Water quality sampler for waterworks

Abstract

The present application relates to water plant technical field, specifically for a kind of water quality sampler for water plant, comprising: sampling base plate, upper movable plate, rotating handle, movable block, piston sleeve, piston head, sampling pull rod, linkage sleeve and sampling cylinder;Beneficial effect is: by multiple sets of adjusting hole cooperation to carry out quantitative extraction, vice versa can quantitatively export sampling liquid, when guide column moves to the quantitative corresponding adjusting hole before, adjusting pull plate is pulled outward, so that adjusting pull plate is separated from adjusting limit groove, then rotating adjusting pull plate, so that adjusting pull plate is away from adjusting plate, at this time, loosening adjusting pull plate, then baffle groove holds limit baffle and drives limit rod to move towards guide slot, then when guide column moves to the quantitative corresponding adjusting hole, baffle groove holds limit baffle and drives limit rod to enter adjusting hole inside, so that linkage sleeve and sampling pull rod are limited and fixed, prevent sampling error, facilitate accurate quantitative sampling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water plants, in particular to a water quality sampler for water plants. BACKGROUND

[0002] A water supply treatment plant is a plant that treats raw water to meet water quality requirements, and a water supply treatment plant that supplies city water is sometimes called a waterworks or simply a water plant. When a water plant processes water quality in different stages, a sampling device is needed to sample and detect the water quality, so as to check whether the water quality of the current stage meets the standard.

[0003] The existing sampling device usually uses a water storage device to directly store the water to be tested, and then detects it, and subsequently needs to use a beaker or other measuring device to quantitatively measure the water to be tested. One sampler usually only has one sampling cylinder, and can only sample one kind of water. When multiple groups of water are sampled, the inner wall of the sampling cylinder will be left with other water, causing detection errors. SUMMARY

[0004] The purpose of the present application is to provide a water quality sampler for water plants to solve the problem of detection errors when sampling multiple groups of water.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A water quality sampler for water plants comprises:

[0007] A sampling base plate;

[0008] An upper movable plate rotatably arranged above the sampling base plate;

[0009] A rotating handle arranged at the top end of the upper movable plate;

[0010] A movable block arranged on the side of the upper movable plate away from the rotating handle;

[0011] A piston sleeve arranged on the movable block and in space communication with the bottom of the upper movable plate;

[0012] A piston head arranged inside the piston sleeve;

[0013] A sampling pull rod having one end connected to the top end of the piston sleeve and the other end located outside the piston sleeve;

[0014] A linkage sleeve sleeved outside the piston sleeve, and one end of the sampling pull rod passes through the linkage sleeve;

[0015] A plurality of sampling cylinders arranged at the bottom end of the sampling base plate, the top ends of the sampling cylinders being in communication with the top of the sampling base plate, and the plurality of sampling cylinders being distributed on the movement track of the piston sleeve.

[0016] Preferably, the linkage sleeve is provided with a first rotating groove, the sampling pull rod is provided with a first rotating block at the position corresponding to the first rotating groove, and the first rotating block is located in the first rotating groove; the bottom end of the upper movable plate is provided with an annular second rotating groove, the sampling base is provided with an annular second rotating block at the position corresponding to the second rotating groove, and the second rotating block is located in the second rotating groove.

[0017] Preferably, the piston sleeve is provided with a helical guide groove, the linkage sleeve is provided with a guide column at the position corresponding to the guide groove, the guide column comprises a first guide column and a second guide column, and one end of the first guide column and one end of the second guide column are respectively and slidingly arranged in the two guide grooves.

[0018] Preferably, the guide groove is provided with a vertically distributed adjusting hole, the second guide column is provided with a supporting groove at the position corresponding to the adjusting hole, the supporting groove is slidingly provided with an adjusting block, the adjusting block is in a circular truncated cone structure, a first elastic member is arranged between the adjusting block and the supporting groove, the first elastic member comprises a supporting spring, one end of the supporting spring is connected with the adjusting block, the other end of the supporting spring is connected with the supporting groove, and the supporting spring is always in a compressed state.

[0019] Preferably, the first guide column is provided with a baffle groove, the first guide column is provided with a limiting rod at the position corresponding to the adjusting hole, the limiting rod passes through the baffle groove and protrudes out of the first guide column, the limiting rod is provided with a limiting baffle at the position corresponding to the baffle groove, a second elastic member is arranged between the limiting baffle and the baffle groove, the second elastic member comprises a limiting spring, one end of the limiting spring is connected with the baffle groove, the other end of the limiting spring is overlapped with the limiting baffle, and the limiting spring is always in a compressed state for pushing the limiting rod into the adjusting hole.

[0020] Preferably, the limiting rod is provided with an adjusting pull plate at the end away from the guide groove, an adjusting plate is arranged above the adjusting pull plate, the adjusting plate is arranged outside the linkage sleeve, and the side of the adjusting plate away from the linkage sleeve is provided with an adjusting limiting groove for limiting the adjusting pull plate.

[0021] Preferably, the sampling base is provided with a through hole, the through hole is arranged on the sampling base in a circumferential staggered manner with the sampling cylinder, the sampling cylinder is provided with a sealing strip at the top end, the top end of the sampling cylinder is provided with a second supporting groove located outside the sealing strip, the second supporting groove is slidingly provided with a connecting plate, a third elastic member is arranged between the connecting plate and the second supporting groove, the third elastic member comprises a supporting spring, one end of the supporting spring is connected with the connecting plate, the other end of the supporting spring is connected with the second supporting groove, and the supporting spring is always in a compressed state; the movable block is provided with a connecting groove at the position corresponding to the connecting plate, and the connecting groove is clamped with the connecting plate.

[0022] Preferably, the second holding groove is provided with a connecting rod groove on one side, the connecting rod groove penetrates the sampling cylinder, the connecting plate is provided with a connecting rod at the position corresponding to the connecting rod groove, the connecting rod is in the shape of L, and one end of the connecting rod penetrates the sampling bottom plate.

[0023] Preferably, the sampling cylinder is provided with a movable groove, the movable groove penetrates the sampling cylinder and the second holding groove, and the movable groove is above the connecting rod groove; the movable groove is slidably provided with a movable clamping block, the length of the movable clamping block is greater than the length of the movable groove, the sampling bottom plate is provided with a clamping groove at the position corresponding to the movable clamping block, and the clamping groove is clamped with the movable clamping block.

[0024] Preferably, the movable clamping block is provided with a movable inclined surface near the lower end of the side of the connecting plate, the movable groove is provided with a movable limiting groove at the upper end and the lower end, the movable clamping block is provided with a movable limiting block at the position corresponding to the movable limiting groove, a fourth elastic member is arranged between the movable limiting block and the movable limiting groove, the fourth elastic member comprises a movable spring, one end of the movable spring is connected with the movable limiting block, the other end of the movable spring is connected with the movable limiting groove, the movable spring is always in a compressed state, the elastic force of the movable spring is smaller than the elastic force of the holding spring, and the movable spring is used for pushing the movable clamping block to the direction of the second holding groove.

[0025] Compared with the prior art, the present application has the following advantages:

[0026] The sampling pull rod drives the piston head to move inside the piston sleeve, the sampling pull rod is rotationally connected with the connecting sleeve at this time, the sampling pull rod drives the connecting sleeve to move, the connecting sleeve drives the guide column to move inside the guide groove, and when the adjusting block is aligned with the adjusting hole, the holding spring holds the adjusting block to enter inside the adjusting hole, a "click" sound is heard at this time, quantitative extraction is realized through the cooperation of multiple adjusting holes, and vice versa, the sampling liquid can be quantitatively discharged.

[0027] The upper movable plate is rotated above the sampling bottom plate by rotating the handle, so that a group of sampling pull rods are aligned with multiple sampling cylinders, the through holes arranged between adjacent two groups of sampling cylinders facilitate the resetting of the sampling pull rod and the piston head through the through holes after the extraction of one group of sampling cylinders is completed, the next group of sampling cylinders can be extracted, and the multiple sampling cylinders arranged at the bottom end of the sampling bottom plate can realize the sampling and testing of water quality in different regions.

[0028] By pressing the connecting rod, the connecting plate moves downward, allowing it to enter the second top-holding groove. This facilitates the rotation of the movable block above the sampling cylinder. Pressing the connecting rod further causes the connecting plate to be positioned below the movable locking block. At this point, the movable spring holds the movable limiting block, causing the movable locking block to enter the second top-holding groove and disengage from the locking groove. This releases the limiting and fixing of the sampling cylinder, allowing it to be removed. Similarly, the sampling cylinder can be installed at the bottom of the sampling base plate for easy replacement. Attached Figure Description

[0029] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;

[0031] Figure 3 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0032] Figure 4 for Figure 3 An enlarged schematic diagram of the structure at point A;

[0033] Figure 5 for Figure 4 An enlarged schematic diagram of the structure at point B;

[0034] Figure 6 This is a three-dimensional structural diagram of the linkage sleeve and sampling rod of the present invention;

[0035] Figure 7 This is a cross-sectional perspective view of the linkage sleeve and sampling rod of the present invention.

[0036] Figure 8 This is a three-dimensional structural diagram of the piston sleeve of the present invention;

[0037] Figure 9 This is a partial three-dimensional structural diagram of the linkage sleeve of the present invention.

[0038] In the figure: 1, sampling base plate; 2, upper movable plate; 3, movable block; 4, connecting rod; 5, rotating handle; 6, connecting sleeve; 7, sampling pull rod; 8, sampling cylinder; 9, connecting rod groove; 10, through hole; 11, first rotating groove; 12, first rotating block; 13, piston sleeve; 14, piston head; 15, second rotating groove; 16, second rotating block; 17, second retaining groove; 18, retaining spring; 19, connecting groove; 20, connecting plate; 21, sealing strip; 22, clamping groove; 23, movable clamping block; 25, movable groove; 26, movable limiting groove; 27, movable limiting block; 28, movable spring; 29, movable inclined surface; 30, adjusting plate; 31, adjusting limiting groove; 32, adjusting pull plate; 33, guide column; 3301, first guide column; 3302, second guide column; 34, guide groove; 3401, adjusting hole; 35, limiting rod; 36, limiting baffle; 37, baffle groove; 38, limiting spring; 39, adjusting block; 40, retaining groove; 41, retaining spring. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0040] Embodiment one:

[0041] Please refer to Figures 1 to 9 The present application provides a technical solution: a water quality sampler for water plants, comprising: a sampling base plate 1; an upper movable plate 2 rotatably arranged above the sampling base plate 1; a rotating handle 5 arranged at the top end of the upper movable plate 2; a movable block 3 arranged on the side of the upper movable plate 2 away from the rotating handle 5; a piston sleeve 13 arranged on the movable block 3 and in space communication with the bottom of the upper movable plate 2; a piston head 14 arranged inside the piston sleeve 13; a sampling pull rod 7 having one end connected to the top end of the piston sleeve 13 and the other end located outside the piston sleeve 13; a connecting sleeve 6 sleeved outside the piston sleeve 13, and one end of the sampling pull rod 7 passing through the connecting sleeve 6; a plurality of sampling cylinders 8 arranged at the bottom end of the sampling base plate 1, the top ends of the sampling cylinders 8 being in communication with the top of the sampling base plate 1, and the plurality of sampling cylinders 8 being distributed on the movement track of the piston sleeve 13.

[0042] The first rotating groove 11 is arranged in the connecting sleeve 6, the first rotating block 12 is arranged at the position corresponding to the first rotating groove 11 of the sampling pull rod 7, and the first rotating block 12 is located in the first rotating groove 11, the second rotating groove 15 is arranged in the bottom end of the upper movable plate 2, the second rotating block 16 is arranged at the position corresponding to the second rotating groove 15 of the sampling bottom plate 1, and the second rotating block 16 is located in the second rotating groove 15.

[0043] The piston head 14 is pulled to slide in the piston sleeve 13 by the sampling pull rod 7, so as to drive the sampling liquid to flow into the sampling cylinder 8, and the upper movable plate 2 is rotated above the sampling bottom plate 1 by rotating the handle 5, so that a group of sampling pull rods 7 are aligned with a plurality of groups of sampling cylinders 8, and the water quality in different areas is sampled and tested through the plurality of groups of sampling cylinders 8 arranged at the bottom end of the sampling bottom plate 1.

[0044] Embodiment two:

[0045] As shown in Figures 6-9 The water quality sampler for water plants disclosed in the embodiment two of the present application has the same structure as that in the embodiment one, and the difference lies in that the sampling liquid entering the sampling cylinder 8 is quantitatively extracted, the guide grooves 34 rising spirally are arranged outside the piston sleeve 13, the guide grooves 34 are provided with two, the guide columns 33 are arranged at the positions corresponding to the guide grooves 34 near the bottom end of the connecting sleeve 6, the guide column 33 comprises the first guide column 3301 and the second guide column 3302, and one end of the first guide column 3301 and one end of the second guide column 3302 are respectively arranged to slide in the two guide grooves 34.

[0046] The adjusting holes 3401 vertically distributed are arranged in the guide grooves 34, the top holding grooves 40 are arranged at the positions corresponding to the adjusting holes 3401 of the second guide column 3302, the adjusting blocks 39 are arranged to slide in the top holding grooves 40, the adjusting block 39 has a circular truncated cone structure, and the first elastic member is arranged between the adjusting block 39 and the top holding groove 40, the first elastic member comprises the top holding spring 41, one end of the top holding spring 41 is connected with the adjusting block 39, the other end of the top holding spring 41 is connected with the top holding groove 40, and the top holding spring 41 is always in a compressed state.

[0047] The first guide column 3301 is provided with a baffle slot 37, the first guide column 3301 is provided with a limiting rod 35 at the position of the corresponding adjusting hole 3401, the limiting rod 35 passes through the baffle slot 37 and passes out of the first guide column 3301, the limiting rod 35 is provided with a limiting baffle 36 at the position corresponding to the baffle slot 37, and a second elastic element is arranged between the limiting baffle 36 and the baffle slot 37, for pushing the limiting rod 35 into the adjusting hole 3401, the second elastic element includes a limiting spring 38, one end of the limiting spring 38 is connected with the baffle slot 37, the other end is overlapped with the limiting baffle 36, and the limiting spring 38 is always in a compressed state, and the limiting rod 35 passes out of the connecting sleeve 6 at one end away from the guide slot 34 and is provided with an adjusting pull plate 32, the adjusting pull plate 32 is provided with an adjusting plate 30 directly above, the adjusting plate 30 is arranged outside the connecting sleeve 6, and the adjusting plate 30 is provided with an adjusting limiting slot 31 away from the connecting sleeve 6, and the adjusting limiting slot 31 limits the adjusting pull plate 32.

[0048] By moving the piston head 14 in the piston sleeve 13 driven by the sampling pull rod 7, at this time the sampling pull rod 7 is rotationally connected with the connecting sleeve 6, the sampling pull rod 7 drives the connecting sleeve 6 to move, the connecting sleeve 6 drives the guide column 33 to move in the guide slot 34, and when the adjusting block 39 is aligned with the adjusting hole 3401, the top-holding spring 41 holds the adjusting block 39 to enter the inside of the adjusting hole 3401, at this time a "click" sound is heard, thereby cooperating with multiple adjusting holes 3401 to quantitatively extract, and vice versa, the sampling liquid can be quantitatively discharged, when the guide column 33 moves to the quantitatively corresponding adjusting hole 3401, the adjusting pull plate 32 is pulled outward, so that the adjusting pull plate 32 is separated from the adjusting limiting slot 31, then the adjusting pull plate 32 is rotated to move away from the adjusting plate 30, at this time the adjusting pull plate 32 is loosened, the baffle slot 37 holds the limiting baffle 36 to drive the limiting rod 35 to move towards the guide slot 34, then when the guide column 33 moves to the quantitatively corresponding adjusting hole 3401, the baffle slot 37 holds the limiting baffle 36 to drive the limiting rod 35 to enter the inside of the adjusting hole 3401, thereby limiting and fixing the connecting sleeve 6 and the sampling pull rod 7, preventing sampling errors, and facilitating accurate quantitative sampling.

[0049] Embodiment three:

[0050] As Figures 3-5As shown, the water quality sampler for water plant disclosed in the third embodiment of the present application has the same structure as that in the second embodiment, and the difference lies in that the sampling cylinder 8 is disassembled, the through hole 10 is formed on the surface of the sampling base plate 1, the through hole 10 is arranged on the sampling base plate 1 in a circumferential staggered manner with the sampling cylinder 8, the sealing strip 21 is arranged at the top end of the sampling cylinder 8, the second top holding groove 17 is formed at the top end of the sampling cylinder 8 and located outside the sealing strip 21, the connecting plate 20 is slidably arranged in the second top holding groove 17, and the third elastic member is arranged between the connecting plate 20 and the second top holding groove 17, and the third elastic member includes the top holding spring 18, one end of the top holding spring 18 is connected with the connecting plate 20, the other end is connected with the second top holding groove 17, and the top holding spring 18 is always in a compressed state.

[0051] The connecting rod groove 9 is formed at one side of the second top holding groove 17, the connecting rod groove 9 is arranged through the sampling cylinder 8, the connecting rod 4 is arranged at the position of the lower end of the connecting plate 20 corresponding to the connecting rod groove 9, the connecting rod 4 is in the shape of "L", one end of the connecting rod 4 is arranged through the sampling base plate 1, the connecting groove 19 is formed at the position of the connecting plate 20 corresponding to the movable block 3, and the connecting groove 19 is clamped with the connecting plate 20, the movable groove 25 is formed in the sampling cylinder 8, the movable groove 25 is arranged through the sampling cylinder 8 and the second top holding groove 17, and the movable groove 25 is located above the connecting rod groove 9, the movable clamping block 23 is slidably arranged in the movable groove 25, the length of the movable clamping block 23 is greater than the length of the movable groove 25, the clamping groove 22 is formed at the position of the sampling base plate 1 corresponding to the movable clamping block 23, and the clamping groove 22 is clamped with the movable clamping block 23.

[0052] The movable inclined surface 29 is formed at the lower end of the side of the movable clamping block 23 close to the connecting plate 20, the horizontal length of the movable inclined surface 29 is greater than the length of the movable clamping block 23, the movable limiting groove 26 is formed at the upper and lower ends of the movable groove 25, the movable limiting block 27 is arranged at the position of the movable clamping block 23 corresponding to the movable limiting groove 26, and the fourth elastic member is arranged between the movable limiting block 27 and the movable limiting groove 26, and the fourth elastic member includes the movable spring 28, one end of the movable spring 28 is connected with the movable limiting block 27, the other end is connected with the movable limiting groove 26, the movable spring 28 is always in a compressed state, and the elastic force of the movable spring 28 is smaller than that of the top holding spring 18.

[0053] By pressing the connecting rod 4, the connecting plate 20 is driven to move downward, so that the connecting plate 20 enters the inside of the second top holding groove 17, the movable block 3 is conveniently rotated to the upper side of the sampling cylinder 8, then the connecting rod 4 is continuously pressed, the connecting plate 20 is located below the movable clamping block 23, at this time the movable spring 28 holds the movable limiting block 27 to drive the movable clamping block 23 to enter the inside of the second top holding groove 17 and to be separated from the clamping groove 22, the limiting and fixing of the sampling cylinder 8 is cancelled, so that the sampling cylinder 8 is taken out, and the sampling cylinder 8 is installed at the bottom end of the sampling base plate 1 in the same way, which is convenient for replacing the sampling cylinder 8.

[0054] The specific scheme is:

[0055] By taking the sample pull rod 7 drive piston head 14 inside the piston sleeve 13 move, when the sample pull rod 7 and linkage sleeve 6 rotation connection, the sample pull rod 7 drive linkage sleeve 6 move, linkage sleeve 6 drive guide post 33 inside the guide slot 34 move, and when the adjusting block 39 and adjusting hole 3401 alignment, top holding spring 41 top holding adjusting block 39 into the adjusting hole 3401 inside, at this time hear a "click" sound, thereby through a plurality of adjusting hole 3401 cooperation and then quantitative extraction, vice can be quantitative export of sample liquid, when the guide post 33 move to the quantitative corresponding adjusting hole 3401 before, pull the adjusting plate 32 outward, so that the adjusting plate 32 away from the adjusting plate 30, at this time loose adjusting plate 32, then baffle slot 37 top holding limiting baffle 36 drive limiting rod 35 towards the guide slot 34 move, then guide post 33 move to the quantitative corresponding adjusting hole 3401, baffle slot 37 top holding limiting baffle 36 drive limiting rod 35 into the adjusting hole 3401 inside, thereby limiting sleeve 6 and sample pull rod 7 fixed, prevent sampling error, facilitate the precision quantitative sampling, by rotating the handle 5 drive the upper movable plate 2 above the sampling base plate 1 rotate, so that a group of sample pull rod 7 and a plurality of sample cylinder 8 alignment, by setting the through hole 10 between the adjacent two groups of sample cylinder 8, facilitate in a group of sample cylinder 8 extraction after, through the through hole 10 reset the sample pull rod 7 and piston head 14, facilitate the next group of sample cylinder 8 extraction, and through the sampling base plate 1 bottom end set a plurality of sample cylinder 8, realize the sampling test of water quality in different area.

[0056] By pressing the connecting rod 4, drive the connecting plate 20 downward, so that the connecting plate 20 into the second top holding groove 17, facilitate the movable block 3 rotate to the sampling cylinder 8 above, then continue to press the connecting rod 4, so that the connecting plate 20 below the movable block 23, at this time the movable spring 28 top holding movable limiting block 27 drive movable block 23 into the second top holding groove 17, and away from the clamping groove 22, cancel the limiting fixed of the sampling cylinder 8, so as to take out the sampling cylinder 8, the same reason will install the sampling cylinder 8 in the sampling base plate 1 bottom end, facilitate the replacement of sampling cylinder 8.

[0057] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water quality sampler for a water plant, characterized in that, include: Sampling base plate (1); The upper movable plate (2) is rotatably set above the sampling base plate (1); Rotate the handle (5) to the top of the upper movable plate (2); The movable block (3) is located on the side of the upper movable plate (2) away from the rotating handle (5); Piston sleeve (13) is set on movable block (3) and is connected to the bottom space of upper movable plate (2); The piston head (14) is located inside the piston sleeve (13); The sampling rod (7) is connected at one end to the top of the piston head (14) and at the other end outside the piston sleeve (13); The linkage sleeve (6) is sleeved outside the piston sleeve (13), and one end of the sampling rod (7) passes through the linkage sleeve (6). Sampling cylinder (8) is set at the bottom of sampling base plate (1), and there are multiple of them. The top of sampling cylinder (8) is connected to the top of sampling base plate (1). Multiple sampling cylinders (8) are distributed on the movement trajectory of piston sleeve (13). The linkage sleeve (6) has a first rotating groove (11) inside. The sampling pull rod (7) is provided with a first rotating block (12) at the position corresponding to the first rotating groove (11), and the first rotating block (12) is located in the first rotating groove (11). The bottom end of the upper movable plate (2) has an annular second rotating groove (15), and the sampling base plate (1) is provided with an annular second rotating block (16) at the position corresponding to the second rotating groove (15), and the second rotating block (16) is located in the second rotating groove (15). The piston sleeve (13) is provided with a spirally rising guide groove (34). There are two guide grooves (34). A guide post (33) is provided at the position of the corresponding guide groove (34) near the bottom of the linkage sleeve (6). The guide post (33) includes a first guide post (3301) and a second guide post (3302). One end of the first guide post (3301) and one end of the second guide post (3302) are respectively slidably disposed in the two guide grooves (34). The guide groove (34) is provided with vertically distributed adjustment holes (3401), and the second guide post (3302) is provided with a top holding groove (40) at the position of the corresponding adjustment hole (3401). An adjustment block (39) is slidably arranged in the top holding groove (40). The adjustment block (39) has a frustum-shaped structure, and a first elastic element is provided between the adjustment block (39) and the top holding groove (40). A baffle groove (37) is provided in the first guide post (3301). A limit rod (35) is provided at the position of the corresponding adjustment hole (3401) of the first guide post (3301). The limit rod (35) passes through the baffle groove (37) and extends out of the first guide post (3301). A limit baffle (36) is provided at the position of the limit rod (35) corresponding to the baffle groove (37). A second elastic element is provided between the limit baffle (36) and the baffle groove (37) for pushing the limit rod (35) into the adjustment hole (3401). The end of the limiting rod (35) away from the guide groove (34) extends out of the linkage sleeve (6) and is provided with an adjusting pull plate (32). An adjusting plate (30) is provided directly above the adjusting pull plate (32). The adjusting plate (30) is located outside the linkage sleeve (6), and an adjusting limiting groove (31) is provided on the side of the adjusting plate (30) away from the linkage sleeve (6). The adjusting limiting groove (31) limits the adjusting pull plate (32).

2. The water quality sampler for water plants according to claim 1, characterized in that: The top of the sampling tube (8) is provided with a sealing strip (21), and the top of the sampling tube (8) is provided with a second top holding groove (17). The second top holding groove (17) is located outside the sealing strip (21). A connecting plate (20) is slidably provided in the second top holding groove (17), and a third elastic element is provided between the connecting plate (20) and the second top holding groove (17). A connecting groove (19) is provided at the position of the corresponding connecting plate (20) of the movable block (3), and the connecting groove (19) is engaged with the connecting plate (20).

3. The water quality sampler for water plants according to claim 2, characterized in that: The outer wall of the sampling tube (8) is provided with a connecting rod groove (9), which is connected to the second top support groove (17). A connecting rod (4) is provided at the position of the corresponding connecting rod groove (9) at the lower end of the connecting plate (20). The connecting rod (4) is in the shape of "L", and one end of the connecting rod (4) passes through the sampling base plate (1).

4. The water quality sampler for water plants according to claim 3, characterized in that: The outer wall of the sampling tube (8) is provided with a movable groove (25), and the movable groove (25) is located above the connecting rod groove (9). A movable locking block (23) is slidably arranged in the movable groove (25). The length of the movable locking block (23) is greater than the length of the movable groove (25). A locking groove (22) is provided at the position of the corresponding movable locking block (23) on the sampling base plate (1), and the locking groove (22) engages with the movable locking block (23).

5. The water quality sampler for water plants according to claim 4, characterized in that: The movable groove (25) passes through the second top holding groove (17). The movable block (23) has a movable inclined surface (29) at the lower end near the connecting plate (20). The movable groove (25) has movable limiting grooves (26) at the upper and lower ends. The movable block (23) has a movable limiting block (27) at the position of the movable limiting groove (26). A fourth elastic element is provided between the movable limiting block (27) and the movable limiting groove (26) to push the movable block (23) toward the second top holding groove (17).

Images