Water quality sampling device for environmental monitoring and its working method

Abstract

The present invention belongs to the field of testing technology, and particularly relates to a water quality sampling device for environmental monitoring and its working method; among them, a water quality sampling device for environmental monitoring includes: a pump body; a limit assembly, which is slidably arranged on the side wall of the pump body; a cover plate, which is hinged on the side wall of the positioning assembly and is used to cover the pump body; a limit adjusting member, which is arranged on the inner wall of the cover plate and corresponds to the water inlet and outlet ends of the hose; wherein, the limit assembly slides along the side wall of the pump body to release or press the hose; after the cover plate abuts against the pump body, the limit assembly slides back to its original position, and the limit adjusting member abuts against and rotates the hose to press and limit the hose; through the setting of the limit adjusting member, the limit effect on the hose is improved, and at the same time, the wear caused by the relative displacement of the hose relative to the pump body can be avoided.

Description

Technical Field

[0001] The present invention belongs to the field of testing technologies, and particularly relates to a sampling device, and more particularly to a water quality sampling device for environmental monitoring and its working method. Background Art

[0002] A peristaltic pump is a positive displacement pump that transports fluids by rotating rollers or cams to squeeze an elastic hose. By periodically squeezing and releasing the hose, the fluid is pushed to be transported unidirectionally from the inlet to the outlet. However, during the operation of the peristaltic pump, the hose will gradually wear due to repeated squeezing and releasing, resulting in a limited service life and the need for regular replacement.

[0003] To facilitate the replacement of the hose, in the prior art, one side cover of the peristaltic pump is usually designed to be detachable. After the cover is closed, the limiting block on the side wall of the cover abuts against the outer wall of the hose, playing a certain limiting role. However, if the squeezing force of the cover on the hose is too small, the flow rate will be unstable, and if the squeezing force is too large, the wear will be aggravated.

[0004] Therefore, how to avoid the aggravation of hose wear is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered to constitute the information of the prior art. Summary of the Invention

[0006] The embodiments of the present disclosure at least provide a water quality sampling device for environmental monitoring and its working method.

[0007] In a first aspect, the embodiments of the present disclosure provide a water quality sampling device for environmental monitoring, including:

[0008] A pump body;

[0009] A limiting assembly, which is slidably arranged on the side wall of the pump body;

[0010] The limiting assembly includes a cover plate for covering the pump body;

[0011] A limiting adjustment member, which is arranged on the inner wall of the cover plate and corresponds to the water inlet and outlet ends of the hose;

[0012] Wherein, the limiting assembly slides along the side wall of the pump body to release or press the hose;

[0013] After the cover plate abuts against the pump body, the limiting assembly slides back to its original position, and the limiting adjustment member abuts against the hose and rotates to form a wavy protrusion to tightly limit the hose.

[0014] In an optional embodiment, the limiting adjustment member includes: a fixing block, which is vertically arranged on the inner wall of the cover plate and faces the hose;

[0015] Two limit discs, the two limit discs are symmetrically arranged on both sides of the fixed block and are in contact with the hose to form a hose convex area;

[0016] A positioning shaft, which penetrates the fixed block, and the two limit discs are eccentrically sleeved on the outer wall of the positioning shaft to form a fluctuating extrusion;

[0017] Wherein, when the cover plate is turned over to be in contact with the pump body, the outer wall of the limit disc closest to the positioning shaft is in contact with the hose;

[0018] The limit component resets and slides, and the limit disc rotates around the positioning shaft to extrude the limit hose, so that the hose forms the fluctuating convexity.

[0019] In an optional implementation manner, a chamfer is provided on the side wall of the limit disc close to the fixed block;

[0020] Wherein, after the limit disc is in contact with the hose, the limit disc rotates relative to the hose to extrude the hose into a convex shape, so that the chamfer and the outer side wall of the limit disc are in contact with the hose at the same time;

[0021] Wherein, the convex height is not less than 1 / 5 of the diameter of the limit disc.

[0022] In an optional implementation manner, the distance between the axis of the positioning shaft and the axis of the limit disc is 1 / 3 - 1 / 2 of the radius of the limit disc.

[0023] In an optional implementation manner, the thickness of the limit disc is 1 / 5 - 1 / 3 of the diameter of the hose;

[0024] The thickness of the fixed block is 1 / 6 - 1 / 5 of the diameter of the hose.

[0025] In an optional implementation manner, the limit component further includes: a limit plate, which is slidably arranged on the side wall of the pump body;

[0026] The cover plate is hinged to the side wall of the limit plate;

[0027] A limit member, which is rotatably arranged on the side wall of the limit plate and penetrates the pump body;

[0028] A guide post, which is vertically arranged on the side wall of the limit plate and is slidably matched with the pump body;

[0029] Wherein, when the limit member rotates 90°, the limit plate slides relative to the pump body.

[0030] In an optional implementation manner, the limit member includes: a rotating wheel, which is rotatably arranged on the pump body;

[0031] A limiting shaft is rotatably arranged on the limiting plate, and the limiting shaft is eccentrically arranged on the side wall of the rotating wheel;

[0032] A wrench is vertically fixed on the outer wall of the limiting shaft;

[0033] Wherein, when the wrench drives the limiting shaft to rotate, the rotating wheel rotates synchronously to drive the limiting plate to slide relative to the pump body.

[0034] In an optional embodiment, a locking column is telescopically arranged on the side of the limiting plate away from the pump body, and the locking column penetrates through the limiting plate;

[0035] A positioning hole adapted to the locking column is formed in the side wall of the pump body, and the locking column is adapted to be inserted into the positioning hole.

[0036] In an optional embodiment, a driving motor is arranged on the side wall of the pump body;

[0037] A rotating disc is arranged in the pump body, and the rotating disc is fixed at the end of the rotating shaft of the driving motor;

[0038] Two pressure pipe fittings are oppositely arranged on the rotating disc, and the pressure pipe fittings are in contact with the hose.

[0039] In an optional embodiment, the pressure pipe fitting includes: two positioning blocks arranged on the side wall of the rotating disc;

[0040] A connecting rod, one end of which is hinged to the side wall of the positioning block and the other end faces the hose;

[0041] A silica gel pressure roller is rotatably arranged at the end of the connecting rod and is in contact with the hose;

[0042] An adjusting rod, one end of which is fixed to the side wall of the positioning block and penetrates through the connecting rod;

[0043] A compression spring is sleeved on the outer wall of the adjusting rod and is in contact with the connecting rod.

[0044] In a second aspect, the embodiments of the present disclosure further provide a water quality sampling and conveying device, including:

[0045] A limiting component is slidably arranged on the side wall of the pump body;

[0046] A cover plate is hinged to the side wall of the limiting component and is adapted to cover the pump body;

[0047] A fixing block is vertically arranged on the inner wall of the cover plate and faces the hose;

[0048] Two limiting discs are respectively rotatably arranged on both sides of the fixing block, and the positioning shaft of the limiting disc is eccentrically arranged with its axis;

[0049] When the limiting component slides back to its original position, the limiting disk rotates around the positioning shaft to squeeze the limiting hose.

[0050] In an alternative embodiment, the distance between the axis of the limiting shaft and the axis of the limiting disk is 1 / 3 - 1 / 2 of the radius of the limiting disk.

[0051] In a third aspect, the embodiments of the present disclosure further provide a working method for a sampling device, and the working method includes:

[0052] When replacing the hose, the limiting component slides away from the hose, and the cover plate is flipped to replace the hose inside the pump body;

[0053] After the hose is assembled, the cover plate is flipped to cover the side wall of the pump body, and the limiting disk abuts against the hose;

[0054] The limiting component slides back to its original position, and the limiting disk rotates around the positioning shaft, so that the outer wall of the limiting disk away from the positioning shaft abuts against the hose to squeeze the limiting hose.

[0055] The beneficial effects of the present invention are as follows: The present invention provides a water quality sampling device for environmental monitoring and its working method. Through the setting of the limiting adjustment member, after the hose replacement is completed, the limiting plate slides back to its original position, the limiting disk rotates eccentrically, and the circumferential outer wall of the limiting disk rotates relative to the outer wall of the hose, realizing the reduction of the friction between the limiting disk and the outer wall of the hose. At the same time, the wave-shaped protrusions formed by the eccentric rotation of the limiting disk also achieve the effect of pressing the hose, improving the limiting effect of the limiting disk on the hose, and at the same time slowing down the wear between the limiting disk and the hose.

[0056] Other features and advantages of the present invention will be described in the following specification, and part of them will become obvious from the specification or be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0057] To make the above objectives, features, and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby given and described in detail in conjunction with the accompanying drawings as follows. Description of the Drawings

[0058] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0059] Figure 1 It is a first perspective three-dimensional view of the water quality sampling device for environmental monitoring provided by the embodiments of the present disclosure;

[0060] Figure 2 A perspective view of the cover plate and the limit assembly provided by the embodiment of the present disclosure;

[0061] Figure 3 A transverse front view of the limit disk and the hose provided by the embodiment of the present disclosure;

[0062] Figure 4 A transverse front view of the limit disk squeezing the hose to deform provided by the embodiment of the present disclosure;

[0063] Figure 5 A longitudinal front view of the limit disk and the hose provided by the embodiment of the present disclosure;

[0064] Figure 6 A longitudinal front view of the limit disk squeezing the hose to deform provided by the embodiment of the present disclosure;

[0065] Figure 7 A second - perspective perspective view of the water quality sampling device for environmental monitoring provided by the embodiment of the present disclosure;

[0066] Figure 8 A sectional perspective view of the limiting member provided by the embodiment of the present disclosure;

[0067] Figure 9 An internal perspective view of the pump body provided by the embodiment of the present disclosure.

[0068] In the figure:

[0069] 1. Pump body; 10. Driving motor; 11. Rotating disk; 12. Pressure pipe fitting; 13. Positioning block; 14. Connecting rod; 15. Silicone pressure roller; 16. Adjusting rod; 17. Compression spring;

[0070] 2. Limit assembly; 21. Limit plate; 22. Limiting member; 23. Guide post; 24. Rotating wheel; 25. Limit shaft; 26. Wrench; 27. Locking post;

[0071] 3. Cover plate; 4. Hose;

[0072] 5. Limit adjusting member; 51. Fixed block; 52. Limit disk; 53. Positioning shaft. Detailed implementation manners

[0073] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0074] In this document, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or a third component may be interposed between the first component and the second component. Additionally, in the drawings, to effectively describe the technical content, the thickness of components may be exaggerated or reduced.

[0075] In this document, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0076] The terms used herein are only for describing specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a," "an," and "the" may also be intended to include the plural forms, unless clearly indicated otherwise in the context. The terms "comprising," "including," and "having" are inclusive and thus specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an order of performance. Additional or alternative steps may be employed.

[0077] As used herein, phrases such as "in one embodiment," "according to one embodiment," "in some embodiments," etc., generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," etc., are used "as an example, instance, or illustration." Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other embodiments, aspects, or designs. Instead, the use of the terms "example," "exemplary," etc., is intended to present concepts in a concrete manner.

[0078] It has been found through research that the disadvantages of the prior art are as follows: During the operation of a peristaltic pump, the hose will gradually wear due to repeated squeezing and releasing, resulting in a limited service life and the need for regular replacement.

[0079] To facilitate the replacement of the hose, in the prior art, one side cover of the peristaltic pump is usually designed to be detachable. After the cover is closed, its limiting block abuts against the outer wall of the hose, playing a certain limiting role. However, even so, when the peristaltic pump is working, the hose may still displace relative to the pump body. This displacement will not only accelerate the wear of the hose but also cause unstable flow rate.

[0080] Therefore, how to avoid the aggravated wear caused by the hose displacement is a technical problem that needs to be urgently solved in this field.

[0081] Regarding the defects existing in the above solutions, they are all the results obtained by the inventor after practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed by the present disclosure in this article for the above problems should be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0082] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0083] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0084] As Figures 1 to 9 shown, at least one embodiment provides a water quality sampling device for environmental monitoring, including: a pump body 1; a driving motor 10 is arranged on the side wall of the pump body 1; a chamber is arranged inside the pump body 1, and a rotating disk 11 is arranged inside the chamber. The rotating disk 11 is fixed at the end of the rotating shaft of the driving motor 10; a hose 4 is arranged circumferentially around the rotating disk 11, and the water inlet and outlet ends of the inlet hose 4 are both located on the same side of the pump body 1. Two pressing pipe fittings 12 are oppositely arranged on the rotating disk 11, and the pressing pipe fittings 12 abut against the hose 4.

[0085] Refer to the attached Figure 1, a limiting component 2, which is slidably arranged on the side wall of the pump body 1; the limiting component 2 includes a cover plate 3 for covering the pump body 1; a limiting adjustment member 5, which is arranged on the inner wall of the cover plate 3 and corresponds to the water inlet and outlet ends of the hose 4; wherein, the limiting component 2 slides along the side wall of the pump body 1 to release or press the hose 4; when replacing the hose 4, the limiting component 2 slides in a direction away from the hose 4 until the cover plate 3 disengages from a limiting post on the pump body 1, and the cover plate 3 flips upward relative to the limiting component 2 to facilitate the replacement of the hose 4 inside the pump body 1. After the hose 4 is replaced, when the cover plate 3 flips toward the pump body 1 until it abuts against the pump body 1, at this time the limiting adjustment member 5 abuts against the hose 4, and the limiting component 2 slides back to its original position. The limiting adjustment member abuts against the hose 4 and rotates to form a wavy protrusion to press and limit the hose 4. Through the arrangement of the limiting adjustment member 5, after the hose 4 is replaced, the limiting component 2 slides back to its original position, and the limiting disk 52 rotates eccentrically to achieve the effect of pressing the hose 4; not only improving the limiting effect of the limiting disk 52 on the hose 4, but also slowing down the wear between the limiting disk 52 and the hose 4.

[0086] Reference appendix Figure 2 , the limiting adjustment member 5 includes: a fixed block 51, which is vertically arranged on the inner wall of the cover plate 3 and faces the hose 4; two limiting disks 52, the two limiting disks 52 are symmetrically arranged on both sides of the fixed block 51 and abut against the hose 4; the limiting disk 52 is adapted to rotate relative to the fixed block 51. A positioning shaft 53, which penetrates the fixed block 51, and the two limiting disks 52 are eccentrically sleeved on the outer wall of the positioning shaft 53; the limiting disk 52 rotates relative to the fixed block 51 with the positioning shaft 53 as the axis.

[0087] Reference appendix Figure 3 and Figure 5 , when the cover plate 3 flips to abut against the pump body 1, the outer wall of the limiting disk 52 closest to the positioning shaft 53 abuts against the hose 4; at this time, the extrusion force of the limiting disk 52 on the hose 4 is the smallest.

[0088] Reference appendix Figure 4 and Figure 6 , the limiting component 2 slides back to its original position. During this process, the limiting disk 52 rubs against the outer wall of the hose 4 to make the limiting disk 52 rotate relative to the fixed block 51. The limiting disk 52 rotates with the positioning shaft 53 as the axis to squeeze and limit the hose 4. Until the outer wall of the limiting disk 52 farthest from the positioning shaft 53 abuts against the hose 4, at this time the extrusion force received by the hose 4 is the largest.

[0089] In the traditional technology, an extrusion block is mostly arranged on the inner wall of the cover plate 3 corresponding to the hose 4. The extrusion block extrudes the hose 4 to deform, so as to limit the hose 4 and prevent it from displacing during the operation of the peristaltic pump. However, when the limiting block slides relative to the hose 4, the outer wall of the hose 4 will be worn. For this reason, in the prior art, the shape of the extrusion block is set to be arc-shaped adapted to the hose 4 to slow down the wear of the outer wall of the hose 4 by the edge of the limiting block during the sliding process of the cover plate 3. However, the arc-shaped limiting block moves horizontally relative to the hose 4, and still will frictionally damage the outer wall of the hose 4. In this embodiment, referring to the attached Figure 4 and Figure 5 , the two limiting discs 52 arranged oppositely, their outer walls are in contact with the hose 4, and the circumferential outer walls of the limiting discs 52 are in contact with the hose 4, reducing the contact area; during the horizontal sliding process of the cover plate 3, the limiting discs 52 rotate relative to the hose 4, which not only reduces the wear of the outer wall of the hose 4 by the limiting discs 52, but also the eccentrically arranged limiting discs 52 have a better effect of squeezing and limiting the hose 4, avoiding the displacement of the hose 4 during the operation of the peristaltic pump and improving the service life of the hose 4.

[0090] Referring to the attached Figure 3 , the distance between the axis of the positioning shaft 53 and the axis of the limiting disc 52 is 1 / 3 - 1 / 2 of the radius of the limiting disc 52. Preferably, the smaller the distance between the axis of the positioning shaft 53 and the axis of the limiting disc 52, the smaller the squeezing force of the limiting disc 52 on the hose 4 during the eccentric rotation. The larger the distance between the axis of the positioning shaft 53 and the axis of the limiting disc 52, the greater the squeezing force of the limiting disc 52 on the hose 4 during the eccentric rotation. Different distances between the axis of the positioning shaft 53 and the axis of the limiting disc 52 can be adapted to hoses 4 with different diameters.

[0091] Referring to the attached Figure 6 , a chamfer is provided on the side wall of the limiting disc 52 close to the fixed block 51; wherein, after the limiting disc 52 is in contact with the hose 4, the limiting disc 52 rotates relative to the hose 4 to squeeze the hose 4 into a convex shape. The convex height is not less than 1 / 5 of the diameter of the limiting disc 52. The upper end of the hose 4 squeezed into a convex shape is located between the side walls of the two limiting discs 52, so that the hose 4 is in contact with the chamfer and the outer side wall of the limiting disc 52, increasing the contact area between the hose 4 and the side walls of the two limiting discs 52, thereby improving the limiting effect of the limiting disc 52 on the hose 4. In the traditional technology, the extrusion block extrudes the hose 4 to deform, and the hose 4 is extruded into a concave shape. At this time, the contact area between the hose 4 and the extrusion block is small, and the limiting effect of the extrusion block on the hose 4 becomes poor. In this embodiment, the limiting disc 52 is in contact with the hose 4. As the limiting disc 52 rotates eccentrically, the two limiting discs 52 can squeeze the hose 4 into a convex shape. The hose can not only be in contact with the circumferential outer wall of the limiting disc 52, but also the convex hose 4 can be in contact with the inner side wall of the limiting disc 52, further improving the limiting effect of the limiting disc 52 on the hose 4.

[0092] Continue to refer to the appendix Figure 5 The thickness of the limit disc 52 is 1 / 5 - 1 / 3 of the diameter of the hose 4. The thickness of the fixing block 51 is 1 / 6 - 1 / 5 of the diameter of the hose 4. The larger the thickness of the limit disc 52, the larger its contact area with the hose 4. The larger the thickness of the fixing block 51, the larger the distance between the outermost outer walls of the two relatively arranged limit discs 52. When the limit disc 52 rotates eccentrically, the amplitude of its squeezing the hose 4 to deform is larger.

[0093] Refer to the appendix Figure 7 As shown in Figure Figure 7 , the limit component 2 further includes: a limit plate 21, which is slidably arranged on the side wall of the pump body 1; the limit plate 21 is parallel to the pump body 1, and a guide groove adapted to the guide column 23 is provided on the pump body 1; the guide column 23 is vertically arranged on the side wall of the limit plate 21 and is slidably adapted to the pump body 1; the guide column 23 ensures the stability of the limit plate 21 when sliding relative to the pump body 1. The cover plate 3 is hinged on the side wall of the limit plate 21; a limit member 22, which is rotatably arranged on the side wall of the limit plate 21 and penetrates through the pump body 1; among them, when the limit member 22 rotates 90°, the limit plate 21 slides relative to the pump body 1.

[0094] Refer to the appendix Figure 8 As shown in Figure Figure 8 , the limit member 22 includes: a rotating wheel 24, which is rotatably arranged on the pump body 1; a placement groove is provided on the pump body 1 corresponding to the rotating wheel 24, and the rotating wheel 24 is rotatably arranged in the placement groove; a limit shaft 25, which is rotatably arranged on the limit plate 21 and is eccentrically fixed on the side wall of the rotating wheel 24; one end of the limit shaft 25 close to the pump body 1 protrudes from the limit plate 21. When the limit shaft 25 rotates, it drives the rotating wheel 24 to rotate synchronously, and the rotation of the rotating wheel 24 can push the limit plate 21 to slide relative to the pump body 1. Further, an adjustment groove is provided on the side wall of the limit plate 21 close to the rotating wheel 24, and a wrench 26 is reversibly arranged in the adjustment groove. The wrench 26 is vertically fixed on the outer wall of the limit shaft 25; among them, when the wrench 26 rotates 90°, it drives the limit shaft 25 to rotate, and the rotating wheel 24 rotates synchronously to drive the limit plate 21 to slide relative to the pump body 1.

[0095] Refer to the appendix Figure 1 and Figure 9 As shown in Figure Figure 1 and Figure Figure 9 , in order to prevent the limit plate 21 from moving relative to the pump body 1 randomly, a locking column 27 is telescopically arranged on the side of the limit plate 21 away from the pump body 1, and the locking column 27 penetrates through the limit plate 21; a positioning hole adapted to the locking column 27 is provided on the side wall of the pump body 1, and the locking column 27 is adapted to be inserted into the positioning hole. When the limit plate 21 moves relative to the pump body 1 towards the hose 4 direction until the cover plate 3 is locked, the locking column 27 is adapted to be inserted into the positioning hole. At this time, the limit plate 21 cannot continue to slide relative to the pump body 1.

[0096] Reference appendix Figure 9 The pressing pipe fitting 12 includes: two positioning blocks 13 arranged on the side wall of the rotating disc; a connecting rod 14, one end of which is hinged to the side wall of the positioning block 13 and the other end faces the hose 4; a silicone pressing roller 15 rotatably arranged at the end of the connecting rod 14 and abutted against the hose 4; an adjusting rod 16, one end of which is fixed to the side wall of the positioning block 13 and penetrates through the connecting rod 14; and a compression spring 17 sleeved on the outer wall of the adjusting rod 16 and abutted against the connecting rod 14. The arrangement of the compression spring 17 enables the silicone pressing roller 15 to always maintain a certain pressure on the outer wall of the hose 4, improving the stability of the water output of the peristaltic pump.

[0097] Reference appendix Figure 1 At least one embodiment provides a water quality sampling and conveying device, including: a limiting component 2 slidably arranged on the side wall of the pump body 1; a cover plate 3 hinged to the side wall of the limiting component 2 and adapted to cover the pump body 1; a fixing block 51 vertically arranged on the inner wall of the cover plate 3 and facing the hose 4; and two limiting discs 52 rotatably arranged on both sides of the fixing block 51 respectively, and the positioning shaft 53 of the limiting disc 52 is eccentrically arranged with its axis. Wherein, when the limiting component 2 slides back and forth, the limiting disc 52 rotates around the positioning shaft 53 to squeeze the limiting hose 4.

[0098] At least one embodiment provides a working method of a sampling device, and the working method includes:

[0099] When replacing the hose 4, the limiting component 2 slides in a direction away from the hose 4, and the cover plate 3 is flipped to replace the hose 4 inside the pump body 1; after the hose 4 is assembled, the cover plate 3 is flipped to cover the side wall of the pump body 1, and the limiting disc 52 abuts against the hose 4; the limiting component 2 slides back and forth, and the limiting disc 52 rotates around the positioning shaft 53 so that the outer wall of the limiting disc 52 away from the positioning shaft 53 abuts against the hose 4 to squeeze and limit the hose 4.

[0100] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0101] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second" and other numerical terms used herein do not imply order or sequence unless explicitly indicated in the text. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or section discussed above may be referred to as the second element, component, region, layer or section.

[0102] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications within the scope not deviating from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A water quality sampling device for environmental monitoring, characterized in that, Comprising: A pump body (1); A limit component (2), which is slidably arranged on the side wall of the pump body (1); The limit component (2) includes a cover plate (3) for covering the pump body (1); A limit adjusting member (5), which is arranged on the inner wall of the cover plate (3) and corresponds to the water inlet and outlet ends of the hose (4); Wherein, the limit component (2) slides along the side wall of the pump body (1) to release or press the hose (4); After the cover plate (3) abuts against the pump body (1), the limit component (2) slides back to its original position, and the limit adjusting member abuts against and rotates with the hose (4) to form a wave-like protrusion to press and limit the hose (4); The limit adjusting member (5) includes: a fixing block (51), which is vertically arranged on the inner wall of the cover plate (3) and faces the hose (4); Two limit disks (52), which are symmetrically arranged on both sides of the fixing block (51) and abut against the hose (4) to form a hose protrusion area; A positioning shaft (53), which penetrates the fixing block (51), and the two limit disks (52) are eccentrically sleeved on the outer wall of the positioning shaft (53) to form a wave-like extrusion; Wherein, when the cover plate (3) is flipped to abut against the pump body (1), the outer wall of the limit disk (52) closest to the positioning shaft (53) abuts against the hose (4); The limit component (2) slides back to its original position, and the limit disk (52) rotates around the positioning shaft (53) to squeeze and limit the hose (4) so that the hose (4) forms a wave-like protrusion.

2. The water quality sampling device for environmental monitoring according to claim 1, wherein A chamfer is arranged on the side wall of the limit disk (52) close to the fixing block (51); Wherein, after the limit disk (52) abuts against the hose (4), the limit disk (52) rotates relative to the hose (4) to squeeze the hose (4) into a protrusion so that the chamfer and the outer side wall of the limit disk (52) are in contact with the hose (4) simultaneously; Wherein, the height of the protrusion is not less than 1 / 5 of the diameter of the limit disk (52).

3. The water quality sampling device for environmental monitoring according to claim 1, wherein The distance between the axis of the positioning shaft (53) and the axis of the limit disk (52) is 1 / 3 - 1 / 2 of the radius of the limit disk (52).

4. The water quality sampling device for environmental monitoring according to claim 1, wherein The thickness of the limit disk (52) is 1 / 5 - 1 / 3 of the diameter of the hose (4); The thickness of the fixing block (51) is 1 / 6 - 1 / 5 of the diameter of the hose (4).

5. The water quality sampling device for environmental monitoring according to claim 1, wherein The limit component (2) further includes: a limit plate (21), which is slidably arranged on the side wall of the pump body (1); The cover plate (3) is hinged to the side wall of the limit plate (21); A limiting member (22), which is rotatably arranged on the side wall of the limit plate (21) and penetrates the pump body (1); A guiding column (23), which is vertically arranged on the side wall of the limit plate (21) and is slidably matched with the pump body (1); Wherein, when the limiting member (22) rotates by 90°, the limit plate (21) slides relative to the pump body (1).

6. The water quality sampling device for environmental monitoring according to claim 5, wherein the limiting member (22) includes: a rotating wheel (24) rotatably arranged on the pump body (1); a limiting shaft (25) rotatably arranged on the limiting plate (21), and the rotating wheel (24) is eccentrically arranged on the side wall of the rotating wheel (24); a wrench (26) vertically fixed on the outer wall of the limiting shaft (25); wherein, when the wrench (26) drives the limiting shaft (25) to rotate, the rotating wheel (24) rotates synchronously to drive the limiting plate (21) to slide relative to the pump body (1).

7. The water quality sampling device for environmental monitoring according to claim 5, wherein a locking column (27) is telescopically arranged on one side of the limiting plate (21) away from the pump body (1), and the locking column (27) penetrates through the limiting plate (21); a positioning hole adapted to the locking column (27) is formed in the side wall of the pump body (1), and the locking column (27) is adapted to be inserted into the positioning hole.

8. The water quality sampling device for environmental monitoring according to claim 1, wherein a driving motor (10) is arranged on the side wall of the pump body (1); a rotating disk (11) is arranged in the pump body (1), and the rotating disk (11) is fixed at the end of the rotating shaft of the driving motor (10); two pressure pipe fittings (12) are oppositely arranged on the rotating disk (11), and the pressure pipe fittings (12) are in contact with the hose (4).

9. The water quality sampling device for environmental monitoring according to claim 8, wherein the pressure pipe fitting (12) includes: two positioning blocks (13) arranged on the side wall of the rotating disk; a connecting rod (14) with one end hinged to the side wall of the positioning block (13) and the other end facing the hose (4); a silica gel pressure roller (15) rotatably arranged at the end of the connecting rod (14) and in contact with the hose (4); an adjusting rod (16) with one end fixed to the side wall of the positioning block (13) and penetrating through the connecting rod (14); a compression spring (17) sleeved on the outer wall of the adjusting rod (16) and in contact with the connecting rod (14).

10. A water quality sampling and transportation device, characterized in that, including: a limiting component (2) slidably arranged on the side wall of the pump body (1); a cover plate (3) hinged to the side wall of the limiting component (2) and adapted to cover the pump body (1); a fixing block (51) vertically arranged on the inner wall of the cover plate (3) and facing the hose (4); two limiting disks (52) respectively rotatably arranged on both sides of the fixing block (51), and the positioning shaft (53) of the limiting disk (52) is eccentrically arranged with its axis; wherein, when the limiting component (2) slides back to its original position, the limiting disk (52) rotates around the positioning shaft (53) to squeeze the limiting hose (4); the positioning shaft (53) penetrates through the fixing block (51), and the two limiting disks (52) are eccentrically sleeved on the outer wall of the positioning shaft (53) to form a wave-shaped extrusion; wherein, when the cover plate (3) is flipped to abut against the pump body (1), the outer wall of the limiting disk (52) closest to the positioning shaft (53) is in contact with the hose (4); The limiting component (2) slides back to its original position, and the limiting disc (52) rotates about the positioning shaft (53) to squeeze the limiting hose (4), so that the hose (4) forms a wave-like bulge.

11. The water quality sampling and conveying device according to claim 10, wherein The distance between the axis of the limiting shaft (25) and the axis of the limiting disc (52) is 1 / 3 - 1 / 2 of the radius of the limiting disc (52).

12. A working method of a sampling device, characterized in that, Using the water quality sampling device for environmental monitoring according to any one of claims 1 - 9, the working method comprises: When replacing the hose (4), the limiting component (2) slides in a direction away from the hose (4), and the cover plate (3) is flipped to replace the hose (4) inside the pump body (1); After the hose (4) is assembled, the cover plate (3) is flipped to cover the side wall of the pump body (1), and the limiting disc (52) abuts against the hose (4); The limiting component (2) slides back to its original position, and the limiting disc (52) rotates about the positioning shaft (53) so that the outer wall of the limiting disc (52) away from the positioning shaft (53) abuts against the hose (4) to squeeze the limiting hose (4).

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