Water dispenser based on pipeline type photoelectric liquid level sensor

Abstract

The utility model relates to the technical field of water dispenser sensors, in particular to a water dispenser based on a pipeline type photoelectric liquid level sensor, which comprises a water dispenser shell and a liquid level sensor main body, a water outlet pipe is arranged at the right end of the water dispenser shell, and an access cover is arranged on the front side of the water dispenser shell. The end of the liquid level sensor body is inserted along the positioning block positioning groove of the fixing plate, the end of the liquid level sensor body extrudes the inclined face of the clamping block in the positioning groove during insertion, so that a movable plate connected with the clamping block slides in the mounting cavity and extrudes a second spring, and when the liquid level sensor body is inserted into the positioning groove to the bottom, the second spring is pressed. At the moment, the clamping-in end of the clamping block corresponds to the clamping groove of the liquid level sensor body in position, a second spring pushes the clamping block on the moving plate to stretch into the positioning groove through resetting and is clamped in the clamping groove of the liquid level sensor body, and therefore the liquid level sensor body can be conveniently and rapidly clamped and installed.

Description

TECHNICAL FIELD

[0001] The utility model relates to drinking water machine sensor technical field, especially is drinking water machine based on pipeline type photoelectric liquid level sensor. BACKGROUND

[0002] Drinking water machine is a kind of household appliance commonly seen in our daily life, it is convenient, practical characteristics, become indispensable drinking water equipment in office, family, school and other places.Drinking water machine can effectively remove impurities, peculiar smell etc.in tap water through internal filtration system, provide clean, sanitary drinking water.It is usually equipped with cold and hot water function, user can select suitable water temperature according to own demand, whether it is a cup of cool ice water in hot summer, or a pot of warm boiled water in cold winter, can easily satisfy.In addition, modern drinking water machine design is more intelligent, such as with LED display screen, automatic power-off protection etc., not only simple operation, and safe and reliable.Drinking water machine also pays attention to energy saving and environmental protection, uses energy-saving technology to reduce energy consumption, meets the concept of modern green life.In short, drinking water machine provides strong guarantee for people's drinking health with its excellent performance and humanized design.

[0003] At present, the internal purification type drinking water machine is usually provided with pure water tank and raw water tank, and in order to facilitate the detection of the liquid level of the water tank, liquid level sensors are usually installed at the lowest water level point and the highest water level point of the water tank, and the traditional pipeline type photoelectric liquid level sensor in the drinking water machine mainly has two fixing structures, one is fixed by a strap, which needs to rely on external connection, if the strap is cut off when disassembling, a new strap needs to be purchased and replaced for reinstallation and fixation, and the sensing position is also prone to change, the second is a liquid level sensor with mounting ears, which needs to be installed and fixed by special tools and a large number of screw fasteners, when disassembling, in addition to relying on external tools, sometimes the fastening screws are rusted, oxidized and slipped, which affects the disassembly efficiency of the sensor of the drinking water machine. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing drinking water machine based on pipeline type photoelectric liquid level sensor to solve the problems in the above background technology.

[0005] In order to achieve the above object, the utility model provides a drinking water machine based on pipeline type photoelectric liquid level sensor, include, including drinking water machine shell and liquid level sensor main part, the right side of drinking water machine shell is equipped with water outlet pipe, the front of drinking water machine shell is equipped with the access cover, the inside of the front of drinking water machine shell is equipped with water tank, the outside of water tank is fixedly installed with water level pipe, the outside of water tank is fixedly installed with fixed plate, the outside of fixed plate is equipped with the positioning block symmetrically, the inside of positioning block is equipped with fixed mechanism, the outside of liquid level sensor main part is equipped with the clamping groove symmetrically, the positioning block is connected through fixed mechanism and clamping groove, the outside of fixed mechanism is equipped with positioning mechanism, the outside of water tank is equipped with arrangement mechanism,

[0006] The fixed mechanism includes an installation cavity and a positioning groove, the positioning groove is symmetrically arranged on the front of the positioning block, the end of the liquid level sensor main body is inserted into the inside of the positioning groove, the installation cavity is arranged on the inside of the positioning block, the inside of the installation cavity is slidably connected with a moving plate, one side of the moving plate is fixedly connected with a clamping block, the clamping end of the clamping block is slidably inserted into the inside of the positioning groove, the clamping end of the clamping block is clamped with the clamping groove of the liquid level sensor main body, the side of the moving plate away from the clamping block is fixedly connected with a rectangular rod, one end of the rectangular rod away from the moving plate is slidably penetrated through the cavity wall of the installation cavity and fixedly connected with an L-shaped block, the inside of the installation cavity is fixedly connected with a second spring, one end of the rectangular rod is movably penetrated through the middle part of the second spring, and the positioning mechanism is arranged on the outside of the rectangular rod.

[0007] The positioning mechanism includes a rectangular groove and a limiting groove, the rectangular groove is arranged on one side of the rectangular rod, the limiting groove is arranged on the inside of the rectangular groove, the outside of the positioning block is fixedly connected with an installation shell, the inside of the installation shell is slidably connected with a movable plate, one side of the movable plate is fixedly connected with a clamping rod, the clamping end of the clamping rod is abutted on the inside of the rectangular groove, the side of the movable plate away from the clamping rod is fixedly connected with a pull rod, the outside of the pull rod is sleeved with a first spring, and one end of the pull rod away from the first spring is slidably penetrated through the shell wall of the installation shell and fixedly connected with a same linkage plate.

[0008] The arrangement mechanism includes a connecting plate, double-sided adhesive layers are bonded on one side of the connecting plate, the connecting plate is bonded on the outside of the water tank through the double-sided adhesive layers, wire clamps are fixedly connected on the side of the connecting plate away from the double-sided adhesive layers, and clamping grooves are arranged on the outside of the wire clamps.

[0009] Further, the inside of the installation shell is symmetrically provided with a second sliding groove, the movable plate and the second sliding groove of the installation shell are slidably connected, and the clamping end of the clamping rod is in a spherical shape.

[0010] Further, the side of the linkage plate away from the pull rod is fixedly connected with a pull block, a pull hole is arranged on the inside of the pull block, and the pull block is arranged on the middle part of the linkage plate.

[0011] Further, the inner side of the installation cavity is symmetrically provided with a first sliding groove, and the moving plate and the first sliding groove of the installation cavity are in sliding connection.

[0012] Further, the inner wall of the installation cavity away from the positioning groove is provided with a sliding hole, one end of the rectangular rod is slidably penetrated through the sliding hole, and the clamping end of the clamping block is inclined towards one side of the positioning groove.

[0013] Further, the inner side of the fixing plate is symmetrically provided with a fixing hole, and the fixing plate is fixedly installed in the water tank through the fixing hole and screws.

[0014] Further, the maintenance cover comprises a cover plate and a cover groove, the cover groove is provided on the front face of the water dispenser shell, the inner side of the cover groove is inlaid with a magnet, one end of the cover plate is rotationally connected to the inner side of the cover groove, the other end of the cover plate is magnetically connected to the magnet of the cover groove, a pull button is threadedly installed on the front face of the cover plate, and a ventilation hole is formed in the inner side of the cover plate.

[0015] Further, the upper end of the water dispenser shell is fixedly provided with a handle, and a waste water box is inserted into the side of the water dispenser shell close to the water outlet pipe.

[0016] Compared with the prior art, the water dispenser has the advantages that:

[0017] Firstly, in the utility model, the liquid level sensor main body end is inserted along the positioning block positioning groove of the fixing plate, the liquid level sensor main body end extrudes the inclined surface of the clamping block in the positioning groove during the insertion, the moving plate connected with the clamping block is slid in the installation cavity and extrudes the second spring, when the liquid level sensor main body is inserted into the positioning groove to the bottom, the clamping end of the clamping block corresponds to the clamping groove of the liquid level sensor main body at this time, the second spring pushes the clamping block on the moving plate to extend into the positioning groove and is clamped in the clamping groove of the liquid level sensor main body at this time, so that the liquid level sensor main body can be quickly clamped and installed.

[0018] Secondly, in the utility model, the L-shaped block away from the positioning groove of the positioning block is pulled at the same time, so that the rectangular rod connected with the L-shaped block is slid in the installation cavity of the positioning block, and the clamping end of the clamping rod is slid in the rectangular groove of the rectangular rod at the same time, since one end of the clamping rod is slid in the installation shell through the connecting movable plate, and the first spring is added at the pull rod on the other side of the movable plate, the clamping rod is always resisted in the rectangular groove of the rectangular rod, until the clamping end of the clamping rod corresponds to the limiting groove in the rectangular groove, the clamping rod can be inserted into the limiting groove under the action of the first spring, so that the rectangular rod can be limited, since the rectangular rod is limited, the clamping block connected with the moving plate is separated from the clamping groove of the liquid level sensor main body at this time, so that the liquid level sensor main body can be directly taken off from the positioning block, thereby the liquid level sensor main body can be conveniently disassembled. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic view of the utility model;

[0020] Figure 2 It is the side view in the utility model;

[0021] Figure 3 It is the internal structure schematic view in the utility model;

[0022] Figure 4 It is the in the utility model Figure 3 The enlarged view of A in the middle;

[0023] Figure 5 It is the liquid level sensor main body and fixed mechanism connection schematic view in the utility model;

[0024] Figure 6 It is the positioning mechanism structure schematic view in the utility model;

[0025] Figure 7 It is the installation shell internal structure schematic view in the utility model;

[0026] Figure 8 It is the in the utility model Figure 3 The enlarged view of B in the middle.

[0027] In the drawing: 1, water dispenser shell; 2, waste water box; 3, water outlet pipe; 4, maintenance cover; 401, cover plate; 402, pull button; 403, air vent; 404, magnet; 405, cover groove; 5, handle; 6, water tank; 7, water level pipe; 8, liquid level sensor main body; 9, fixed plate; 10, fixed hole; 11, positioning block; 12, positioning mechanism; 121, rectangular groove; 122, limit groove; 123, installation shell; 124, linkage plate; 125, movable plate; 126, clamping rod; 127, first spring; 128, pull rod; 13, fixed mechanism; 131, installation cavity; 132, positioning groove; 133, clamping block; 134, rectangular rod; 135, L-shaped block; 136, second spring; 137, moving plate; 14, sliding hole; 15, first sliding groove; 16, second sliding groove; 17, pull block; 18, pull hole; 19, arrangement mechanism; 191, wire clamp; 192, connecting plate; 193, double-sided adhesive layer; 194, clamping groove. DETAILED DESCRIPTION

[0028] EMBODIMENT

[0029] Please refer to Figures 1-8The utility model discloses an embodiment, based on the drinking water machine of pipeline type photoelectric liquid level sensor, including drinking water machine shell 1 and liquid level sensor main part 8, the right -hand member of drinking water machine shell 1 is equipped with the water pipe 3, and the front of drinking water machine shell 1 is equipped with the maintenance cover 4, and the inside of the front of drinking water machine shell 1 is equipped with the water tank 6, and the outside fixed mounting of water tank 6 has the water level pipe 7, and the outside fixed mounting of water tank 6 has the fixed plate 9, and the outside symmetry of fixed plate 9 is equipped with the locating block 11, and the inside of locating block 11 is equipped with fixed mechanism 13, and the outside symmetry of liquid level sensor main part 8 is equipped with the clamping groove, and locating block 11 is connected through fixed mechanism 13 and clamping groove, and the outside of fixed mechanism 13 is equipped with the positioning mechanism 12, and the outside of water tank 6 is equipped with the arrangement mechanism 19, and the liquid level sensor main part 8 can refer to the pipeline liquid level switch sensor of model EE-SPX613 series specifically, and it is U-shaped and the inside recess is the inductive detection part for detecting the pipeline liquid level,

[0030] Fixed mechanism 13 includes installation cavity 131 and locating groove 132, and locating groove 132 is symmetrically set up in the front of locating block 11, and the end of liquid level sensor main part 8 is inserted in the inside of locating groove 132, and installation cavity 131 is set up in the inside of locating block 11, and the inside of installation cavity 131 is slidably connected with moving plate 137, and one side of moving plate 137 is fixedly installed with clamping block 133, and the clamping end of clamping block 133 slidably extends into the inside of locating groove 132, and the clamping end of clamping block 133 is clamped with the clamping groove of liquid level sensor main part 8, and the side of moving plate 137 away from clamping block 133 is fixedly installed with rectangular rod 134, and one end of rectangular rod 134 away from moving plate 137 slidably penetrates the cavity wall of installation cavity 131 and is fixedly installed with L-shaped block 135, and the inside of installation cavity 131 is fixedly installed with second spring 136, and one end of rectangular rod 134 movably penetrates the middle part of second spring 136, and positioning mechanism 12 is set up outside rectangular rod 134, when needing to fix liquid level sensor main part 8, first, the end of liquid level sensor main part 8 is inserted along the locating groove 132 of the locating block 11 of fixed plate 9, when inserting, the end of liquid level sensor main part 8 extrudes the inclined plane of clamping block 133 in locating groove 132, so that the moving plate 137 connected with clamping block 133 slides in installation cavity 131 and extrudes second spring 136, when liquid level sensor main part 8 is inserted to the bottom in locating groove 132, at this time, the clamping end of clamping block 133 corresponds with the position of the clamping groove of liquid level sensor main part 8, at this time, second spring 136 pushes clamping block 133 on moving plate 137 and extends to locating groove 132 through reset, and is clamped in the clamping groove of liquid level sensor main part 8, so that the quick clamping installation of liquid level sensor main part 8 can be facilitated;

[0031] The positioning mechanism 12 comprises a rectangular slot 121 and a limiting slot 122, the rectangular slot 121 is arranged on one side of the rectangular rod 134, the limiting slot 122 is arranged on the inner side of the rectangular slot 121, the outer side of the positioning block 11 is fixedly installed with a mounting shell 123, the inner side of the mounting shell 123 is slidably connected with a movable plate 125, one side of the movable plate 125 is fixedly installed with a clamping rod 126, the clamping end of the clamping rod 126 abuts on the inner side of the rectangular slot 121, the side, away from the clamping rod 126, of the movable plate 125 is fixedly installed with a pull rod 128, the outer side of the pull rod 128 is sleeved with a first spring 127, one end of the pull rod 128, away from the first spring 127, is slidably penetrated through the shell wall of the mounting shell 123 and is fixedly installed with the same linkage plate 124, when it is needed to disassemble the liquid level sensor main body 8 from the water tank 6 of the water dispenser shell 1, first, the L-shaped block 135 on the side, away from the positioning slot 132, of the positioning block 11 is pulled at the same time, so that the rectangular rod 134 connected with the L-shaped block 135 slides in the installation cavity 131 of the positioning block 11, at the same time, the clamping end of the clamping rod 126 slides at the rectangular slot 121 of the rectangular rod 134, because one end of the clamping rod 126 slides in the mounting shell 123 through the connecting movable plate 125, and the first spring 127 is added at the pull rod 128 on the other side of the movable plate 125, so that the clamping rod 126 abuts in the rectangular slot 121 of the rectangular rod 134 all the time, until the clamping end of the clamping rod 126 corresponds to the limiting slot 122 in the rectangular slot 121, under the action of the first spring 127, the clamping rod 126 can be inserted into the limiting slot 122, that is, the rectangular rod 134 can be limited, because the rectangular rod 134 is limited, at this time, the clamping block 133 connected with the moving plate 137 is separated from the clamping slot of the liquid level sensor main body 8, at this time, the liquid level sensor main body 8 can be directly taken off from the positioning block 11, so that the liquid level sensor main body 8 can be conveniently disassembled; when the liquid level sensor main body 8 is taken off, the linkage plate 124 is pulled, so that the linkage plate 124 drives the two pull rods 128 to move, and the pull rod 128 drives the clamping rod 126 connected with the movable plate 125 to retract to the side of the mounting shell 123, at this time, the clamping rod 126 is separated from the limiting slot 122 of the rectangular rod 134, and then under the action of the second spring 136, the clamping block 133 is reinserted into the positioning slot 132 of the positioning block 11, which is convenient for subsequent replacement and installation;

[0032] The arrangement mechanism 19 comprises a connecting plate 192, one side of the connecting plate 192 is bonded with a double-sided adhesive layer 193, the connecting plate 192 is bonded to the outer side of the water tank 6 through the double-sided adhesive layer 193, and the side away from the double-sided adhesive layer 193 of the connecting plate 192 is fixedly connected with a wire clamp 191, and the outer side of the wire clamp 191 is provided with a clamping groove 194. Through the double-sided adhesive layer 193 on the connecting plate 192, the connecting plate 192 can be conveniently fixed on the water tank 6, and through the wire clamp 191 with the clamping groove 194 on the connecting plate 192, the connecting line of the liquid level sensor can be conveniently arranged on the water tank 6 of the water dispenser shell 1; the connecting plate 192 can be provided with multiple connecting points according to the specifications and models of the water dispenser shell 1.

[0033] Please refer to Figure 7 The inner side of the mounting shell 123 is symmetrically provided with a second sliding groove 16, the movable plate 125 and the second sliding groove 16 of the mounting shell 123 are in sliding connection, the clamping end of the clamping rod 126 is spherical, and the second sliding groove 16 is arranged on the inner side of the mounting shell 123. The movable plate 125 can stably slide in the inner side of the mounting shell 123, and the clamping end of the clamping rod 126 is designed to be spherical, so that the resistance during relative movement in the rectangular groove 121 is reduced.

[0034] Please refer to Figure 7 The side away from the pull rod 128 of the linkage plate 124 is fixedly provided with a pull block 17, the inner side of the pull block 17 is provided with a pull hole 18, and the pull block 17 is arranged at the middle part of the linkage plate 124. By arranging the pull block 17 with the pull hole 18 on the side away from the pull rod 128 of the linkage plate 124, the linkage plate 124 can be conveniently operated to move by using the pull block 17.

[0035] Please refer to Figure 5 The inner side of the mounting cavity 131 is symmetrically provided with a first sliding groove 15, and the movable plate 137 and the first sliding groove 15 of the mounting cavity 131 are in sliding connection. By symmetrically arranging the first sliding groove 15 on the inner side of the mounting cavity 131, the movable plate 137 can stably slide in the mounting cavity 131.

[0036] Please refer to Figure 5 The inner wall of the mounting cavity 131 away from the positioning groove 132 is provided with a sliding hole 14, one end of the rectangular rod 134 slides through the sliding hole 14, and the clamping end of the clamping block 133 towards the side of the slot of the positioning groove 132 is inclined. By arranging the sliding hole 14 on the inner wall of the mounting cavity 131, one end of the rectangular rod 134 slides through the inner wall of the mounting cavity 131, and the clamping end of the clamping block 133 towards the side of the slot of the positioning groove 132 is designed to be inclined. The clamping block 133 can be conveniently contacted and installed with the liquid level sensor main body 8.

[0037] Please refer to Figure 4The inner side of the fixing plate 9 is symmetrically provided with a fixing hole 10, and the fixing plate 9 is fixedly installed through the fixing hole 10 and the water tank 6 by screws. The fixing hole 10 is arranged on the inner side of the fixing plate 9, so that the fixing plate 9 can be conveniently installed on the water tank 6 by screws. The fixing plate 9 is generally installed on the water tank 6 of the water dispenser shell 1 when the product is delivered, and does not need to be disassembled subsequently.

[0038] Please refer to Figure 2 and Figure 3 The maintenance cover 4 comprises a cover plate 401 and a cover groove 405. The cover groove 405 is arranged on the front face of the water dispenser shell 1. The inner side of the cover groove 405 is inlaid with a magnet 404. One end of the cover plate 401 is rotatably connected to the inner side of the cover groove 405. The other end of the cover plate 401 is magnetically connected to the magnet 404 of the cover groove 405. A pull knob 402 is threadedly installed on the front face of the cover plate 401. Ventilation holes 403 are arranged on the inner side of the cover plate 401. One end of the maintenance cover 4 is rotatably connected to the cover groove 405 of the water dispenser shell 1. The other side is attracted to the magnet 404 in the cover groove 405, so that the maintenance cover 4 can be conveniently opened and closed. Meanwhile, the internal structure of the water dispenser shell 1, including the liquid level sensor main body 8, can be conveniently maintained and used subsequently. The other side door cover of the water dispenser shell 1, which is away from the maintenance cover 4, can also be opened. However, it is fixed by screws, and the maintenance cover 4 is generally opened during maintenance.

[0039] Please refer to Figure 1 A handle 5 is fixedly installed at the upper end of the water dispenser shell 1. A waste water box 2 is inserted on one side of the water dispenser shell 1 close to the water outlet pipe 3. The handle 5 added to the water dispenser shell 1 meets the daily carrying and transferring requirements of the water dispenser. Meanwhile, the waste water box 2 on the water dispenser shell 1 can conveniently collect the water dripping from the water dispenser.

[0040] The working principle of the utility model is as follows: during use, when the liquid level sensor main body 8 needs to be fixed, firstly, the end of the liquid level sensor main body 8 is inserted into the positioning groove 132 of the positioning block 11 of the fixing plate 9. During insertion, the end of the liquid level sensor main body 8 extrudes the inclined surface of the clamping block 133 in the positioning groove 132, so that the movable plate 137 connected to the clamping block 133 slides in the installation cavity 131 and extrudes the second spring 136. When the liquid level sensor main body 8 is inserted into the positioning groove 132 to the bottom, the clamping end of the clamping block 133 corresponds to the clamping groove of the liquid level sensor main body 8 at this time. At this time, the second spring 136 extends into the positioning groove 132 by pushing the clamping block 133 on the movable plate 137 to be clamped in the clamping groove of the liquid level sensor main body 8. Subsequently, the line part of the liquid level sensor main body 8 is fixed by the wire clamp 191 on the connecting plate 192 and then connected, so that the liquid level sensor main body 8 can be installed on the water tank 6 in the water dispenser shell 1, and the water level of the water level pipe 7 on the water tank 6 can be monitored.

[0041] When the liquid level sensor body 8 needs to be removed from the water tank 6 of the water dispenser shell 1, first open the access door from the water dispenser shell 1, then pull the L-shaped block 135 away from the positioning groove 132 side through the positioning block 11, at the same time, make the rectangular rod 134 connected with the L-shaped block 135 slide in the installation cavity 131 of the positioning block 11, at the same time, the clamping end of the clamping rod 126 slides in the rectangular groove 121 of the rectangular rod 134, since one end of the clamping rod 126 slides in the installation shell 123 through the connecting movable plate 125, and the first spring 127 is added at the pull rod 128 on the other side of the movable plate 125, so that the clamping rod 126 is always clamped in the rectangular groove 121 of the rectangular rod 134, until the clamping end of the clamping rod 126 corresponds to the limiting groove 122 in the rectangular groove 121, under the action of the first spring 127, the clamping rod 126 can be inserted into the limiting groove 122, that is, the rectangular rod 134 can be limited, since the rectangular rod 134 is limited, at this time, the clamping block 133 connected with the moving plate 137 of the rectangular rod 134 is separated from the clamping groove of the liquid level sensor body 8, at this time, the liquid level sensor body 8 can be directly taken off from the positioning block 11.

Claims

1. A water dispenser based on a tubular photoelectric liquid level sensor, characterized in that, The device includes a water dispenser housing and a liquid level sensor body. The water dispenser housing has a water outlet pipe at its right end and an inspection cover on its front. A water tank is located on the inner side of the front of the water dispenser housing. A water level pipe is fixedly installed on the outer side of the water tank. A fixing plate is fixedly installed on the outer side of the water tank. Positioning blocks are symmetrically arranged on the outer side of the fixing plate. A fixing mechanism is located on the inner side of the positioning blocks. Slots are symmetrically opened on the outer side of the liquid level sensor body. The positioning blocks are engaged with the slots via the fixing mechanism. A positioning mechanism is located on the outer side of the fixing mechanism. An arrangement mechanism is located on the outer side of the water tank. The fixing mechanism includes a mounting cavity and a positioning groove. The positioning groove is symmetrically opened on the front of the positioning block. The end of the liquid level sensor body is inserted into the inner side of the positioning groove. The mounting cavity is opened inside the positioning block. A moving plate is slidably connected to the inner side of the mounting cavity. A locking block is fixedly installed on one side of the moving plate. The locking end of the locking block slides into the inner side of the positioning groove and engages with the locking groove of the liquid level sensor body. A rectangular rod is fixedly installed on the side of the moving plate away from the locking block. An L-shaped block is fixedly installed at the end of the rectangular rod away from the moving plate, which slides through the cavity wall of the mounting cavity. A second spring is fixedly installed inside the mounting cavity. One end of the rectangular rod moves through the middle of the second spring. The positioning mechanism is located on the outer side of the rectangular rod.

2. The pipe optical liquid level sensor based water dispenser as claimed in claim 1, wherein, The positioning mechanism includes a rectangular groove and a limiting groove. The rectangular groove is formed on one side of the rectangular rod, and the limiting groove is formed on the inner side of the rectangular groove. A mounting shell is fixedly installed on the outer side of the positioning block. A movable plate is slidably connected to the inner side of the mounting shell. A locking rod is fixedly installed on one side of the movable plate. The locking end of the locking rod abuts against the inner side of the rectangular groove. A pull rod is fixedly installed on the side of the movable plate away from the locking rod. A first spring is sleeved on the outer side of the pull rod. The end of the pull rod away from the first spring slides through the shell wall of the mounting shell and is fixedly installed with the same linkage plate.

3. The pipe optical liquid level sensor based water dispenser as claimed in claim 2, wherein, The inner side of the mounting shell is symmetrically provided with a second sliding groove, the movable plate and the second sliding groove of the mounting shell are slidably connected, and the snap-in end of the locking rod is spherical.

4. The pipe optical liquid level sensor based water dispenser as claimed in claim 2, wherein, A pull block is fixedly installed on the side of the linkage plate away from the pull rod. A pull hole is opened on the inner side of the pull block, and the pull block is located in the middle of the linkage plate.

5. The pipe optical liquid level sensor based water dispenser as claimed in claim 1, wherein, The inner side of the mounting cavity is symmetrically provided with first sliding grooves, and the moving plate and the first sliding groove of the mounting cavity are slidably connected.

6. The pipe optical liquid level sensor based water dispenser as claimed in claim 1, wherein, A sliding hole is provided on the inner wall side of the mounting cavity away from the positioning groove. One end of the rectangular rod slides through the sliding hole, and the snap-in end of the locking block is inclined on the side facing the opening of the positioning groove.

7. The pipe optical liquid level sensor based water dispenser as claimed in claim 1 wherein, The fixing plate has symmetrical fixing holes on its inner side, and the fixing plate is fixed to the water tank by screws passing through the fixing holes.

8. The pipe optical liquid level sensor based water dispenser as claimed in claim 1, wherein, The arrangement mechanism includes a connecting plate, one side of which is bonded with a double-sided adhesive layer. The connecting plate is bonded to the outside of the water tank by the double-sided adhesive layer. A wire clamp is fixedly connected to the side of the connecting plate away from the double-sided adhesive layer. A clamping groove is provided on the outer side of the wire clamp.

9. The pipe optical liquid level sensor based water dispenser as claimed in claim 1, wherein, The maintenance cover comprises a cover plate and a cover groove, the cover groove is arranged on the front of the water dispenser shell, a magnet is embedded on the inner side of the cover groove, one end of the cover plate is rotatably connected to the inner side of the cover groove, the other end of the cover plate is magnetically connected to the magnet of the cover groove, a pull knob is threadedly installed on the front of the cover plate, and a ventilation hole is arranged on the inner side of the cover plate.

10. The pipe optical liquid level sensor based water dispenser as claimed in claim 1, wherein, The upper end of the water dispenser shell is fixedly provided with a handle, and a wastewater box is inserted into the side of the water dispenser shell close to the water outlet pipe.

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