeve 2 semi-finished product without opening groove 4, that is, a sleeve.

[0061] b、The sleeve is installed on the limiting device 23, one end of the sleeve is clamped to the clamping sleeve 26, and the positioning column 27 on the clamping sleeve 26 is inserted and supported in the sleeve; when the sleeve is installed on the limiting device 23, one end is clamped to the clamping sleeve 26, and the positioning column 27 on the clamping sleeve 26 is matched and inserted into the cavity of the sleeve, which assists in supporting and fixing the sleeve, and during the installation of the sleeve, it will pass through two limiting devices 23, a middle support seat 32 and an end support seat 29, thereby being assisted and supported by the limiting devices 23, the middle support seat 32 and the end support seat 29, effectively ensuring the stability and reliability of the installation of the sleeve on the limiting device 23, thereby facilitating the subsequent cutting operation of the opening groove 4;

[0062] c、According to the actual length of the sleeve, adjust the position of the end support seat 29, loosen the first tightening screw 28, move the end support seat 29 along the guide plate 30, adjust the position of the end clamping ring 31 on the upper end of the end support seat 29 on the sleeve, so that the end clamping ring 31 moves and is clamped at the other end of the sleeve, and then the first tightening screw 28 is tightened to limit and fix the end support seat 29 on the bottom plate 51; after the sleeve is clamped in place on the clamping sleeve 26, the position of the end support seat 29 is adjusted according to the actual length of the sleeve, so that the end support seat 29 moves to the end of the sleeve that is not clamped and supported, thereby supporting the two ends of the sleeve through the clamping sleeve 26 and the end support seat 29, ensuring the overall stability of the sleeve after installation on the limiting device 23, improving the structural balance and firmness, and facilitating the subsequent cutting operation. During the adjustment of the end support seat 29, the end clamping ring 31 is clamped on the surface of the sleeve and moves along the surface of the sleeve until the end clamping ring 31 is moved in place on the sleeve, and then the first tightening screw 28 is tightened to limit and fix the bottom of the end support seat 29 on the bottom plate 51, ensuring the structural firmness of the end support seat 29 after moving in place, and ensuring the stable support and lifting of the end support seat 29 to the sleeve, and the end support seat 29 is always limited and guided by the guide plate 30 during the movement, ensuring the horizontality during the adjustment process, thereby facilitating the actual adjustment operation;

[0063] d、according to the actual length of the sleeve, adjust the position of the middle support base 32, loosen the second set screw 33, move the middle support base 32 along the guide plate 30, until the middle support base 32 moves below the middle of the sleeve, the upper arc-shaped supporting part 34 of the middle support base 32 supports and holds the bottom of the sleeve, tighten the second set screw 33 to limit and fix the middle support base 32 on the guide plate 30, at the same time, during the adjustment of the middle support base 32, the bottom of the middle support base 32 is always limited in the dovetail slide groove 35 on the bottom plate 51, and slides along the dovetail slide groove 35 synchronously; according to the actual length of the sleeve, adjust the position of the middle support base 32, the arc-shaped supporting part 34 on the upper part of the middle support base 32 is always attached to hold the bottom surface of the sleeve, move the arc-shaped supporting part 34 on the upper part of the middle support base 32 to the middle position of the sleeve, assist in supporting and holding the middle part of the sleeve, so as to cooperate with the clamping sleeve 26 and the end support base 29, support and hold the sleeve from both ends and the middle part, effectively guarantee the overall stability and firmness of the sleeve on the limiting device 23, after the middle support base 32 is adjusted in place, limit and fix the middle support base 32 by tightening the second set screw 33, guarantee the structural stability and reliability of the middle support base 32 after being moved in place, and the middle support base 32 is always limited and guided by the guide plate 30 during movement, guarantee the horizontal nature of movement, at the same time, the bottom of the middle support base 32 is always limited and slides in the dovetail slide groove 35 on the bottom plate 51, and slides along the dovetail slide groove 35 synchronously, effectively guarantee the smoothness and reliability of the movement and adjustment of the middle support base 32, and guarantee the horizontal nature of adjustment;

[0064] e、Loosen the third set screw 36, adjust the position of the two limiting components 37, the two limiting components 37 are oppositely arranged, the limiting component 37 includes a limiting frame 38 and a limiting disc 40 fixedly connected with the limiting frame 38, move the limiting frame 38 along the guide plate 30, the limiting ring 39 on the upper part of the limiting frame 38 moves synchronously along the surface of the sleeve, and the limiting disc 40 fixedly connected with the limiting frame 38 is driven to move synchronously along the surface of the sleeve during the movement of the limiting frame 38, adjust the position of the limiting disc 40 on the sleeve, until the end face with the scale 50 on the two limiting discs 40 moves to the position corresponding to the alignment of the two arc-shaped cutting lines 24 in the cutting line of the opening slot 4, then tighten the third set screw 36 to limit and fix the limiting frame 38 on the guide plate 30, and the bottom of the limiting frame 38 is always limited in the dovetail sliding groove 35 on the bottom plate 51 during the movement of the limiting frame 38, and moves synchronously along the dovetail sliding groove 35; the whole limiting device 23 includes two symmetrically distributed limiting components 37, the two limiting components 37 are located between the clamping sleeve 26 and the end support seat 29, and the two limiting components 37 are distributed on the two sides of the middle support seat 32, the limiting component 37 includes a limiting frame 38 and a limiting disc 40, the limiting disc 40 is fixed with the limiting frame 38, the limiting discs 40 on the two limiting components 37 are oppositely arranged, while the limiting ring 39 on the top of the limiting frame 38 and the limiting disc 40 are clamped on the surface of the sleeve, which plays an auxiliary supporting role for the sleeve, and also facilitates the accurate positioning and adjustment of the cutting line, the positions of the two limiting frames 38 are adjusted according to the positions of the two arc-shaped cutting lines 24 in the cutting line of the opening slot 4 on the sleeve, the opposite faces of the two limiting discs 40 are provided with scales 50, the limiting disc 40 is driven to move along the sleeve by adjusting the limiting frame 38, so that the end faces of the two limiting discs 40 provided with the scales 50 are corresponding to the alignment of the positions of the two arc-shaped cutting lines 24 in the cutting line of the opening slot 4, so that the distance between the two limiting discs 40 corresponds to the length of the horizontal cutting line 25 in the cutting line of the opening slot 4, and the two limiting discs 40 correspond to the positions of the two ends of the horizontal cutting line 25, which realizes preliminary positioning, and during the movement of the limiting component 37, the limiting frame 38 is always limited and guided by the guide plate 30 and the dovetail sliding groove 35, which ensures the horizontality and stability during the whole movement process, so as to facilitate the actual adjustment slot, and after adjustment, the limiting frame 38 is limited and fixed by tightening the third set screw 36, which ensures the structural firmness and stability of the limiting frame 38 after adjustment;

[0065] f、loosen the fourth set screw 43, adjust the position of the two markers 41 on the limiting disc 40 according to the actual arc of the arc-shaped cutting line 24, the zero scale 50 line on the end face of the scale 50 is located at the center of the top surface, and the two markers 41 on the limiting disc 40 are respectively rotated to both sides of the zero scale 50 line with the zero scale 50 line as the reference, the angle of the marker 41 rotation is half of the corresponding angle of the arc of the arc-shaped cutting line 24, so that after the marker 41 is rotated in place, the angle between the measuring tips 42 on the two markers 41 on the same limiting disc 40 corresponds to the angle corresponding to the arc of the arc-shaped cutting line 24, and then tighten the fourth set screw 43 to limit and fix the marker 41 on the limiting disc 40; Each limiting disc 40 is provided with two markers 41, and the angle between the two markers 41 is adjusted to correspond to the angle corresponding to the arc of the arc-shaped cutting line 24, so as to realize further accurate positioning. The zero scale 50 line on the end face of the scale 50 provided on the limiting disc 40 is located at the center of the top surface of the end face, so that the accurate adjustment of the angle of the two markers 41 can be facilitated, the accurate reading of the angle can be facilitated, and the actual adjustment can be facilitated. The two markers 41 are respectively moved to both sides with the zero scale 50 as the reference, and the angles of rotation to both sides are equal, which is half of the corresponding angle of the arc of the arc-shaped cutting line 24, so that the corresponding angle of the measuring tips 42 of the two markers 41 is exactly equal to the corresponding angle of the arc of the arc-shaped cutting line 24, further accurate adjustment is realized, the final cutting surface is exactly located directly above, the cutting operation of the open slot 4 is facilitated, the marker 41 is limited and fixed with the limiting disc 40 through the fourth set screw 43 after being moved in place, the accuracy after the marker 41 is adjusted is guaranteed, further adjustment and positioning of the sleeve can be facilitated, and the cutting line of the open slot 4 can be rotated to be directly above, which is convenient for actual cutting operation;

[0066] The end surface of the limiting disc 40 without the scale 50 is provided with an annular clamping groove 46, the end of the marker 41 is movably inserted into the annular clamping groove 46, and the annular clamping groove 46 is provided with a blocking ring block 47. The end of the marker 41 is provided with a limiting clamping groove 48 matched with the blocking ring block 47. When the marker 41 moves along the outer circular surface of the limiting disc 40, the end of the marker 41 slides along the annular clamping groove 46, and the end of the marker 41 is always limited and guided by the blocking ring block 47 to slide along the blocking ring block 47. The structure is clever and reasonable. The rotation clamping between the end of the marker 41 and the limiting disc 40 is realized through the design of the annular clamping groove 46. The other end of the marker 41 is provided with a measuring tip 42, and the measuring tip 42 is just located on the end surface of the limiting disc 40 provided with the scale 50 on the other side. Therefore, when the marker 41 is rotated along the outer circumferential surface of the limiting disc 40, the marker 41 is clamped at the end of the annular clamping groove 46 to stably rotate and adjust, and the end of the marker 41 provided with the measuring tip 42 rotates along the end of the scale 50 to realize the adjustment of the angle. The blocking ring block 47 in the annular clamping groove 46 is integrally formed. Through the design of the blocking ring block 47 matched with the limiting clamping groove 48, the clamping stability of the marker 41 in the annular clamping groove 46 is effectively ensured, and the marker 41 is prevented from being separated from the annular clamping groove 46, so that the angle adjustment process of the marker 41 is more stable and safe, and the actual operation is more convenient.

[0067] g. Rotate the sleeve so that the cutting line of the opening slot 4 at a position on the sleeve is rotated upward, and the two ends of the arc-shaped cutting line 24 of the opening slot 4 are just rotated to correspond to and align with the measuring tips 42 of the two markers 41 on the corresponding limiting disc 40. Then, the fastening screw 44 is tightened to limit and fix the sleeve on the clamping sleeve 26. Rotate the sleeve so that the cutting line of the opening slot 4 at a position on the sleeve is just rotated upward, and the two ends of the arc-shaped cutting line 24 on the cutting line are just corresponded to and overlapped with the measuring tips 42 of the two markers 41 on the corresponding limiting disc 40, so as to realize the accurate adjustment and positioning of the cutting line of the opening slot 4, and the opening slot 4 is just rotated upward, which is convenient for the subsequent cutting operation. After the sleeve is rotated to the position, the sleeve and the clamping sleeve 26 are limited and fixed by the fastening screw 44. The rotation of the sleeve is limited, so that the sleeve does not rotate in the subsequent cutting process, thereby improving the actual cutting precision and cutting quality.

[0068] h, the cutting device is used to form the opening groove 4 along the cutting line, in the cutting process of the arc-shaped cutting line 24 of the opening groove 4, the cutting knife is attached to the end face of the limiting disc 40 with the scale 50, and the cutting operation is carried out along one of the two measuring tips 42 to the other measuring tip 42, and the cutting knife is always attached to the end face of the limiting disc 40 with the scale 50 during the cutting process until the cutting knife touches the other measuring tip 42, and the arc-shaped cutting line 24 is cut in place, when the cutting process of the horizontal cutting line 25 of the opening groove 4 is carried out, the cutting knife is attached to the measuring tip 42 at one end of the horizontal cutting line 25, and the horizontal cutting operation is carried out along the end face of the corresponding limiting disc 40 with the scale 50 to the end face of the other limiting disc 40 until it touches the end face of the other limiting disc 40 with the scale 50; during the cutting process of the opening groove 4, when the arc-shaped cutting line 24 is cut, the limiting disc 40 corresponding to the arc-shaped cutting line 24 is attached as the attachment surface to ensure the cutting accuracy, and the cutting process moves from one of the measuring tips 42 of the corresponding limiting disc 40 to the direction of the measuring tip 42 of the other marker 41 to ensure the cutting accuracy of the entire arc-shaped cutting line 24, ensure cutting efficiency and quality, avoid cutting errors caused by misoperation, affect processing, and ensure perfect cutting operation of the arc-shaped line by two measuring tips 42 as limiting, and always cut by attaching the end face of the limiting disc 40 to ensure the accuracy of the cutting position and improve the actual cutting quality, and in the cutting process of the horizontal cutting line 25, the cutting knife is attached to the measuring tip 42 at one end of the horizontal cutting line 25, and the straight cutting operation is carried out from one limiting disc 40 to the other limiting disc 40, effectively ensuring the actual cutting accuracy and cutting quality, ensuring the accuracy of the cutting position, effectively improving the cutting efficiency and cutting quality of the opening groove 4 through the limiting of the two limiting components 37, ensuring the accuracy of the cutting size of the opening groove 4, and effectively avoiding the phenomenon of cutting error caused by excessive cutting due to misoperation through the double limiting and guiding of the marker 41 and the limiting disc 40, improving the actual cutting operation safety performance;

[0069] After the cutting operation is completed, the cutting machine 41 is turned on and the cutting tool 41 is turned off, so that the cutting line of the cutting tool 4 on the other side is exactly rotated upwards, and the cutting machine 41 is turned on and the cutting tool 41 is turned off.

[0070] The clamping sleeve 26 is rotatably connected to the auxiliary support 49. When the driving motor drives the clamping sleeve 26 to rotate, the clamping sleeve 26 is always guided by the limit of the auxiliary support 49 and rotates axially, thereby realizing the rotation adjustment of the sleeve angle. The auxiliary support 49 is fixedly supported on the bottom plate 51. The auxiliary support and limit of the auxiliary support 49 make the structure of the entire limit device 23 more stable, ensuring that the clamping sleeve 26 is firmly installed and fixed to the sleeve end. Moreover, the clamping sleeve 26 and the auxiliary support 49 are rotatably connected without affecting the rotation adjustment of the clamping sleeve 26 driven by the driving motor. The design is ingenious and reasonable, and improves the safety and firmness of the entire structure.

[0071] (2) Component assembly:

[0072] a. Weld the lower flange 21 to the top of the protective sleeve 2; the lower flange 21 and the protective sleeve 2 are fixed to form an integral structure by welding, thereby ensuring the installation firmness between the lower flange 21 and the protective sleeve 2, and facilitating the subsequent connection and installation between the lower flange 21 and the sensor body 1, which is a reasonable design;

[0073] b、From the bottom end of the protective sleeve 2, two limiting ring plates 6 are arranged in the opening slot 4 on both sides, and the protective net 5 is clamped into the opening slot 4 until the blocking convex part 11 at both ends of the protective net 5 abuts against the protective sleeve 2. The position and angle of the limiting ring plate 6 are adjusted so that the limiting column 9 on the limiting ring plate 6 corresponds to the perforation 8 on the extended expansion plate 7 at the end of the protective net 5. The limiting column 9 penetrates the perforation 8, and the fastening nut 10 is selected at the extended end of the limiting column 9 and is tightened. The installation sequence is reasonable and convenient to operate. First, the two limiting ring plates 6 are sleeved on the protective sleeve 2, and it is ensured that the two limiting ring plates 6 are located on both sides of the opening slot 4, thereby facilitating the subsequent installation between the protective net 5 and the limiting ring plate 6. Then, the protective net 5 is matched and clamped into the opening slot 4, and it is ensured that the blocking convex part 11 abuts against the side surface of the protective sleeve 2, thereby ensuring that the protective net 5 is clamped in place. Then, according to the already clamped protective net 5, the position and angle of the limiting ring plate 6 are adjusted so that the limiting column 9 on the limiting ring plate 6 corresponds to the perforation 8 on the extended expansion plate 7 at the end of the protective net 5. The limiting column 9 is inserted into the corresponding perforation 8, and the fastening nut 10 is screwed and fixed, effectively ensuring the installation firmness between the protective net 5 and the limiting ring plate 6, so that the protective net 5 and the limiting ring plate 6 are mutually restricted and limited, ensuring the installation firmness and reliability of the protective net 5 on the protective sleeve 2. Moreover, this installation method is also convenient for subsequent disassembly, replacement, cleaning and maintenance of the protective net 5. The whole installation process is reasonable and clear, and easy to operate.

[0074] c、The through hole reserved between the upper and lower limiting ring plates 6 is penetrated by the connecting reinforcing rod 12, and the fixing member 13 is installed at both extended ends of the reinforcing rod 12. The connecting through hole 18 on the supporting seat 15 corresponds to the reinforcing rod 12. The supporting seat 15 is sleeved on the end of the reinforcing rod 12, and the arc surface on the supporting seat 15 is attached and clamped on the outer side wall of the protective sleeve 2. The clamping nut 14 is screwed and tightened on the reinforcing rod 12. The through hole is reserved to realize the penetration connection between the reinforcing rod 12 and the two limiting ring plates 6. The connecting through hole 18 on the supporting seat 15 is used to realize the sleeving installation between the fixing member 13 and the reinforcing rod 12, and the arc surface of the supporting seat 15 is attached to the protective sleeve 2, so that the overall installation of the fixing member 13 is more reliable and stable. Finally, the fixing member 13 is limited by the clamping nut 14, so that the two fixing members 13 are stably installed at both extended ends of the reinforcing rod 12 through the clamping and fixing of the two clamping nuts 14. The design is ingenious and reasonable, and the disassembly and assembly are convenient and simple.

[0075] d, select the sensor body 1 matched with the protective sleeve 2 from the market, correspond the lower flange plate 21 at the top end of the protective sleeve 2 with the upper flange plate 20 on the sensor body 1, and install and fix between the upper flange plate 20 and the lower flange plate 21 with bolts, the sensor body 1 is directly purchased from the market existing product, and then combined and installed between the protective sleeve 2, the installation firmness between the protective sleeve 2 and the sensor body 1 is effectively ensured through the cooperation of the upper flange plate 20 and the lower flange plate 21 and the bolts, the overall installation and disassembly are convenient and simple, operation is convenient, and subsequent disassembly and maintenance are convenient.

[0076] The application has the advantages that the structure design is reasonable, the practicability is strong, the measuring rod 3 can be protected through the design of the protective sleeve 2, the collision of the measuring rod 3 is avoided, the opening groove 4 is arranged on the protective sleeve 2, the protective net 5 is installed in the opening groove 4, the protective net 5 can not only play a protection and shielding role, but also will not affect the circulation of fluid in the equipment, the measurement accuracy of the liquid level sensor is improved, the limiting ring plate 6 is sleeved on the protective sleeve 2, the indirect connection and fixation between the two protective nets 5 are realized through the limiting ring plate 6, and the limiting ring plate 6 and the protective net 5 are matched and restrained with each other, so that the installation stability of the protective net 5 and the limiting ring plate 6 on the protective sleeve 2 is ensured.

[0077] The application adopts the limiting device 23 to assist in supporting and positioning in the cutting of the opening groove 4 on the protective sleeve 2, the pipeline is supported and stabilized through the clamping sleeve 26, the middle supporting seat 32, the end supporting seat 29 and the two limiting assemblies 37, the installation and placement stability and reliability of the sleeve on the limiting device 23 are effectively ensured, the actual cutting operation is facilitated, the cutting line of the opening groove 4 is accurately positioned and adjusted through the two limiting assemblies 37, so that the opening groove 4 is just rotated to the directly above, the actual cutting operation is facilitated, the actual cutting efficiency is improved, the two limiting assemblies 37 can further play a guiding and limiting operation in the cutting process, the accuracy of the cutting length and angle is ensured, the final cutting quality is improved, after the cutting of one opening groove 4 is completed, the sleeve is rotated by 180° as a whole, the accurate positioning of the other opening groove 4 is realized, and then the cutting operation is performed, so that the overall cutting efficiency and cutting safety are improved.

[0078] The above is only a specific embodiment of the application, but the technical features of the application are not limited to this. Any simple change, equivalent replacement or modification made on the basis of the application to solve basically the same technical problem and realize basically the same technical effect is covered in the protection scope of the application.

Claims

1. A float type liquid level sensor for a domestic air conditioner, comprising a sensor body, characterized in that: Also include protective cover, the protective cover is wrapped outside the measuring rod of the sensor body, the protective cover is connected with the sensor body flange, two open slots are symmetrically arranged on the protective cover, the protective cover is matched with the protective net, the protective cover is sleeved with a limiting ring plate, the limiting ring plate is located at the upper and lower ends of the protective net, and the limiting ring plate is fixedly connected with the protective net; both ends of the protective net are provided with an extension expansion plate, both sides of the extension expansion plate are provided with a blocking convex part, the blocking convex part is limited on the outer wall of the protective cover, the extension expansion plate is provided with a through hole, the limiting ring plate is provided with a limiting column, the limiting column is matched with the through hole, the limiting column penetrates through the corresponding extension expansion plate through the through hole, and the extending end of the limiting column is provided with a fastening nut; the two limiting ring plates are connected through a reinforcing rod, both extending ends of the reinforcing rod are provided with a clamping nut; both extending ends of the reinforcing rod are provided with a fixing piece, and the fixing piece and the reinforcing rod are detachably installed.

2. The float type liquid level sensor for a home air conditioner according to claim 1, wherein: The fixing piece comprises a supporting seat, a connecting rod and a mounting flange, the connecting rod is fixedly connected between the supporting seat and the mounting flange, the supporting seat is provided with a connecting through hole, the connecting through hole is matched with the reinforcing rod, the supporting seat is sleeved on the reinforcing rod through the connecting through hole, and the clamping nut is limited on the corresponding supporting seat.

3. The float type liquid level sensor for a home air conditioner according to claim 2, characterized in that: The top end of the protective cover is provided with a lower flange plate, the sensor body is provided with an upper flange plate, and the lower flange plate and the upper flange plate are bolted and fixedly connected.

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