Device for detecting liquid boundary position in opaque container

Abstract

The utility model discloses a device for detecting the position of a liquid boundary in an opaque container. The device comprises a bracket, a conductivity meter and a weight device made of an insulating material, the bracket is detachably arranged on the upper edge of the container, is of a Z-shaped structure and comprises a cantilever arranged at the upper end and a placement plate arranged at the lower end; the placing plate is used for placing a conductivity meter; one end of a wire of the conductivity meter is connected with the conductivity meter, the other end of the wire extends towards the inner side of the container along the upper side of the cantilever and vertically extends downwards at the end part of the cantilever, and the tail end of the wire is connected with the upper end of the probe; the weight device is provided with a through hole penetrating through the upper end and the lower end of the weight device, the probe is fixedly installed in the through hole, and the lowest end of the probe extends out of the bottom of the through hole. The device has the advantages of simple structure, simplicity in operation, low cost and high measurement speed.

Description

Technical Field

[0001] The utility model belongs to a device for detecting the position of a liquid boundary line in an opaque container. Background Art

[0002] Pharmaceutical and chemical plants often use opaque containers to hold and / or settle specific liquids. After standing and / or settling, the contents separate into two parts: the upper layer, a relatively clear, lower-density supernatant, and the lower layer, a relatively denser precipitate. In practice, the supernatant is typically used, while the precipitate is discarded.

[0003] Since the container is opaque, operators cannot determine the liquid level dividing line between the supernatant and the precipitate, which makes it difficult to control the production process.

[0004] In actual use, conventional hard plate or rod-shaped measuring tools cannot be used for direct measurement, especially for opaque containers, and there is no good solution for determining the internal liquid level boundary line.

[0005] In actual use, a thin line and a special float suspended on the thin line can also be used to determine the position of the liquid level boundary line. However, this method has the disadvantage that the weight of the float is fixed and the float needs to sink by itself, resulting in a very slow measurement speed, which seriously affects the measurement speed. Utility Model Content

[0006] The purpose of the utility model is to provide a device for detecting the position of a liquid boundary line in an opaque container with a simple structure, simple operation and fast measuring speed in response to the deficiencies of the prior art.

[0007] The technical purpose of this utility model is achieved through the following technical solutions:

[0008] A device for detecting the position of a liquid boundary line in an opaque container comprises a bracket, a conductivity meter, and a weight device made of an insulating material; the bracket is detachably mounted on the upper edge of the container, and has a Z-shaped structure, comprising a cantilever mounted at the upper end and a placement plate mounted at the lower end; the placement plate is used to place the conductivity meter; one end of a wire of the conductivity meter is connected to the conductivity meter, and the other end extends along the upper side of the cantilever toward the inside of the container and vertically downward from the end of the cantilever, and is connected to the upper end of a probe at the distal end; the weight device is provided with a through hole extending through its upper and lower ends, the probe is fixedly mounted in the through hole, and the lowermost end of the probe extends out of the bottom of the through hole.

[0009] Preferably, the wire is an insulated wire.

[0010] Preferably, the cantilever at the upper end of the bracket is provided with a wire groove in the middle of the upper side along its length direction.

[0011] Preferably, the weight device has an outer shape of a conical structure that is larger at the top and smaller at the bottom.

[0012] Preferably, the weight device includes a shell, a cover, a hollow tube and a weight, the shell is a conical shell with an open upper end; the cover is used to close the upper end opening of the shell, and the shell and the cover are detachably connected; an opening is provided at the center of the lower end of the shell; the height of the hollow tube is equal to the height from the lower end of the cover to the lower end of the shell; the lower end of the hollow tube is fixed at the opening of the shell; a circular through hole matching the opening is provided at the center of the cover; the weight is placed in the cavity between the shell and the hollow tube; when the cover is connected to the shell, the hollow tube forms a through hole through which the probe passes; the probe is a columnar structure with a diameter equivalent to the inner diameter of the hollow tube, and its overall height is greater than the height between the upper end face of the cover and the lower end face of the shell.

[0013] Preferably, the shell, cover, hollow tube and weight are all made of insulating material.

[0014] Preferably, the weights are glass balls or ceramic beads.

[0015] Preferably, the bracket includes a connecting section, a cantilever connected to the upper end of the connecting section, and a placement plate connected to the lower end of the connecting section; the bracket also includes an adjustable positioning plate; the positioning plate is arranged on the lower side of the cantilever, and the positioning plate and the connecting section are arranged parallel, and the spacing distance between the two is the thickness of the upper edge of the container.

[0016] Preferably, the cantilever is provided with a T-shaped slot along its length and in the middle of its lower side, and the positioning plate includes a T-shaped slider that cooperates with the T-shaped slot and an L-shaped plate fixedly connected to the T-shaped slider; the L-shaped plate includes a vertical plate and a horizontal plate, the horizontal plate is fixed to the lower end of the T-shaped slider, and the horizontal plate is a square plate, which is arranged parallel to the lower side of the cantilever; the vertical plate is vertically fixed to the lower end of the horizontal plate, and the vertical plate is arranged relatively parallel to the connecting section; the horizontal plate is symmetrically provided with two bolt holes along the width direction of the cantilever, and fixing bolts are respectively provided in the bolt holes.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This utility model adds a weight to the probe, enabling rapid downward movement. Furthermore, the conductivity meter is simple to operate and low-cost, with key operating and detection controls located outside the container, extending the device's service life. Therefore, this technical approach offers the advantages of simple structure, easy operation, low cost, and rapid measurement speed.

[0019] 2. The weight device of the present invention is an adjustable weight device. This technical measure allows for flexible adjustment of the weight of the weight device 4, thus having the advantage of a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 It is a diagram of the use state of the utility model;

[0022] Figure 3 yes Figure 2 sectional view of

[0023] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle bracket;

[0024] Figure 5 yes Figure 4 Structural diagram of the middle positioning plate;

[0025] Figure 6 It is a structural diagram of the weight device;

[0026] Figure 7 yes Figure 6 sectional view of

[0027] Figure 8 yes Figure 6 Schematic diagram of the structure of the middle shell;

[0028] Figure 9 yes Figure 6 A schematic diagram of the structure of the middle cover body;

[0029] Reference numerals: 1—bracket; 11—cantilever; 111—wire trough; 112—T-shaped slide; 12—connecting section; 13—placement plate; 14—positioning plate; 141—T-shaped slider; 142—L-shaped plate; 1421—horizontal plate; 1422—vertical plate; 143—bolt hole; 15—bolt;

[0030] 2—conductivity meter; 21—conductor;

[0031] 3—probe;

[0032] 4—weight device; 41—housing; 42—cover; 421—circular through hole; 43—hollow tube;

[0033] 5—Container;

[0034] 6—upper layer of liquid;

[0035] 7—Lower liquid layer. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0038] 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 or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0039] like Figure 1 — Figure 9 As shown, a device for detecting the position of a liquid boundary line in an opaque container includes a bracket 1, a conductivity meter 2, and a weight device 4 made of an insulating material. The bracket 1 is detachably mounted on the upper edge of the container 5. The bracket 1 has a Z-shaped structure and includes a cantilever 11 at the upper end and a placement plate 13 at the lower end. The placement plate 13 is used to place the conductivity meter 2. One end of the wire 21 of the conductivity meter 2 is connected to the conductivity meter 2, and the other end extends along the upper side of the cantilever 11 toward the inside of the container 5 and extends vertically downward from the end of the cantilever 11. The end is connected to the upper end of the probe 3. The weight device 4 has a through hole extending through its upper and lower ends. The probe 3 is fixedly installed in the through hole, and the lowermost end of the probe 3 extends out of the bottom of the through hole.

[0040] During testing, the wire 21 is slowly released, and the probe 3 is driven by the weight device 4 to move from the upper liquid layer 6 to the lower liquid layer 7. When the detected conductivity suddenly changes, it indicates that the lower end of the probe 3 of the conductivity meter 2 has just submerged in the sediment in the lower part of the container 5, that is, it has just stopped at the liquid level boundary between the upper liquid layer 6 and the lower liquid layer 7. At the same time, the release of the wire 21 is stopped at this point. The length of the wire 21 immersed in the liquid is then measured, which is the depth of the upper liquid in the container 5, thereby determining the location of the liquid level boundary. This technical measure effectively solves the problem of accurately measuring the liquid level boundary between the upper liquid layer 6 and the lower liquid layer 7 in an opaque container, achieving the goal of real-time and accurate control of the process.

[0041] In practice, a thin wire with a special float suspended from it can also be used to determine the position of the liquid level boundary. However, this method suffers from the fixed weight of the float, requiring it to sink on its own, resulting in very slow measurement speeds and a significant impact on measurement speed. Adding a weight device 4 to the probe 3 allows for faster downward movement of the probe 3. Furthermore, the conductivity meter 2 is simple to operate and low-cost, with the main operating and detection control components located outside the container 5, extending the device's service life. Therefore, this technical approach offers the advantages of simple structure, easy operation, low cost, and fast measurement speeds.

[0042] like Figure 1 — Figure 5 As shown, the bracket 1 includes a connecting section 12, a cantilever 11 connected to the upper end of the connecting section 12, and a placement plate 13 connected to the lower end of the connecting section 12. The bracket 1 is generally Z-shaped. After the bracket 1 is installed on the upper edge of the container 5, the cantilever 11 and the placement plate 13 face the inner and outer sides of the container 5, respectively.

[0043] In actual use, the connecting section 12 is a square column structure, a square plate structure, etc. The cantilever 11 is a rectangular column structure or a square plate structure.

[0044] like Figure 1 、 Figure 4 As shown, a wire groove 111 cooperating with the wire 21 is provided on the upper side of the cantilever 11 at the upper end of the bracket 1. Specifically, the cantilever 11 is provided with a wire groove 111 along its length direction and in the middle of its upper side. After the conductivity meter 2 is placed on the placement plate 13, one end of the wire 21 is connected to the conductivity meter 2, and the other end thereof extends along the upper side of the cantilever 11 toward the inner side of the container 5 and extends vertically downward at the end of the cantilever 11, and is connected to the upper end of the probe 3 at the end. A weight device 4 is also provided outside the probe 3. The overall length of the cantilever 11 is greater than the radius of the weight device 4. The cantilever 11 and the wire groove 111 ensure that the wire 21 will not move around during the line-laying process, avoid adjusting the wire 21 during the line-laying process, ensure the efficiency of the detection, and at the same time, prevent the probe 3 and the weight device 4 from expanding or rubbing against the inner wall of the container 5.

[0045] like Figure 1 — Figure 5 As shown, the bracket 1 is removably mounted on the upper edge of the container 5. In actual use, the bracket 1 also includes an adjustable positioning plate 14. Positioning plate 14 is positioned on the underside of the cantilever 11 and parallel to the connecting section 12. The distance between the positioning plate 14 and the connecting section 12 is equal to the thickness of the upper edge of the container 5. The positioning plate 14 and the connecting section 12 form a slot structure, which allows the bracket 1 to be fixed to the upper edge of the container 5.

[0046] In actual use, because the top edges of different containers 5 may have different thicknesses, the positioning plate 14 adopts an adjustable structure. By adjusting the distance between the positioning plate 14 and the connecting section 12, it can accommodate containers 5 with top edges of different thicknesses. Specifically, the cantilever 11 is provided with a T-shaped slot 112 along its length and at the middle of its lower side. The positioning plate 14 includes a T-shaped slider 141 that cooperates with the T-shaped slot 112 and an L-shaped plate 142 fixedly connected to the T-shaped slider 141.

[0047] The L-shaped plate 142 includes a vertical plate 1422 and a horizontal plate 1421. The horizontal plate 1421 is fixed to the lower end of the T-shaped slider 141. The horizontal plate 1421 is a square plate. The horizontal plate 1421 is arranged parallel to the lower side of the cantilever 11. The vertical plate 1422 is vertically fixed to the lower end of the horizontal plate 1421. The vertical plate 1422 is arranged relatively parallel to the connecting section 12. The horizontal plate 1421 is symmetrically provided with two bolt holes 143 along the width direction of the cantilever 11, and bolts 15 for fixing are respectively provided in the bolt holes 143. In actual use, the positioning plate 14 is moved along the T-shaped slide groove 112 by the T-shaped slider 141, so as to adjust the distance between the vertical plate 1422 and the connecting section 12, so as to meet the needs of containers 5 with upper edges of different thicknesses. The side of the connecting section 12 facing the vertical plate 1422 abuts against the outer wall of the container 5, and the side of the vertical plate 1422 facing the connecting section 12 abuts against the inner wall of the container 5, and then the positioning plate 14 is locked by the bolt 15 to achieve positioning.

[0048] During actual measurement, the weight device 4 drives the probe 3 at the lower end of the conductor 21 downward by retracting and unreeling the conductor 21. The length of the conductor 21 is greater than the depth of the container 5, leaving sufficient length for retraction. The conductor 21 is insulated. In actual use, the conductor 21 can be retracted and unreeled by means of a retracting and unreeling reel, for example, provided on the cantilever 11.

[0049] like Figure 6 — Figure 9 As shown, the weight device 4 has through-holes extending through its upper and lower ends. The probe 3 is fixedly mounted in the through-holes, with the lower end of the probe 3 extending beyond the bottom of the through-hole. In actual use, the weight device 4 can be made of an insulating material, such as rubber or plastic. The overall shape of the probe 3 matches the through-holes. The probe 3 adopts a cylindrical structure and an interference fit between the probe 3 and the weight device 4. This structure allows the weight device 4 to be replaced with different weights as needed.

[0050] In actual use, the weight device 4 can have a cylindrical, square, or conical shape. In this embodiment, the weight device 4 adopts a conical structure. This technical measure can reduce resistance compared to cylindrical or square shapes, increase the sinking speed of the weight device 4, and thus increase the sinking speed of the probe 3 driven by the weight device 4.

[0051] In actual use, the weight device 4 is an adjustable weight device 4. This technical measure facilitates the flexible adjustment of the weight device 4 as needed during use, compared to a fixed weight device 4. When the weight device 4 is an adjustable weight device 4, the scope of use of the weight device 4 is expanded, making it applicable to the determination of liquid level boundaries of liquids with different relative densities. At the same time, when adjusting the weight of a fixed weight device 4, the weight device 4 needs to be separated from the probe 3. With an adjustable weight device 4, the weight can be adjusted directly according to the needs, without having to separate the weight device 4 from the probe 3. Therefore, this technical measure has the advantage of being able to flexibly adjust the weight of the weight device 4, thus having a wide range of applications.

[0052] Specifically, the weight device 4 includes a shell 41, a cover 42, a hollow tube 43 and a weight (not shown in the figure). The shell 41 is a conical shell with an open upper end; the cover 42 is used to close the upper end opening of the shell 41, and the shell 41 and the cover 42 are detachably connected; an opening is provided at the center of the lower end of the shell 41; the height of the hollow tube 43 is equal to the height from the lower end of the cover 42 to the lower end of the shell 41; the lower end of the hollow tube 43 is fixed at the opening of the shell 41; a circular through hole 421 is provided at the center of the cover 42 to match the opening; the weight is placed in the cavity between the shell 41 and the hollow tube 43; when the cover 42 is connected to the shell 41, the hollow tube 43 forms a through hole through which the probe 3 passes; the probe 3 is a columnar structure with a diameter equivalent to the inner diameter of the hollow tube 43, and its overall height is greater than the height between the upper end surface of the cover 42 and the lower end surface 41 of the shell. In actual use, the lower end of the probe 3 will extend outside the housing 41 , so that the lowermost end of the probe 3 extends out of the bottom of the through hole.

[0053] In actual use, the shell 41, cover 42 and hollow tube 43 of the weight device 4 are all made of insulating material. The shell 41 and the hollow tube 43 can adopt an integrally molded structure. The diameter of the circular through hole 421 at the center of the cover 42 is equivalent to the inner diameter of the hollow tube 43, which is smaller than the outer diameter of the hollow tube 43. The outer diameter of the cover 42 is slightly larger than the inner diameter of the upper opening of the shell 41. An interference fit can be adopted between the cover 42 and the shell 41. The probe 3 is a cylindrical structure, and the inner diameter of the hollow tube 43 is slightly smaller than the outer diameter of the probe 3. The probe 3 is interference fit with the hollow tube 43. After the probe 3 is installed, the tip of its lower end slightly exposes the lower end of the hollow tube 43.

[0054] In actual use, weights can be small steel balls, glass balls, ceramic balls, etc.

[0055] In this embodiment, the weights may be glass balls or ceramic beads made of insulating materials.

[0056] The above is a detailed introduction to the technical solutions provided by the embodiments of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A device for detecting the position of a liquid boundary line in an opaque container, characterized in that: It includes a bracket, a conductivity meter and a weight device made of insulating material; The bracket is detachably mounted on the upper edge of the container. The bracket is in a Z-shaped structure and includes a cantilever mounted on the upper end and a placement plate mounted on the lower end. The placement plate is used to place the conductivity meter. One end of the wire of the conductivity meter is connected to the conductivity meter, and the other end thereof extends along the upper side of the cantilever toward the inner side of the container and extends vertically downward at the end of the cantilever, and is connected to the upper end of the probe at the end; The weight device is provided with through holes penetrating the upper and lower ends thereof, the probe is fixedly installed in the through hole, and the lowermost end of the probe extends out of the bottom of the through hole.

2. The device for detecting the position of a liquid boundary line in an opaque container according to claim 1, characterized in that: The wire is an insulated wire.

3. The device for detecting the position of a liquid boundary line in an opaque container according to claim 1, characterized in that: The cantilever at the upper end of the bracket is provided with a wire groove in the middle of the upper side along the length direction of the cantilever.

4. The device for detecting the position of a liquid boundary line in an opaque container according to claim 1, wherein: The weight device has an outer shape of a conical structure that is larger at the top and smaller at the bottom.

5. The device for detecting the position of a liquid boundary line in an opaque container according to claim 4, characterized in that: The weight device includes a shell, a cover, a hollow tube and a weight. The shell is a conical shell with an open upper end; the cover is used to close the upper end opening of the shell, and the shell and the cover are detachably connected; an opening is provided at the center of the lower end of the shell; the height of the hollow tube is equal to the height from the lower end of the cover to the lower end of the shell; the lower end of the hollow tube is fixed at the opening of the shell; a circular through hole matching the opening is provided at the center of the cover; the weight is placed in the cavity between the shell and the hollow tube; when the cover is connected to the shell, the hollow tube forms a through hole through which the probe passes; the probe is a columnar structure with a diameter equivalent to the inner diameter of the hollow tube, and its overall height is greater than the height between the upper end face of the cover and the lower end face of the shell.

6. The device for detecting the position of a liquid boundary line in an opaque container according to claim 5, characterized in that: The shell, cover, hollow tube and weight are all made of insulating materials.

7. The device for detecting the position of a liquid boundary line in an opaque container according to claim 6, characterized in that: The weights are glass balls or ceramic beads.

8. The device for detecting the position of a liquid boundary line in an opaque container according to claim 1 or 3, characterized in that: The bracket includes a connecting section, a cantilever connected to the upper end of the connecting section, and a placement plate connected to the lower end of the connecting section; the bracket also includes an adjustable positioning plate; the positioning plate is arranged on the lower side of the cantilever, and the positioning plate and the connecting section are arranged parallel to each other, and the distance between the two is the thickness of the upper edge of the container.

9. The device for detecting the position of a liquid boundary line in an opaque container according to claim 8, characterized in that: The cantilever is provided with a T-shaped slot along its length and in the middle of its lower side, and the positioning plate includes a T-shaped slider that cooperates with the T-shaped slot and an L-shaped plate fixedly connected to the T-shaped slider; the L-shaped plate includes a vertical plate and a horizontal plate, and the horizontal plate is fixed to the lower end of the T-shaped slider, and the horizontal plate is a square plate, which is arranged parallel to the lower side of the cantilever; the vertical plate is vertically fixed to the lower end of the horizontal plate, and the vertical plate is arranged relatively parallel to the connecting section; the horizontal plate is symmetrically provided with two bolt holes along the width direction of the cantilever, and bolts for fixing are respectively provided in the bolt holes.

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