Throw-in type liquid level meter capable of preventing water flow pressure interference

Abstract

The utility model discloses a throw-in type liquid level meter capable of preventing water flow pressure interference, and relates to the technical field of liquid level meters. Comprising a protective shell, an anti-interference mechanism used for preventing water flow pressure of the liquid level machine is arranged on the protective shell, and a connecting rod is rotationally connected with the telescopic end of an electric push rod through a rotating shaft in a concave frame; the connecting rods rotate through the connecting shafts and the flow guide plates, the flow guide plates are rotationally adjusted on the protective shell through the rotating shafts on the first fixing blocks, the two sets of flow guide plates are located on the two sides of the buffer holes, the angle of the flow guide plates can be adjusted according to the water flow direction, water flow is guided, and the force and frequency of the water flow directly impacting the buffer holes are reduced; the probe of the liquid level meter can be protected, the damage caused by water flow impact is reduced, the stability and accuracy of measurement are improved, and the liquid level meter can better adapt to working environments under different water flow conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid level meter technical field, concretely is a kind of input type liquid level meter of water flow pressure interference prevention. BACKGROUND

[0002] The height of liquid medium in the container is called liquid level, and the instrument for measuring the liquid level is called liquid level meter, which is a kind of material level instrument. The input type liquid level meter is based on the principle that the measured liquid static pressure is proportional to the height of the liquid. It is made of advanced isolation type diffusion silicon sensitive element or ceramic capacitor pressure sensitive sensor. The static pressure is converted into an electrical signal, and then the temperature is compensated and linearly corrected to convert it into a standard electrical signal (usually 4-20 mA / 1-5 VDC). It is a kind of pressure sensor for measuring liquid level.

[0003] The reference patent (publication number: CN207741826U; publication date: 2018-08-17) provides a kind of input type liquid level meter of water flow pressure interference prevention, including: liquid level meter sleeve, the side wall of the liquid level meter sleeve is opened at different heights There are a plurality of rows of through holes, when the liquid level meter is placed in water for water flow pressure test, the side of the liquid level meter sleeve opening through hole is located in the reverse direction of water flow;Liquid level meter probe, set in the liquid level meter sleeve, the liquid level meter probe is a three-dimensional cylindrical stainless steel cylinder core, with diaphragm at the bottom, and is connected to external equipment through wire at the top. A plurality of small holes are provided on the side of the liquid level meter sleeve opposite to the direction of water flow. The water flows through the through holes on the liquid level meter sleeve into the gap between the liquid level meter sleeve and the probe. The water pressure is stable, which can eliminate the water flow pressure interference caused by the swing of the liquid level meter probe or external mechanical work, so that the measurement value is stable and accurate.

[0004] Based on the above-mentioned patent, in order to ensure that the measurement accuracy is not affected when the water flow fluctuates greatly, a sleeve is generally installed outside the probe of the input type liquid level meter, so that the liquid enters the sleeve cavity from the opening on the surface of the sleeve in the opposite direction of the water flow to ensure the stability of the water pressure. However, there is no further water flow guiding effect around the opening, and the liquid directly enters the inside of the shell through the opening, which causes the probe of the liquid level meter to be easily impacted by the water flow, resulting in measurement error. In addition, the adaptability of the liquid level meter to different water flow conditions is poor, and it cannot automatically adjust according to the direction of water flow or pressure change to optimize the measurement performance. Therefore, the utility model provides an input type liquid level meter of water flow pressure interference prevention. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of input type liquid level meter of water flow pressure interference prevention, solve the further diversion of water flow around the opening, directly through the opening into the shell interior, the probe of liquid level meter is vulnerable to the direct impact of water flow, to generate measurement error, and the adaptability of liquid level meter when responding to different water flow conditions is poor, cannot be automatically adjusted according to water flow direction or pressure change, to optimize the problem of measurement performance.

[0006] To achieve the above object, the utility model discloses the following technical schemes to realize: a kind of input type liquid level meter of water flow pressure interference prevention, including protective shell, the protective shell is provided with the anti-interference mechanism for the water flow pressure of liquid level machine, anti-interference mechanism includes:

[0007] Flow guide assembly, including the first fixed block of protective shell side wall fixed connection, the inside of the first fixed block is provided with the flow guide plate of rotation connection by rotating shaft, the flow guide plate is provided as two groups, two groups of flow guide plate are connected by transmission assembly, the side wall of protective shell is fixedly connected with the pusher assembly for the adjustment of flow guide plate;

[0008] Inflow component, including the buffer hole of uniform establishment in the side wall interior of protective shell, the buffer hole is conical structure.

[0009] Preferably, the upper end of the protective shell is fixedly connected with a connecting wire, and the lower end of the connecting wire is electrically connected with a liquid level meter probe.

[0010] Preferably, the outer wall of the liquid level meter probe is fixedly connected with a support ring, and the outer wall of the support ring is fixedly connected with a shock-absorbing spring.

[0011] Preferably, the inner wall of the protective shell is fixedly connected with a fixed rod, and the distal end of the fixed rod is fixedly connected with a net rack.

[0012] Preferably, the transmission assembly includes a connecting shaft provided on the upper end of the flow guide plate, the outer wall of the connecting shaft is rotatably connected with a connecting rod, and one end of the connecting rod is fixedly connected with a concave frame.

[0013] Preferably, the pusher assembly includes a second fixed block fixedly connected with the side wall of the protective shell, the inner wall of the second fixed block is provided with a movable shaft, and the outer wall of the movable shaft is movably connected with an electric push rod.

[0014] Beneficial effects

[0015] The utility model provides a kind of input type liquid level meter of water flow pressure interference prevention.Compared with prior art, it has the following beneficial effects:

[0016] One, the connecting rod is rotatably connected with the telescopic end of the electric push rod through the rotating shaft in the concave frame, then when the electric push rod pushes the connecting rod on the concave frame, the connecting rod rotates with the guide plate through the connecting shaft, the guide plate rotates and adjusts on the protective shell through the rotating shaft on the first fixed block, and the two groups of guide plates are located on the two sides of the buffer hole, so that the guide plate can adjust the angle according to the water flow direction, effectively guide the water flow, reduce the force and frequency of the water flow directly impacting on the buffer hole, help to protect the liquid level meter probe from the damage of water flow impact, improve the stability and accuracy of measurement, and better adapt to different water flow conditions.

[0017] Second, the buffer hole is uniformly arranged in the side wall of the protective shell, and the buffer hole is in a tapered structure, when the water flow passes through the buffer hole, the speed and pressure of the water flow are slowed down due to the gradual reduction of the hole, so that the excessive pressure impact of the water flow on the liquid level meter is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic view of the utility model;

[0019] Figure 2 It is the protective shell sectional structure schematic view of the utility model;

[0020] Figure 3 It is the enlarged connection structure schematic view of B of the utility model;

[0021] Figure 4 It is the buffer hole structure schematic view of the utility model;

[0022] Figure 5 It is the enlarged connection structure schematic view of A of the utility model.

[0023] In the drawing: 1, protective shell; 2, connecting wire; 201, liquid level meter probe; 3, buffer hole; 4, support ring; 401, shock absorbing spring; 402, damping support; 5, fixed rod; 501, net rack; 6, first fixed block; 601, guide plate; 7, connecting shaft; 701, connecting rod; 702, concave frame; 8, second fixed block; 801, movable shaft; 802, electric push rod. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] Please refer to Figures 1-5 The utility model provides a technical scheme: a kind of water flow pressure interference prevention input type liquid level meter, including protective shell 1, and the anti-interference mechanism for the water flow pressure of liquid level machine is provided on protective shell 1, and the anti-interference mechanism includes:

[0026] Flow guide assembly, including the first fixed block 6 that the side wall of protective shell 1 is fixedly connected, the inside of first fixed block 6 is provided with the flow guide plate 601 being rotationally connected by rotating shaft, flow guide plate 601 is provided as two groups, and two groups of flow guide plate 601 are connected by transmission assembly, and the side wall of protective shell 1 is fixedly connected with the pusher assembly for the adjustment of flow guide plate 601;

[0027] Inflow assembly, including the buffer hole 3 that the side wall inside of protective shell 1 is evenly provided, buffer hole 3 is conical structure, when water flow passes through these buffer holes 3, due to the gradual narrowing of channel, the speed and pressure of water flow can be slowed down to a certain extent, so as to avoid excessive pressure impact of water flow on liquid level meter.

[0028] In preferred embodiments, the upper end of the protective shell 1 is fixedly connected with a connecting wire 2, and the lower end of the connecting wire 2 is electrically connected with a liquid level meter probe 201. The connecting wire 2 serves as a connection bridge between the liquid level meter and the control system or display device, responsible for accurately transmitting the electrical signal measured by the liquid level meter to the control system or display device. This is a prior art and will not be described in detail. The outer wall of the liquid level meter probe 201 is provided with a damping assembly connected with the protective shell 1.

[0029] In preferred embodiments, the outer wall of the liquid level meter probe 201 is fixedly connected with a support ring 4, and the outer wall of the support ring 4 is fixedly connected with a damping spring 401. The inside of the damping spring 401 is provided with a damping strut 402. The liquid level meter probe 201 is supported by the support ring 4 on the outer wall of the damping spring 401 and the damping strut 402, which provides a certain damping and buffering support for the protective shell 1. This effectively absorbs and disperses vibrations and impacts from water flow, water pump operation or other external machinery, thereby maintaining the relative stability of the liquid level meter probe 201 in water and better resisting the influence of complex water flow environments such as water flow pressure fluctuations, eddy currents and surges on measurement.

[0030] In preferred embodiments, the inner wall of the protective shell 1 is fixedly connected with a fixed rod 5, and the distal end of the fixed rod 5 is fixedly connected with a net rack 501. The net rack 501 is fixed to the bottom of the protective shell 1 by the fixed rod 5 and is located directly below the liquid level meter probe 201 for protection, which helps to reduce the direct impact of water flow on the liquid level meter probe 201, thereby maintaining the stability of its measurement position. This can effectively block impurities and suspended solids in water from entering the measurement area of the liquid level meter probe 201, providing additional protection for the liquid level meter.

[0031] In the preferred implementation, the transmission assembly includes a connecting shaft 7 arranged at the upper end of the guide plate 601, the outer wall of the connecting shaft 7 is rotatably connected with a connecting rod 701, one end of the connecting rod 701 is fixedly connected with a concave bracket 702, the push assembly includes a second fixed block 8 fixedly connected to the side wall of the protective shell 1, the inner wall of the second fixed block 8 is provided with a movable shaft 801, the outer wall of the movable shaft 801 is movably connected with an electric push rod 802, the connecting rod 701 is rotatably connected with the telescopic end of the electric push rod 802 through the rotating shaft inside the concave bracket 702, then when the electric push rod 802 pushes the connecting rod 701 on the concave bracket 702, the connecting rod 701 rotates the guide plate 601 through the connecting shaft 7, so that the guide plate 601 rotates and adjusts on the protective shell 1 through the rotating shaft on the first fixed block 6, and the two groups of guide plates 601 are located on the two sides of the buffer hole 3, so that the guide plate 601 can adjust the angle according to the water flow direction, effectively guide the water flow, reduce the force and frequency of the water flow directly impacting on the buffer hole 3, help to protect the liquid level meter probe 201 from the damage of water flow impact, improve the stability and accuracy of measurement, and better adapt to different water flow conditions.

[0032] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

[0033] When working, the liquid level meter is located in the interior of the protective shell 1, the buffer holes 3 are evenly arranged in the side wall of the protective shell 1, the buffer holes 3 are in a tapered structure, when the water flow passes through these buffer holes 3, the speed and pressure of the water flow will be slowed down due to the gradual narrowing of the hole, thereby avoiding the excessive pressure impact of the water flow on the liquid level meter, then the connecting rod 701 is rotatably connected with the telescopic end of the electric push rod 802 through the rotating shaft inside the concave bracket 702, then when the electric push rod 802 pushes the connecting rod 701 on the concave bracket 702, the connecting rod 701 rotates the guide plate 601 through the connecting shaft 7, so that the guide plate 601 rotates and adjusts on the protective shell 1 through the rotating shaft on the first fixed block 6, and the two groups of guide plates 601 are located on the two sides of the buffer hole 3, so that the guide plate 601 can adjust the angle according to the water flow direction, effectively guide the water flow, reduce the force and frequency of the water flow directly impacting on the buffer hole 3, help to protect the liquid level meter probe 201 from the damage of water flow impact, improve the stability and accuracy of measurement;

[0034] Finally, the set liquid level meter probe 201 is supported by the support ring 4 of the outer wall, and the shock-absorbing spring 401 and the damping support rod 402 play a certain shock-absorbing and buffering supporting role with the protective shell 1, effectively absorbing and dispersing the vibration and impact generated from the water flow, the water pump operation or other external machinery, thereby keeping the relative stable position of the liquid level meter probe 201 in the water, and the net frame 501 is located directly below the liquid level meter probe 201 for protection, which helps to reduce the direct impact of the water flow on the liquid level meter probe 201, thereby keeping the stability of the measurement position, and can effectively block impurities, suspended solids and the like in the water from entering the measurement area of the liquid level meter probe 201, thereby providing additional protection for the liquid level meter.

[0035] It should be noted that, in this document, relational terms such as first and second and the like can 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. Moreover, 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the changes, modifications, equivalents, substitutions and variations of the embodiments can be made by those skilled in the art without departing from the spirit and principles of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A submersible level gauge resistant to water flow pressure interference, comprising a protective housing (1), characterized in that: The protective housing (1) is provided with an anti-interference mechanism for the level gauge to withstand water flow pressure. The anti-interference mechanism includes: The flow guiding assembly includes a first fixing block (6) fixedly connected to the side wall of the protective shell (1). The first fixing block (6) is provided with a flow guiding plate (601) rotatably connected by a rotating shaft. The flow guiding plate (601) is configured as two sets, and the two sets of flow guiding plates (601) are connected by a transmission assembly. The side wall of the protective shell (1) is fixedly connected with a pushing assembly for adjusting the flow guiding plate (601). The inflow component includes buffer holes (3) evenly opened inside the sidewall of the protective housing (1), the buffer holes (3) having a conical structure.

2. The submersible level gauge with anti-water flow pressure interference according to claim 1, characterized in that: The upper end of the protective shell (1) is fixedly connected to a connecting wire (2), and the lower end of the connecting wire (2) is electrically connected to a level gauge probe (201). The outer wall of the level gauge probe (201) is provided with a shock-absorbing component connected to the protective shell (1).

3. The submersible level gauge with anti-water flow pressure interference according to claim 2, characterized in that: A support ring (4) is fixedly connected to the outer wall of the level gauge probe (201), and a shock-absorbing spring (401) is fixedly connected to the outer wall of the support ring (4). A damping support rod (402) is provided inside the shock-absorbing spring (401).

4. The submersible level gauge with anti-water flow pressure interference according to claim 1, characterized in that: The inner wall of the protective shell (1) is fixedly connected to a fixing rod (5), and the end of the fixing rod (5) is fixedly connected to a mesh frame (501).

5. The submersible level gauge with anti-water flow pressure interference according to claim 1, characterized in that: The transmission assembly includes a connecting shaft (7) provided on the upper end of the guide plate (601), a connecting rod (701) rotatably connected to the outer wall of the connecting shaft (7), and a concave frame (702) fixedly connected to one end of the connecting rod (701).

6. The submersible level gauge with anti-water flow pressure interference according to claim 1, characterized in that: The pushing assembly includes a second fixing block (8) fixedly connected to the side wall of the protective shell (1), the inner wall of the second fixing block (8) is provided with a movable shaft (801), and the outer wall of the movable shaft (801) is movably connected with an electric push rod (802).

Images