Tuning fork densimeter self-cleaning device and tuning fork densimeter thereof

Abstract

The invention discloses a tuning fork densimeter self-cleaning device, and relates to the technical field of tuning fork densimeters, the tuning fork densimeter self-cleaning device comprises a butt joint pipe fitting, the butt joint pipe fitting is provided with a tuning fork densimeter body, the outer side of the tuning fork densimeter body is provided with a densimeter fork body cleaning structure, and the densimeter fork body cleaning structure comprises a fixed pipe; a cleaning cabin is arranged at one end, located on the connecting seat, of the fixing pipe, a lifting pipe is slidably connected in the cleaning cabin, the tuning fork densimeter body is arranged in the lifting pipe, and a linear driving mechanism for lifting the lifting pipe is arranged at the top of the fixing pipe; the invention further provides the tuning fork densimeter, the number of the tuning fork densimeter bodies is two, the densimeter fork body cleaning structures are arranged outside the tuning fork densimeter bodies, and the tuning fork densimeter bodies are symmetrically arranged on the butt joint pipe in a crossed mode. Disassembly-free self-cleaning of the tuning fork densimeter can be achieved, medium deposition on the outer side of the tuning fork densimeter can be avoided, and the detection precision of the tuning fork densimeter is effectively ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of tuning fork densitometers, and in particular relates to a tuning fork densitometer self-cleaning device and a tuning fork densitometer. Background Art

[0002] The tuning fork density meter relies on the piezoelectric crystal located at the root of the fork body to generate vibration. The frequency of the vibration is detected by another piezoelectric crystal. When the medium flows through the fork body, the change in the mass of the medium causes the change in the resonant frequency. Then, through the electronic conversion of the microprocessor, the parameters of the medium, such as density, are obtained. Due to the excellent detection ability of the tuning fork density meter, it is widely used in industries such as food, medicine, desulfurization and denitrification. However, when the tuning fork density meter detects highly viscous and easy-to-dry media, such as starch slurry, dairy products, Chinese medicine preparation slurry, lime slurry and other media. In the case of line shutdown and maintenance, it is easy to cause a layer of medium to solidify on the surface of the fork body of the tuning fork density meter, which seriously affects the accuracy of subsequent detection. It is inconvenient to disassemble and clean the tuning fork density meter, and there is also a risk of damage to the density meter during the disassembly process. For this reason, the market is in urgent need of a tuning fork density meter that does not require disassembly. Summary of the invention

[0003] The purpose of the present invention is to solve the disadvantage of inconvenient disassembly and cleaning in the prior art, and to propose a tuning fork density meter self-cleaning device and a tuning fork density meter. The tuning fork density meter self-cleaning device and the tuning fork density meter can achieve self-cleaning without disassembly, avoid medium deposition on the outside of the tuning fork density meter, and effectively ensure the detection accuracy of the tuning fork density meter.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A tuning fork densitometer self-cleaning device is designed, comprising a butt joint pipe fitting, wherein at least one tuning fork densitometer body for concentration detection is provided on the butt joint pipe fitting, a densitometer fork cleaning structure is provided on the outer side of the tuning fork densitometer body, and a connecting seat for connecting the densitometer fork cleaning structure is provided on the butt joint pipe fitting; the densitometer fork cleaning structure comprises a fixed pipe, wherein the fixed pipe is fixed on the connecting seat, a cleaning chamber is provided at one end of the fixed pipe located at the connecting seat, a lifting pipe is slidably connected to the cleaning chamber in a piston-sealed manner, the tuning fork densitometer body is arranged in the lifting pipe, and the lifting pipe is provided in the lifting pipe. A detection port is provided at the fork position of the tuning fork densitometer body corresponding to the tube, and a linear driving mechanism for lifting the lifting tube is provided on the top of the fixed tube; a liquid inlet pipe and a liquid outlet pipe for forming a cleaning vortex in the fork body are provided on the cleaning cabin, and a cleaning port is provided on one side of the lifting tube corresponding to the liquid inlet pipe; a sealing block for sealing the connecting seat is fixedly provided at the bottom of the lifting tube, and when the lifting tube is in a fully raised state, the sealing block is sealed in the connecting seat to isolate the cleaning cabin from the docking pipe fitting; one side of the fixed tube is connected to an instrument connected to the tuning fork densitometer body through a fixing frame.

[0006] Furthermore, a first sealing sleeve adapted to the sealing block is fixedly provided in the connecting seat, a limiting ring is fixedly provided on the top of the lifting tube, and a second sealing sleeve adapted to the outer diameter of the limiting ring is provided on the inner side of the top of the cleaning chamber.

[0007] Furthermore, the linear drive mechanism includes an electric telescopic rod, a connecting block is fixedly provided on the lifting slider of the electric telescopic rod, the connecting block extends into the fixed tube and is fixedly connected to a connecting rod, and the connecting rod passes through the lifting tube and is connected to the tuning fork densitometer body.

[0008] Furthermore, the tuning fork densitometer body is slidably disposed in a lifting tube, the length of the lifting tube is the same as the length of the cleaning chamber, and a spring is disposed on the top of the tuning fork densitometer body, and the spring is sleeved on the connecting rod.

[0009] Furthermore, a viewing window is provided on one side of the cleaning cabin.

[0010] Furthermore, the liquid inlet pipe is located at the lower part of one side of the cleaning chamber, and the liquid outlet pipe is located at the upper part of the other side of the cleaning chamber. The liquid inlet pipe is located inside the cleaning chamber and is inclined with a spray port. When the tuning fork density meter body is in a fully raised state, the spray port is inclined to the inner side of the corresponding fork body.

[0011] Furthermore, there are two tuning fork densitometer bodies, and a densitometer fork cleaning structure is provided on the outside of the tuning fork densitometer body. The tuning fork densitometer body is cross-arranged on the butt joint fitting in a symmetrical manner. Driven by the linear drive mechanism, the forks of the two tuning fork densitometer bodies can alternately enter the butt joint fitting for uninterrupted detection of the fluid in the butt joint fitting, and the tuning fork densitometer body located inside the densitometer fork cleaning structure is in a cleaning standby state.

[0012] The present invention proposes a tuning fork density meter self-cleaning device and a tuning fork density meter thereof, which has the beneficial effect that: the present invention can realize the self-cleaning of the tuning fork density meter without disassembly, can avoid the medium deposition outside the tuning fork density meter, and effectively ensure the detection accuracy of the tuning fork density meter. Specifically:

[0013] (1) When the production line is shut down for maintenance, the present invention provides a lifting tube that can be raised to drive the tuning fork density meter body to separate from the medium and put it in a sealed state, and completes automatic cleaning of the fork body in the cleaning cabin, which can effectively avoid the medium solidifying on the fork body surface when the line is shut down, thereby ensuring the influence of the solidified medium on the detection accuracy of the tuning fork density meter. When the production line is running, it can be quickly put into use, ensuring the detection accuracy of the tuning fork density meter while not affecting the normal operation of the production line.

[0014] (2) The present invention provides two tuning fork densitometer bodies. When used in a medium with high viscosity and easy precipitation, the two tuning fork densitometer bodies can alternately enter the medium. After the exchange is completed, the replaced tuning fork densitometer body can enter the densitometer fork cleaning structure for self-cleaning and standby, thereby achieving uninterrupted detection of high viscosity and easy precipitation media and ensuring the accuracy of detection parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the present invention in Example 1;

[0017] Figure 2 It is a front view of the present invention in Example 1;

[0018] Figure 3 It is a schematic diagram of the internal structure of the fork cleaning structure of the density meter of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the injection port of the present invention;

[0020] Figure 5 It is a schematic diagram of the tuning fork density meter body in a cleaning state according to the present invention;

[0021] Figure 6 It is a schematic diagram of the eddy current formed in the fork body of the tuning fork densitometer body according to the present invention;

[0022] Figure 7 is a schematic diagram of the three-dimensional structure of the present invention in Example 2;

[0023] Figure 8 It is a front view of the present invention in Example 2;

[0024] The markings in the figure are: 1, butt joint fitting; 11, connecting seat; 12, first sealing sleeve; 2, fixing pipe; 3, tuning fork densitometer body; 31, connecting rod; 32, spring; 4, lifting pipe;

[0025] 41. Inspection port; 42. Sealing block; 43. Cleaning port; 44. Limiting ring; 5. Cleaning chamber;

[0026] 51. Window; 52. Liquid inlet pipe; 53. Liquid outlet pipe; 54. Injection port; 55. Second sealing sleeve; 6. Linear drive mechanism; 61. Lifting slider; 62. Connecting block; 7. Fixed bracket; 8. Instrument. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The structural features of the present invention are now described in detail with reference to the accompanying drawings.

[0031] See also Figure 1-Figure 6 A tuning fork densitometer self-cleaning device includes a butt joint pipe 1, the butt joint pipe 1 is used to connect to a production pipeline, at least one tuning fork densitometer body 3 for concentration detection is provided on the butt joint pipe 1, a densitometer fork cleaning structure is provided on the outer side of the tuning fork densitometer body 3, and a connecting seat 11 for connecting the densitometer fork cleaning structure is provided on the butt joint pipe 1, wherein the densitometer fork cleaning structure includes a fixed pipe 2, the fixed pipe 2 is fixed on the connecting seat 11, and is butt jointed by a flange, and a cleaning chamber is provided at one end of the fixed pipe 2 located at the connecting seat 11 5. For the convenience of cleaning, the diameter of the cleaning chamber 5 is larger than that of the fixed pipe 2. To ensure the strength, the fixed pipe 2 and the cleaning chamber 5 are cast as one piece. A lifting pipe 4 is slidably connected in the cleaning chamber 5 in a piston-sealed manner. The lifting pipe 4 can slide and rise in the cleaning chamber 5 and the connecting seat 11. The tuning fork density meter body 3 is arranged in the lifting pipe 4. The lifting pipe 4 is provided with a detection port 41 at the fork position of the tuning fork density meter body 3. For the convenience of detecting the medium, the fork opening of the tuning fork density meter body 3 and the detection port 41 are arranged perpendicular to the flow direction of the medium.

[0032] A linear drive mechanism 6 for lifting and lowering the lifting tube 4 is provided at the top of the fixed tube 2, wherein the linear drive mechanism 6 comprises an electric telescopic rod, a connecting block 62 is fixedly provided on the lifting slider 61 of the electric telescopic rod, the connecting block 62 extends into the fixed tube 2, and is fixedly connected with a connecting rod 31, and the connecting rod 31 penetrates the lifting tube 4 and is connected to the tuning fork densitometer body 3. The lifting tube 4 can be driven to lift and lower in the cleaning chamber 5 by the linear drive mechanism 6. When it descends to the lowest position, the fork body of the tuning fork densitometer body 3 is inserted into the docking pipe 1 to detect the density and other parameters of the fluid medium in the docking pipe 1. When the lifting tube 4 is raised to the highest position, the fork body of the tuning fork densitometer body 3 is located in the cleaning chamber 5. In order to facilitate the cleaning of the fork body of the tuning fork densitometer body 3, the tuning fork densitometer body 3 is slidably arranged in the lifting tube 4. The length of the lifting tube 4 is the same as that of the cleaning chamber 5. A spring 32 is provided at the top of the tuning fork densitometer body 3, and the spring 32 is sleeved on the connecting rod 31. When the linear drive mechanism 6 lifts the lifting tube 4, the lifting tube 4 and the tuning fork densitometer body 3 can be lifted together through the spring 32. When the lifting tube 4 is lifted to the highest position, it stops lifting due to obstruction, and the linear drive mechanism 6 continues to lift the tuning fork densitometer body 3 on the lifting tube 4, so that sufficient cleaning space is formed at the bottom of the tuning fork densitometer body 3, so that the fork body of the tuning fork densitometer body 3 can be effectively cleaned.

[0033] The cleaning chamber 5 is provided with a liquid inlet pipe 52 and a liquid outlet pipe 53 for forming a cleaning vortex in the fork body. A cleaning port 43 is provided on a side of the lifting tube 4 corresponding to the liquid inlet pipe 52. The liquid inlet pipe 52 is located at the lower part of one side of the cleaning chamber 5, and the liquid outlet pipe 53 is located at the upper part of the other side of the cleaning chamber 5. The liquid inlet pipe 52 is located inside the cleaning chamber 5 and is inclined with a jet port 54. When the tuning fork density meter body 3 is in a fully raised state, the jet port 54 is inclined to correspond to the inner side of the fork body. The water column ejected from the jet port 54 can form a vortex in the fork body of the tuning fork density meter body 3, which can thoroughly clean the sediment in the fork body of the tuning fork density meter body 3 to avoid residual medium sediment.

[0034] A sealing block 42 for sealing the connection seat 11 is fixedly provided at the bottom of the lifting tube 4. When the lifting tube 4 is in a fully raised state, the sealing block 42 is sealed in the connection seat 11 to isolate the cleaning chamber 5 from the butt joint pipe 1. The setting of the sealing block 42 can isolate the butt joint pipe 1 from the cleaning chamber 5 to form an independent cleaning space. In order to facilitate observation of the cleaning condition inside the cleaning chamber 5, a viewing window 51 is provided on one side of the cleaning chamber 5. In order to ensure sealing, a first sealing sleeve 12 adapted to the sealing block 42 is fixedly provided in the connection seat 11, a limiting ring 41 is fixedly provided at the top of the lifting tube 4, and a second sealing sleeve 55 adapted to the outer diameter of the limiting ring 41 is provided on the inner side of the top of the cleaning chamber 5.

[0035] The tuning fork density meter self-cleaning device of the present invention can realize the self-cleaning of the tuning fork density meter without disassembly, avoid the medium deposition on the outside of the tuning fork density meter, and effectively ensure the detection accuracy of the tuning fork density meter. Specifically, when in use, when the production line is stopped for maintenance, the lifting tube 4 that rises through the linear drive mechanism 6 makes the tuning fork density meter body 3 separate from the medium and enter the cleaning cabin 5 to complete the automatic cleaning of the fork body, which can effectively avoid the medium solidifying on the surface of the fork body when the line is stopped, ensuring the influence of the solidified medium on the detection accuracy of the tuning fork density meter. When the production line is running, the tuning fork density meter body 3 after cleaning is quickly sent into the medium through the linear drive mechanism 6, ensuring the detection accuracy of the tuning fork density meter while not affecting the normal operation of the production line.

[0036] Example 2

[0037] Reference Figure 7-Figure 8 As another preferred embodiment of the present invention, this embodiment also proposes a tuning fork densitometer, which adopts the tuning fork densitometer self-cleaning device according to any one of claims 1 to 6, characterized in that the number of tuning fork densitometer bodies 3 is two, and the outside of the tuning fork densitometer body 3 is provided with a densitometer fork cleaning structure, and the tuning fork densitometer body 3 is cross-arranged on the butt joint pipe 1 in a symmetrical manner. Under the drive of the linear drive mechanism 6, the forks of the two tuning fork densitometer bodies 3 can alternately enter the butt joint pipe 1 for uninterrupted detection of the fluid in the butt joint pipe 1, and the tuning fork densitometer body 3 located inside the densitometer fork cleaning structure is in a cleaning standby state, and the fixed tube 2 is connected to the instrument 8 connected to the tuning fork densitometer body 3 through the fixing frame 7. By setting two tuning fork densitometer bodies, when used in a medium with high viscosity and easy precipitation, the two tuning fork densitometer bodies can alternately enter the medium, and after the exchange is completed, the replaced tuning fork densitometer body can enter the densitometer fork cleaning structure for self-cleaning standby, thereby realizing uninterrupted detection of high viscosity and easy precipitation medium, and ensuring the accuracy of the detection parameters.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tuning fork densitometer self-cleaning device, comprising a butt joint pipe (1), wherein at least one tuning fork densitometer body (3) for concentration detection is provided on the butt joint pipe (1), characterized in that: The outer side of the tuning fork densitometer body (3) is provided with a densitometer fork cleaning structure, and the butt joint pipe (1) is provided with a connecting seat (11) for connecting the densitometer fork cleaning structure; The densitometer fork cleaning structure comprises a fixed tube (2), the fixed tube (2) being fixed on a connecting seat (11), a cleaning chamber (5) being provided at one end of the fixed tube (2) located on the connecting seat (11), a lifting tube (4) being slidably connected in a piston-sealed manner in the cleaning chamber (5), the tuning fork densitometer body (3) being arranged in the lifting tube (4), the lifting tube (4) being provided with a detection port (41) at a position of the fork of the tuning fork densitometer body (3), and a linear driving mechanism (6) for lifting and lowering the lifting tube (4) being provided at the top of the fixed tube (2); The cleaning chamber (5) is provided with a liquid inlet pipe (52) and a liquid outlet pipe (53) for forming a cleaning vortex in the fork body, and the lifting pipe (4) is provided with a cleaning port (43) on one side corresponding to the liquid inlet pipe (52); A sealing block (42) for sealing the connecting seat (11) is fixedly provided at the bottom of the lifting tube (4); when the lifting tube (4) is in a fully raised state, the sealing block (42) is sealed in the connecting seat (11), thereby isolating the cleaning chamber (5) from the butt joint pipe (1).

2. A tuning fork density meter self-cleaning device according to claim 1, characterized in that: A first sealing sleeve (12) adapted to the sealing block (42) is fixedly provided in the connecting seat (11), a limiting ring (41) is fixedly provided on the top of the lifting tube (4), and a second sealing sleeve (55) adapted to the outer diameter of the limiting ring (41) is provided on the inner side of the top of the cleaning chamber (5).

3. A tuning fork density meter self-cleaning device according to claim 1, characterized in that: The linear drive mechanism (6) comprises an electric telescopic rod, a connecting block (62) is fixedly provided on a lifting slider (61) of the electric telescopic rod, the connecting block (62) extends into the fixed tube (2) and is fixedly connected to a connecting rod (31), and the connecting rod (31) passes through the lifting tube (4) and is connected to the tuning fork densitometer body (3).

4. A tuning fork density meter self-cleaning device according to claim 3, characterized in that: The tuning fork densitometer body (3) is slidably arranged in a lifting tube (4), the length of the lifting tube (4) is the same as the length of the cleaning chamber (5), and a spring (32) is arranged on the top of the tuning fork densitometer body (3), and the spring (32) is sleeved on the connecting rod (31).

5. A tuning fork density meter self-cleaning device according to claim 1, characterized in that: A viewing window (51) is provided on one side of the cleaning cabin (5).

6. A tuning fork density meter self-cleaning device according to claim 1, characterized in that: The liquid inlet pipe (52) is located at the lower part of one side of the cleaning chamber (5), and the liquid outlet pipe (53) is located at the upper part of the other side of the cleaning chamber (5). The liquid inlet pipe (52) is located inside the cleaning chamber (5) and is provided with an injection port (54) at an angle. When the tuning fork densitometer body (3) is in a fully raised state, the injection port (54) is inclined to correspond to the inner side of the fork body.

7. A tuning fork density meter, using the tuning fork density meter self-cleaning device according to any one of claims 1 to 6, characterized in that: The number of the tuning fork densitometer bodies (3) is two, and a densitometer fork cleaning structure is provided on the outside of each tuning fork densitometer body (3). The tuning fork densitometer bodies (3) are cross-arranged on the butt joint pipe (1) in a symmetrical manner. Under the drive of the linear drive mechanism (6), the forks of the two tuning fork densitometer bodies (3) can alternately enter the butt joint pipe (1) to perform uninterrupted detection of the fluid in the butt joint pipe (1), and the tuning fork densitometer body (3) located inside the densitometer fork cleaning structure is in a cleaning standby state; The fixed tube (2) is connected to a meter (8) connected to the tuning fork density meter body (3) via a fixed frame (7).

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