CN111982233A

CN111982233A - Self-blockage cleaning mechanism for liquid inlet hole of input type liquid level transmitter

Info

Publication number: CN111982233A
Application number: CN202010503633.XA
Authority: CN
Inventors: 张国蓉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-11-24

Abstract

The invention relates to the technical field of transmitters, and discloses a self-blockage-removing mechanism for a liquid inlet hole of a drop-in liquid level transmitter. According to the invention, as the stress of each plug is f ═ rho ghs, and the length value of the B rod is slightly larger than that of the A rod, when the water inlet hole at the B rod is blocked, the contact area S between the plug at the B rod and the liquid level is reduced, so that the resultant force on the two A rods is larger than that of the B rod, the water inlet hole is blocked by the plug at the B rod through the B rod, and finally, the plug on any one A rod is opened to continue working, so that the detection is not influenced, the impurities at the blocked part are removed, and the phenomenon of automatically removing the blocked impurities is finally achieved.

Description

Self-blockage cleaning mechanism for liquid inlet hole of input type liquid level transmitter

Technical Field

The invention relates to the technical field of transmitters, in particular to a self-blockage removing mechanism for a liquid inlet hole of a drop-in type liquid level transmitter.

Background

The input type liquid level transmitter is a liquid level pressure sensor which is manufactured by adopting an isolation type diffused silicon or ceramic capacitance pressure sensitive sensor based on the principle that the static pressure of a measured liquid is proportional to the height of the liquid, converts the static pressure into an electric signal, and converts the electric signal into a standard electric signal through temperature compensation and linear correction.

Present input formula liquid level changer is at the in-process that uses, need to drop into the bottom of detecting body to the liquid of being surveyed, because some particulate matters in the liquid of being surveyed and flocculent dirt receive the influence of self gravity can deposit to the bottom of being surveyed the liquid, and then make some dirt can lead to the fact certain jam to the inlet opening in the detection subject, cause and detect the phenomenon of inaccurate or can not detect the liquid level, and to the changer jam method of current clearance come out the dirt clearance that blocks up through the shake device of circular telegram, but during the use is efficient with low costs.

Secondly, at the in-process that input formula liquid level changer detected, because not remain gentle state throughout in the liquid that is surveyed, and then detect the in-process that body detected, receive the flow influence of medium to impel the detection body to be in the state that sways all the time, when detecting the liquid level through the detecting element who detects in the body, its detecting element not only receives the pressure of liquid level self height, and the thrust that receives when still can adulterate some movements simultaneously is measured the liquid, and then leads to the numerical value that detects often to be greater than actual numerical value, reduces the accuracy that detects.

And current input liquid level changer mostly sets up detecting element at the top that detects the chamber to make some small particle impurity at the in-process that detects, can pass the inlet opening and flow to detecting the chamber, later through liquid level pressure with impurity attached to detecting element's surface, when gathering a timing, influence its detecting element's that can be great detection performance, and then great reduction accuracy of detecting.

Disclosure of Invention

Aiming at the defects of the prior input type liquid level transmitter in the background technology in the using process, the invention provides a self-cleaning mechanism for a liquid inlet hole of the input type liquid level transmitter, which has the advantages of automatically cleaning up blocking impurities, pressure compensation and improving detection sensitivity and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides an input liquid level changer feed liquor hole is from clear stifled mechanism, includes the detection main part, install water proof piece, processing part, electric cable, detection piece and wire in the detection main part, the inner wall bottom surface center movable mounting who detects the main part has the regulation ball, and the top symmetry fixed mounting of regulation ball has A pole and B pole, and the length of A pole is less than the length of B pole, the equal movable mounting in surface of A pole and B pole has the end cap, the inlet opening with end cap looks adaptation is seted up respectively to the bottom surface of detection main part.

Preferably, the top of the inner wall of the detection main body is fixedly provided with a fixing frame below the processing part, the fixing frame and the inner cavity of the detection main body form a detection cavity, the side wall of the fixing frame is symmetrically provided with detection blocks, and the detection blocks are located in the middle of the detection cavity.

Preferably, the shape of the fixing frame is T-shaped, and the top end of the fixing frame, which is located at the installation part of the detection block, is conical.

Preferably, the number of the rods A is two, and the two rods A and the two rods B are arranged around the adjusting ball at equal angles by taking the central axis of the adjusting ball as the center of a circle.

Preferably, the adjusting ball is in a gourd shape, and one end with larger volume of the adjusting ball is movably installed with the detection main body.

The invention has the following beneficial effects:

1. the invention is provided with the adjusting ball, the A rod, the B rod and the plugs, so that in the process of using the detection main body, because the contact area of the surface of the plug and the detected liquid is the same, the stress of each plug is f ═ rho ghs, and because the length value of the B rod is slightly larger than that of the A rod, the force of the A rod on the adjusting ball is M ═ FL (the length value of the A rod), the force of the B rod on the adjusting ball is M ═ FL (the length value of the B rod), then the resultant force direction of the two A rods is opposite to the stress direction of the B rod through calculation, the magnitude of the resultant force is M ═ FL (the length value of the A rod), and then the comparison with the stress of the B rod can deduce that in the detection process, because the medium density, the pressure, the depth and the contact area under the same atmospheric pressure are equal, the plug at the B rod is opened first, thereby for detecting the liquid level and providing the condition, secondly take place to block up when the inlet opening of B pole department, can make the area of contact S of the end cap of B pole department and liquid level reduce, thereby lead to the atress that the resultant force that receives of two A pole departments is greater than B pole department, and then make the end cap on two A poles open, and plug up the inlet opening with the end cap of B pole department through B pole, the end cap on last arbitrary A pole is opened and is continued work, not only do not influence the detection, still clear away the impurity of jam department simultaneously, finally reach the phenomenon of automatic clearance jam impurity.

2. The detection blocks are symmetrically arranged on the two sides of the fixing frame, so that the stress conditions of the front surface and the back surface of the detection main body subjected to medium movement can be detected in the detection process, the front stress and the back stress are simultaneously taken by the two detection blocks, and the average value is obtained after the difference value of the front stress and the back stress is compared, so that the phenomenon that the detected value is larger than the actual value due to the fact that the detection element is subjected to external thrust is avoided, and the purpose of pressure compensation is finally achieved.

3. According to the invention, the detection block is fixed in the middle of the detection cavity through the fixing frame, so that in the detection process, small particles flowing into the detection cavity push impurities to the top of the detection cavity through the pressure of a medium, and further the impurities are prevented from being attached to the surface of the detection block, so that the detection performance of the detection block is improved, and the purpose of improving the detection sensitivity is finally achieved.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic partial cross-sectional view of the inventive structure;

fig. 3 is a schematic view of a structural regulating ball of the present invention.

In the figure: 1. detecting a subject; 2. a water-insulating block; 3. a processing component; 4. an electrical cable; 5. a detection block; 6. a wire; 7. adjusting the ball; 8. a rod; 9. a B rod; 10. a plug; 11. a fixed mount; 11A and a detection cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a self-cleaning mechanism for a liquid inlet hole of a drop-in liquid level transmitter includes a detection body 1, a water-isolating block 2, a processing component 3, an electrical cable 4, a detection block 5 and a wire 6 are installed on the detection body 1, an adjusting ball 7 is movably installed at the center of the bottom surface of the inner wall of the detection body 1, an a rod 8 and a B rod 9 are symmetrically and fixedly installed at the top of the adjusting ball 7, the length of the a rod 8 is smaller than that of the B rod 9, plugs 10 are movably installed on the surfaces of the a rod 8 and the B rod 9, water inlet holes matched with the plugs 10 are respectively formed in the bottom surface of the detection body 1, in order to solve the problem of blockage, the a rod 8 and the B rod 9 are installed on the adjusting ball 7, the length of the B rod 9 is 1.2 times that of the length of the a rod 8, and the plugs 10 have the same specification and size, so that the plugs 10 on the a rod 8 and the B rod 9 are stressed in a medium as F ρ ghs, and further ensuring that the thrusts of each plug 10 to the a rod 8 and the B rod 9 are equal, and simultaneously, because the length of the B rod 9 is greater than that of the a rod 8, the force moment M of the adjusting ball 7 relative to the a rod 8 is FL (length of the a rod) which is smaller than the moment M of the B rod 9 relative to the adjusting ball 7, and can be pushed out by combining the direction and the magnitude of the moment, when the adjusting ball is placed under the same condition, the plug 10 on the B rod 9 is opened first, and further the medium is caused to flow to the surface of the detecting block 5 through the water inlet hole at the B rod 9 for detection, and finally when the water inlet hole at the B rod 9 is blocked, the contact area between the plug 10 at the B rod 9 and the medium is smaller than that between the plug 10 at the a rod 8 and the medium, so that the a rod 8 can push the adjusting ball 7 to move by the pressure difference of itself, and further the adjusting ball 7 can block the water inlet hole at the B rod 9 from the plug 10, therefore, impurities blocked at the water inlet can be cleaned, the operation can be continued by opening the plug 10 at any A rod 8, when the water inlet hole at the A rod 8 is blocked, the adjusting ball 7 is pushed by the B rod 9, so that the adjusting ball 7 can clear the blockage of the water inlet hole at the A rod 8 through the A rod 8, the operation is repeated, the phenomenon that the water inlet hole is blocked by the impurities to cause the incapability of detection is avoided, meanwhile, the cleaning is carried out through the pressure difference change of the adjusting ball, an external driving power supply is not needed, further, in the operation process of the detection main body 1, if the water inlet hole at the B rod 9 side is suddenly blocked, the plugs 10 at the two A rods 8 can be simultaneously driven to operate, the water inlet hole at the B rod 9 is cleaned, the instantaneity of cleaning blockage is ensured, and the phenomenon that the detection is inaccurate or the liquid level cannot be detected due to untimely cleaning blockage is avoided, meanwhile, the problem that the blockage is difficult to clean due to long-time retention and solidification can be effectively solved.

Wherein, the top of the inner wall of the detection main body 1 is fixedly provided with a fixed mount 11 positioned below the processing component 3, the fixed mount 11 and the inner cavity of the detection main body 1 form a detection cavity 11A, the side wall of the fixed mount 11 is symmetrically provided with detection blocks 5, the detection blocks 5 are positioned in the middle of the detection cavity 11A, the detection cavities 11A are formed by the fixed mount 11 and the inner cavity of the detection main body 1, so that a detection environment can be created for the detection blocks 5, further, the damage to the surface of the detection blocks 5 caused by the bottom of the medium having sharp and other hard impurities is avoided, meanwhile, in order to ensure the accuracy of the detection pressure, the detection blocks 5 are symmetrically arranged at the two sides of the top end of the fixed mount 11, so that in the process of pushing the detection main body 1 by the medium, the stress before and after the movement can be detected by the detection blocks 5 at the same, therefore, the average value is obtained through the difference of the front force and the back force, the phenomenon that the detection value is larger than the actual value due to unidirectional stress is avoided, the compensation of the detection value is finally achieved, and meanwhile the detection accuracy is improved.

Wherein, mount 11's shape is the T shape, and mount 11's top is the toper and is located the installation position that detects piece 5, in order to avoid detecting piece 5 at the in-process surface gathering impurity that detects, thereby through detecting 5 slope installations at the middle part that detects chamber 11A, thereby when medium extrusion detects piece 5 surface, receive gravity and outside pressure variation, impurity that can make in the detection chamber 11A can not last on the surface that detects piece 5, and the shape through mount 11 is the T shape, thereby make some impurity can gather on the top that detects chamber 11A, and then avoid leading to detecting the inaccurate phenomenon of numerical value because of impurity lasts the gathering on the surface that detects piece 5, finally can reach the purpose that improves the precision that detects piece 5.

Wherein, the number of the A rod 8 is two, the two A rods 8 and the two B rods 9 are all arranged around the adjusting ball 7 and at equal angles by taking the central axis of the adjusting ball 7 as the center of a circle, in order to ensure the purpose that the plug 10 automatically cleans impurities, so that the A rods 8 and the B rods 9 are all arranged around the adjusting ball 7 at equal angles, thereby ensuring that when the A rods 8 and the B rods 9 move through pressure difference, only the length relation of the A rods 8 and the B rods 9 is controlled, thereby more easily ensuring the stability of the movement with fewer variables, simultaneously ensuring that the included angle degrees of the A rods 8 and the B rods 9 are the same, thereby ensuring that in the blocking process, the other blocked rod is pushed through the resultant force of the two rods, thereby clearing the water inlet hole on one side of the other rod, further ensuring that when any one water inlet hole is blocked, the received opening driving force is not much different, and because the length of the B rods 9 is 1.2 times that of the A rods 8, therefore, when the inner wall of the detection cavity 11A is filled with a medium, the inner wall is influenced by self gravity, so that the plug 10 at the position of the B rod 9 is closed, the water inlet hole is cleaned, the plug 10 at the position of the A rod 8 is lifted at the same time, the detection cannot be influenced, meanwhile, the A rod 8 and the B rod 9 are installed on the adjusting ball 7 at equal angles, if the A rod 8 and the B rod 9 are deflected in the moving process, the resultant force of any two rods is still positioned on the reverse extension line of the other rod according to the direction of the resultant force, the A rod 8 and the B rod 9 are ensured to act on the adjusting ball 7 through the moment when moving, the stability of the movement is enhanced, and the phenomenon that the plug 10 cannot be opened or closed due to deflection of the adjusting ball 7 is avoided.

Wherein, the shape of adjusting ball 7 is calabash shape, and the great one end of adjusting ball 7 volume and detection main part 1 movable mounting, but in order to realize A pole 8 and B pole 9 free motion to be spherical through adjusting ball 7 and install on detecting main part 1, and then can reach multi-angle rotating's purpose, finally provide the condition for the motion of A pole 8 and B pole 9.

Wherein, A pole 8 and B pole 9 in this application all adopt the light material of the same type to make A pole 8 and B pole 9 except that the gravity moment difference between each other produces the action of knocking, the required moment of gravity of the water pressure overcoming A pole 8 and B pole 9 is less, so that the shallow regional liquid level detection of low density.

The using method of the invention is as follows: firstly, putting a detection main body 1 to the bottom of a medium to be detected, and then:

in the rest state: firstly, a medium enters the detection cavity 11A through the extrusion plug 10 and the plug 10 at one end of the B rod 9, then the detection block 5 is extruded by the medium, the detection block 5 is prompted to transmit an electric signal to the processing component 3 through the lead 6, the signal is processed by the processing component 3 and then is conveyed to a detection device (the detection device is not shown) at the upper end through the electric cable 4, and therefore detection is completed.

In the state of medium fluctuation: at first still extrude end cap 10 of B pole 9 department and get into to detect chamber 11A, later through two detection piece 5 of medium extrusion, and simultaneously, receive the pressure increase that medium fluctuation detection subject 1 can lead to one to detect piece 5, to another detection piece 5 can have obvious power to weaken the phenomenon, pass through two detection piece 5 respectively through wire 6 with signal transmission to processing part 3, pass out the signal to check out test set through processing part 3, check out test set can record two numerical values simultaneously, the contrast, get the average value, thereby accomplish the pressure compensation of medium under the fluctuation state.

In the plugged state: it can know through aforementioned beneficial effect, the end cap 10 of B pole 9 department opens earlier when detecting, later when end cap 10 blocks up, make A pole 8 promote B pole 9 through adjusting ball 7, and then make B pole 9 drive end cap 10 will block up the impurity clearance in the enterprising water hole of detection subject 1, lift up through arbitrary A pole 8 simultaneously, make the inlet opening of A pole 8 department continue to detect, at last when the inlet opening of A pole 8 department is when taking place to block up, promote adjusting ball 7 through B pole 9 again, and then make end cap 10 on the A pole 8 release impurity, so relapse, thereby reach the purpose of impurity automatically cleaning.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a throw into formula liquid level changer feed liquor hole and clear stifled mechanism certainly, includes detection subject (1), install water proof piece (2), processing part (3), electric cable (4), detection piece (5) and wire (6) on the detection subject (1), its characterized in that: inner wall bottom surface center movable mounting who detects main part (1) has adjusting ball (7), and the top symmetry fixed mounting of adjusting ball (7) has A pole (8) and B pole (9), and the length value of A pole (8) is less than the length value of B pole (9), the equal movable mounting in surface of A pole (8) and B pole (9) has end cap (10), the inlet opening with end cap (10) looks adaptation is seted up respectively to the bottom surface that detects main part (1).

2. The self-blockage removing mechanism for the liquid inlet hole of the drop-in liquid level transmitter according to claim 1, wherein the self-blockage removing mechanism comprises: the inner wall top fixed mounting who detects main part (1) has mount (11) that are located processing part (3) below, and mount (11) and the inner chamber of detecting main part (1) constitute and have detection chamber (11A), the lateral wall symmetry of mount (11) is installed and is detected piece (5), and detects the middle part that piece (5) are located detection chamber (11A).

3. The self-blockage removing mechanism for the liquid inlet hole of the drop-in liquid level transmitter according to claim 2, wherein the self-blockage removing mechanism comprises: the shape of the fixing frame (11) is T-shaped, and the top end of the fixing frame (11) is positioned at the mounting part of the detection block (5) and is conical.

4. The self-blockage removing mechanism for the liquid inlet hole of the drop-in liquid level transmitter according to claim 1, wherein the self-blockage removing mechanism comprises: the quantity of A pole (8) is two, two A pole (8) all encircle adjusting ball (7) and use the central axis of adjusting ball (7) as the equal angle installation of centre of a circle with B pole (9).

5. The self-blockage removing mechanism for the liquid inlet hole of the drop-in liquid level transmitter according to claim 1, wherein the self-blockage removing mechanism comprises: the adjusting ball (7) is in a gourd shape, and one end of the adjusting ball (7) with larger volume is movably installed with the detection main body (1).