Ore pulp pool liquid level sensor

Abstract

The utility model relates to the technical field of liquid level sensors, and particularly discloses a liquid level sensor for an ore pulp pool. Comprising a base, insulating sleeves, probes and insulating caps, a plurality of insulating sleeves are vertically arranged at the bottom of the base side by side, the lengths of the insulating sleeves are sequentially increased, the lengths of the last two insulating sleeves are the same, the probes are fixedly arranged in the insulating sleeves in a penetrating mode, one ends of the probes penetrate out of the bottoms of the insulating sleeves, and the other ends of the probes penetrate through the bottom of the base to be arranged in the base. A plurality of insulating caps are fixedly sleeved outside each insulating sleeve, and the insulating caps are arranged at the lower ends of the insulating sleeves close to the extending positions of the probes; the insulating cap is arranged at the lower end of the insulating sleeve, so that ore pulp cannot form a continuous deposition layer, and false alarms caused by conduction of the deposition layer of the ore pulp between the probes are further prevented; furthermore, a spraying head is arranged to continuously spray water to clean the insulating sleeve exposed out of the liquid level, and adhesion and deposition of ore pulp on the outer wall of the insulating sleeve are reduced.

Description

Technical field:

[0001] The utility model relates to the technical field of liquid level sensors, in particular to a slurry pool liquid level sensor. Background technology:

[0002] Conductive liquid level sensors, also known as resistive liquid level sensors, such as a liquid level indicator device with publication number CN216954751U, are equipped with multiple probes for measuring the liquid level of the material. The heights of the probes increase in sequence. These probes are in contact with the liquid being measured, and the liquid level of the material being measured is determined by the detection circuit to determine the conductivity between the probes. It has a simple structure and stable and reliable operation, so it is widely used for liquid level detection in slurry pools.

[0003] Due to the harsh working environment in the slurry pool, the slurry will adhere to the probes. If the probes are not cleaned for a long time, slurry deposits will form between the probes. The deposits between the probes will gradually increase and cause a bridging phenomenon. Due to the high metal content in the slurry, the slurry deposits between the probes will form a short circuit, affecting the normal measurement of the liquid level by the probes. Utility model content:

[0004] The purpose of the utility model is to provide a liquid level sensor for a slurry pool.

[0005] The utility model is implemented by the following technical scheme: a slurry pool liquid level sensor, comprising a base, an insulating sleeve, a probe and an insulating cap, wherein a plurality of insulating sleeves are vertically arranged side by side at the bottom of the base, the lengths of the insulating sleeves increase in sequence and the lengths of the last two insulating sleeves are the same, a probe is fixedly inserted into the insulating sleeve, one end of the probe passes through the bottom of the insulating sleeve and the other end passes through the bottom of the base and is placed in the base, a plurality of insulating caps are fixedly sleeved outside each insulating sleeve, and the insulating cap is placed at the lower end of the insulating sleeve near the position where the probe extends.

[0006] Furthermore, it also includes a sprinkler head. Two sprinkler heads are symmetrically arranged on both sides of each insulating sleeve. The nozzles of the sprinkler heads are arranged obliquely downward toward the insulating sleeve. Each sprinkler head is connected to a water source through a pipeline placed in the base.

[0007] Furthermore, a mounting hole is provided on the base.

[0008] Furthermore, a boss is integrally formed on the upper end of the insulating sleeve, a sealing ring is sleeved outside the insulating sleeve and above the boss, and the upper end of the insulating sleeve is threadedly connected to the base.

[0009] The advantages of the utility model are as follows: by arranging an insulating cap at the lower end of the insulating sleeve, the slurry cannot form a continuous sedimentation layer, thereby preventing the probes from generating false alarms due to the conduction of the slurry sedimentation layer; further, a spray head is provided to continuously spray water to clean the insulating sleeve exposed above the liquid surface, thereby reducing the adhesion and deposition of slurry on the outer wall of the insulating sleeve. Description of the drawings:

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0011] Figure 2 It is a schematic diagram of the local structure of the connection position between the insulating sleeve and the base.

[0012] In the figure: base 1, insulating sleeve 2, probe 3, insulating cap 4, sprinkler head 5, mounting hole 6, boss 201, sealing ring 202. Specific implementation method:

[0013] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0015] like Figure 1 、 Figure 2The figure shows: a slurry pool level sensor, including a base 1, an insulating sleeve 2, a probe 3 and an insulating cap 4. A mounting hole 6 is left on the base 1, and the mounting hole 6 is used to fix the base 1 above the slurry pool. During installation, the length of each probe 3 is set according to the liquid level of the slurry. A plurality of insulating sleeves 2 are vertically arranged side by side at the bottom of the base 1, and a boss 201 is integrally formed on the upper end of the insulating sleeve 2. A sealing ring 202 is sleeved on the outside of the insulating sleeve 2 and above the boss 201. The upper end of the insulating sleeve 2 is threadedly connected to the base 1. The sealing ring 202 is arranged on the boss 201 at the upper end of the insulating sleeve 2 and is pressed tightly against the base 1 to play a sealing and waterproof role to prevent slurry or water from entering the interior of the base 1; the lengths of the insulating sleeves 2 increase successively and the lengths of the last two insulating sleeves 2 are the same. A probe 3 is fixedly penetrated in the insulating sleeve 2, and the probe 3 is sealed with the insulating sleeve 2. In actual manufacturing, the probe 3 and the insulating sleeve 2 can be filled with silicone rubber or epoxy resin glue. The gap between the needle 3 and the insulating sleeve 2 plays a waterproof role; one end of the probe 3 passes through the bottom of the insulating sleeve 2 and the other end passes through the bottom of the base 1 and is placed in the base 1. The probe 3 is generally made of a metal material with good conductivity, preferably stainless steel. The part of the bottom of the probe 3 exposed from the insulating sleeve 2 is in contact with the slurry liquid, and the upper end of the probe 3 is electrically connected to the detection circuit for detecting the liquid level. One of the two longest ones is used as the common end of the other probes 3. The probe 3 serving as the common end is usually placed at the lowest liquid level position in the slurry pool and contacts the liquid level first. When the liquid level rises, the liquid level submerges the probe 3 at the corresponding position. The probe 3 at this position and the probe 3 at the common end are both in contact with the slurry. Since the resistivity of the slurry is lower than that of the air, the detection circuit detects that the resistivity between the probe 3 at this position and the probe 3 at the common end decreases, which means that the liquid level has reached this position, and a signal can be sent to indicate the liquid level. The specific structure and working principle of the above-mentioned detection circuit are existing technology and are not described in detail.

[0016] A plurality of insulating caps 4 are fixedly sleeved on the outside of each insulating sleeve 2. The insulating caps 4 are placed at the lower end of the insulating sleeve 2 near the position where the probe 3 extends. The insulating caps 4 are umbrella-shaped. When the ore slurry splashes onto the outer wall of the insulating sleeve 2, ore slurry deposits will be formed over a long period of time. When the deposits on the outer wall of the insulating sleeve 2 become thicker and thicker, an integral ore slurry deposit will be formed on the outer walls of the two adjacent insulating sleeves 2. The resistivity of the ore slurry deposit is also relatively high, forming a conductive layer. Therefore, it will conduct the two adjacent probes 3, resulting in a false alarm of the liquid level. After the insulating caps 4 are set, the ore slurry deposits will be layered by the insulating caps 4 after splashing onto the outer wall of the insulating sleeve 2, and the umbrella-shaped insulating caps 4 are not easy to form continuous ore slurry deposits, thereby blocking the problem of false alarms caused by ore slurry deposits.

[0017] In order to reduce the deposition of slurry on the outer wall of the insulating sleeve 2 to form a conductive layer, two spray heads 5 are symmetrically provided on both sides of each insulating sleeve 2. The nozzles of the spray heads 5 are arranged obliquely downward toward the insulating sleeve 2. Each spray head 5 is connected to a water source through a pipeline placed in the base 1. The water source can use the on-site cleaning water source. The spray head 5 continuously sprays water on the insulating sleeve 2. Under the action of surface tension, the water flow flushes downward along the outer wall of the insulating sleeve 2 to form a layer of clean water. When slurry splashes onto the insulating sleeve 2, it will be immediately washed down by the clean water, reducing the formation of slurry deposits and maintaining the cleanliness of the insulating sleeve 2 and the probe 3. It should be noted that the flushing water flow disperses and falls downward after encountering the insulating cap 4, so it will not cause the probes 3 under the insulating cap 4 to be conductive with each other due to the cleaning water flow, resulting in false alarms.

Claims

1. A slurry pool level sensor, characterized in that: The invention comprises a base (1), an insulating sleeve (2), a probe (3) and an insulating cap (4); a plurality of insulating sleeves (2) are arranged vertically and side by side at the bottom of the base (1); the lengths of the insulating sleeves (2) increase in sequence and the lengths of the last two insulating sleeves (2) are the same; a probe (3) is fixedly inserted into the insulating sleeve (2); one end of the probe (3) extends out from the bottom of the insulating sleeve (2) and the other end passes through the bottom of the base (1) and is placed in the base (1); a plurality of insulating caps (4) are fixedly sleeved outside each insulating sleeve (2); the insulating caps (4) are placed at the lower end of the insulating sleeve (2) near the position where the probe (3) extends out.

2. A slurry pool level sensor according to claim 1, characterized in that: It also includes a spray head (5), two spray heads (5) are symmetrically arranged on both sides of each insulating sleeve (2), the nozzles of the spray heads (5) are arranged obliquely downward toward the insulating sleeve (2), and each spray head (5) is connected to a water source through a pipeline arranged in the base (1).

3. A slurry pool level sensor according to claim 2, characterized in that: A mounting hole (6) is provided on the base (1).

4. A slurry pool level sensor according to claim 3, characterized in that: A boss (201) is integrally formed on the upper end of the insulating sleeve (2), a sealing ring (202) is sleeved outside the insulating sleeve (2) and above the boss (201), and the upper end of the insulating sleeve (2) is threadedly connected to the base (1).

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