CN110697271A - Electrode type dustproof charge level indicator - Google Patents

Abstract

The invention provides an electrode type dust-proof material level gauge, comprising: an electrode, a base, a first isolation pipe and a first air inlet hole; the first isolation pipe is sleeved on the outside of the main body of the electrode, so The upper end of the first isolation pipe is airtightly connected to the base, the inner wall of the first isolation pipe and the main body portion define a first airflow channel surrounding the main body portion, and the first airflow channel is along the The axial direction of the first isolation pipe extends to the lower end surface of the first isolation pipe; the first air inlet hole is arranged on the base and communicates with the first air flow channel, and the first air inlet hole It is used for connecting with the air supply device and introducing the air flow into the first air flow channel. The present invention forms a first air flow channel on the outside of the electrode through the arrangement of the first isolation pipe, and the air is supplied through the air supply device to form an air flow isolation layer, thereby preventing dust adhesion, corrosion resistance and high temperature resistance.

Description

An electrode type dust-proof material level meter

technical field

The invention belongs to the technical field of material level measurement, in particular to an electrode type dust-proof material level meter.

Background technique

In the production process of carbon black process, after the carbon black is transported to the powdered carbon black storage tank for storage, it enters the granulator for granulation. The storage amount of carbon black in the powdered carbon black storage tank cannot be continuously measured online. It can perform segmented and hierarchical detection by means of meter or resistance rotary material level meter. Since the carbon black dust is easy to adhere to the electrode and the insulating layer of the level gauge, and the carbon black dust has a certain conductivity, the electrode and the tank body are short-circuited by the adhered carbon black dust, thereby making the electrode invalid. The position of the material in the tank cannot be judged. Therefore, carbon black dust adhering to the electrodes and insulating layers of the level gauge must be cleaned regularly. The insulating layer of the electrode level gauge is easily deformed or cracked by the corrosive gas and high temperature in the storage tank, and it is more difficult to clean the adhering carbon black dust after deformation.

Therefore, in view of the above technical problems, it is necessary to provide a new material level gauge.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an electrode-type dust-proof material level gauge that can effectively prevent dust from adhering, has corrosion resistance and high temperature resistance, so as to solve the problems in the prior art.

In order to achieve the above object, the technical scheme provided by the present invention is as follows:

An electrode type dust-proof material level meter is used to measure the material level of the material filled in the container, including:

an electrode, the electrode comprises a wiring part, a mounting part and a main body part, the wiring part and the main body part are respectively connected to two ends of the mounting part;

a base, the base is provided with a mounting hole, the base is sleeved on the outer side of the electrode through the mounting hole, and the mounting part of the electrode is fixedly connected with the inner wall of the mounting hole;

a first isolation tube, the first isolation tube is sleeved on the outside of the main body of the electrode, the upper end of the first isolation tube is airtightly connected to the base, and the inner wall of the first isolation tube is connected to the main body The first air flow channel is defined and formed to surround the main body portion, and the first air flow channel extends along the axial direction of the first isolation tube to the lower end surface of the first isolation tube;

a first air inlet hole, the first air inlet hole is arranged on the base and communicated with the first air flow channel, the first air inlet hole is used for connecting with the air supply device and introducing the air flow to the in the first airflow channel.

Further, the mounting hole includes a first through hole, a second through hole and a third through hole that are coaxially arranged and connected in sequence, and the inner wall of the first through hole cooperates with the mounting portion to fix the electrode.

Further, the diameter of the second through hole is smaller than the diameter of the third through hole, and the inner wall of the third through hole and the main body define an installation groove for installing the first isolation tube.

Further, the upper end of the first isolation pipe is bent outwards to form an interference portion matched with the top wall of the installation groove, and the interference portion is tightly connected with the top wall of the installation groove through a fixing member.

Further, the fixing member is sleeved on the outer side of the first isolation pipe, and cooperates with the installation groove to fix the first isolation pipe.

Further, the outer side of the first isolation pipe is sleeved with a second isolation pipe, and the upper end of the second isolation pipe is airtightly connected to the base.

Further, a second airflow channel is defined between the second isolation pipe and the first isolation pipe, and a second air inlet hole communicated with the second airflow channel is opened on the side wall of the second isolation pipe, The second air intake hole is used for connecting with an air supply device and introducing air flow into the second air flow channel.

Further, the second airflow channel surrounds the outer side of the first isolation pipe, and extends to the lower end surface of the second isolation pipe along the axial direction of the second isolation pipe.

Further, the wiring portion is located outside the mounting hole, and an outer cover of the wiring portion is provided with a cover that is fixed to the base.

Further, the outer surface of the electrode is provided with a Teflon and/or silica gel coating.

Beneficial effects of the present invention:

Compared with the prior art, the present invention provides a first isolation pipe and a second isolation pipe on the outer side of the electrode by providing the electrode type dust-proof material level gauge to form the first air flow channel and the second air flow channel. After supplying air to the first airflow channel and the second airflow channel, a double-layer isolation airflow layer is formed; the isolation airflow layer can not only prevent dust from adhering to the electrode, but also prevent the corrosive gas in the storage tank from corroding the insulating coating on the outer surface of the electrode. layer; and the purging effect of the air flow can also take away heat to cool down, thereby prolonging the service life of the level gauge.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments described in the present application. , for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic structural diagram of an embodiment of the present application;

Fig. 2 is a partial structural schematic diagram of the embodiment shown in Fig. 1;

FIG. 3 is another partial structural schematic diagram of the embodiment shown in FIG. 1 .

Description of reference numerals: 10, electrode; 11, wiring part; 12, mounting part; 13, main body part; 20, base; 21, first through hole; 22, second through hole; 23, third through hole; 24 30, the first isolation pipe; 31, the interference part; 32, the first airflow channel; 40, the second isolation pipe; 41, the second airflow channel; 42, the second intake hole; 43, Tee pipe; 44, reducing pipe; 50, cover body; 61, gland; 62, gasket; 63, rubber gasket; 64, metal anti-expansion ring.

Detailed ways

The present invention will be described in detail below with reference to the various embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and the structural, method, or functional transformations made by those of ordinary skill in the art based on these embodiments are all included in the protection scope of the present invention.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In the illustrated embodiment, the directional representations, ie, up, down, left, right, front and rear, etc., are relative, and are used to explain that the structure and movement of the various components in this application are relative. These representations are appropriate when the components are in the positions shown in the figures. However, if the description of the positions of elements changes, it is believed that these representations will change accordingly.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIG. 1 , an electrode type dust-proof material level gauge in an embodiment of the present invention includes: an electrode 10 , a base 20 , a cover body 50 , a first isolation pipe 30 and a second isolation pipe 40 .

Referring to FIG. 2, the electrode 10 is made of a corrosion-resistant conductive material. It includes a wiring part 11 , an installation part 12 and a main body part 13 . The wiring part 11 and the main body part 13 are respectively formed by the installation part 12 extending to both ends along its axis, and the outer surface of the installation part 12 is provided with threads. The outer surface of the electrode 10 is provided with an insulating coating completely covering the main body 13 , and the coating is a high temperature resistant Teflon and/or silica gel coating. The lower end of the main body 13 of the electrode 10 can also be connected to or suspended from a conductive component to increase the measurement depth of the level gauge. Specifically, the electrode 10 is made of 36L stainless steel, the length of the electrode 10 is 1.75m, the diameter of the mounting portion 12 of the electrode 10 is 16mm, the diameter of the main body 13 of the electrode 10 is 20mm, and the thickness of the coating is 0.2mm.

The base 20 is provided with mounting holes penetrating through the top and bottom walls. The base 20 is sleeved on the outside of the mounting portion 12 and the main body 13 of the electrode 10 through the mounting holes, and the wiring portion 11 of the electrode 10 is located outside the mounting holes. The mounting hole includes a first through hole 21 , a second through hole 22 and a third through hole 23 that are coaxially arranged and connected in sequence. The diameter of the first through hole 21 is smaller than that of the second through hole 22 , and the The hole diameter is smaller than that of the third through hole 23 . Specifically, the base 20 is made of polytetrafluoroethylene, the length of the base 20 is 80 mm, the diameter of the first through hole 21 is 16 mm, the diameter of the second through hole 22 is 24 mm, and the diameter of the third through hole 23 is 24 mm. is 42mm.

The inner wall of the first through hole 21 is provided with a thread matched with the mounting portion 12 for fixing the electrode 10 on the base 20 . The outer side of the mounting portion 12 of the electrode 10 is sleeved with a sealing gasket that matches the top wall of the second through hole 22 and the top of the main body portion 13 . airtight connection. An annular chamber is defined between the inner wall of the second through hole 22 and the main body 13 of the electrode 10 . On the outer side wall of the base 20 corresponding to the annular chamber, a first air inlet hole 24 is opened through the annular chamber, and the first air inlet hole 24 is used for connecting with an air supply device. An annular installation groove is defined between the inner wall of the third through hole 23 and the main body 13 of the electrode 10 , and the installation groove is used for installing the first isolation tube 30 . Specifically, the air supply device may be an air storage tank, an air compressor, or the like.

The cover body 50 is installed on the base 20, and the inner wall of the cover body 50 and the side wall of the base 20 are provided with matching threads, so that the cover body 50 can be fixed on the base 20 and cover the wiring part 11. outside. The outer wall of the cover body 50 is provided with a wiring hole penetrating into the cover body 50 . Specifically, the manufacturing material of the cover body 50 is polycarbonate.

The upper end of the first isolation pipe 30 is bent outward to form an annular abutting portion 31 that matches with the top wall of the installation groove. The first isolation tube 30 is sleeved on the outer side of the main body portion 13 of the electrode 10 so that the interference portion 31 is in interference with the top wall of the installation groove. The inner wall of the first isolation pipe 30 and the main body portion 13 define and form a first airflow channel 32 surrounding the main body portion 13 . It communicates with the first air intake hole 24 . Specifically, the first isolation tube 30 is a polytetrafluoroethylene tube disposed coaxially with the main body 13 of the electrode 10 , and the inner diameter of the first isolation tube 30 is 22 mm and the thickness is 1 mm.

The outer side of the first isolation pipe 30 is sleeved with fixing parts such as a gland 61 , a backing ring 62 , a rubber gasket 63 and a metal anti-expansion ring 64 which are matched with the installation groove. The metal anti-expansion ring 64 is disposed close to the outer side of the first isolation pipe 30 , the rubber gasket 63 is sleeved on the outer side of the metal anti-expansion ring 64 , and the upper ends of the metal anti-expansion ring 64 and the rubber gasket 63 are close to the first isolation pipe 30 . The abutting portion 31 abuts against, the backing ring 62 abuts against the lower ends of the metal anti-expansion ring 64 and the rubber washer 63 , and the upper end of the gland 61 abuts against the backing ring 62 . The outer surface of the gland 61 and the inner wall of the installation cavity are provided with matching threads. By tightening the gland 61, the rubber gasket 63 and the abutting part 31 are squeezed, so as to realize the sealing of the first isolation tube 30 and the base 20 connect. At the same time, the provision of the metal anti-expansion ring 64 can prevent the rubber gasket 63 from expanding radially after being squeezed, so that the first isolation tube 30 is deformed.

Referring to FIG. 3 , the second isolation pipe 40 is sleeved on the outer side of the first isolation pipe 30 , so that the upper end of the second isolation pipe 40 is tightly connected with the base 20 . The lower end of the second isolation pipe 40 is flush with the lower end of the first isolation pipe 30 . A second airflow channel 41 is defined between the inner wall of the second isolation tube 40 and the first isolation tube 30 to surround the outside of the first isolation tube 30 . The second airflow channel 41 extends along the axis of the second isolation tube 40 to the second The lower end face of the spacer tube 40 . The side wall of the second isolation pipe 40 is provided with a second air intake hole 42 that communicates with the second air flow channel 41. The second air intake hole 42 is used to connect with the air supply device and is configured to be able to introduce air flow into the into the second airflow channel 41 . Specifically, the second isolation pipe 40 is a 304 stainless steel pipe arranged coaxially with the first isolation pipe 30 .

In this embodiment, the second isolation pipe 40 is formed by combining the three-way pipe 43 and the reducing pipe 44 . The lower end of the main pipe of the tee pipe 43 and the upper end of the reducing pipe 44 are fixedly connected by flanges, and the joints between the flange and the tee pipe 43 and the reducing pipe 44 are sealed, for example, by surfacing welding. Sealed. The upper end of the main pipe of the tee pipe 43 is fixedly connected with the lower end of the base 20 through a flange, and the connection is sealed. The branch pipe of the three-way pipe 43 serves as the second air intake hole 42 . Specifically, the tee pipe 43 is made of 304 stainless steel, the inner diameter of the main pipe of the tee pipe 43 is 57mm, and the inner diameter of the branch pipe is 15mm; the reducer is made of 304 stainless steel, the maximum inner diameter of the reducer is 57mm, and the minimum inner diameter is 45mm .

The electrode 10-type dust-proof material level meter provided by the present invention will be further described below in combination with specific usage scenarios.

In use, the material level gauge is vertically installed on the material storage tank, and the lower end of the second isolation pipe 40 is extended into the material storage tank. The first air intake hole 24 and the second air intake hole 42 are respectively connected to the air supply device, the air supply device is turned on, and the air flow is introduced into the first air flow channel 32 and the first air intake hole 24 and the second air intake hole 42 through the first air intake hole 24 and the second air intake hole 42. In the two air flow channels 41, the air pressure is adjusted to not less than 0.005MPa, and the air flow rate is adjusted to not less than 0.2m ³ /h. The air flowing through the first airflow channel 32 and the second airflow channel 41 is outside the main body 13 of the electrode 10 and the first isolation tube 30 respectively, and forms a double-layer isolation surrounding the main body 13 of the electrode 10 and the first isolation tube 30 The airflow layer isolates the dust from the main body portion 13 .

In the present invention, the electrode 10-type dust-proof material level gauge is provided with a first isolation pipe 30 and a second isolation pipe 40 on the outside of the electrode 10 to form a first airflow channel 32 and a second airflow channel 41. The first airflow channel 32 and the second airflow channel 41 supply air (air, nitrogen, carbon dioxide and inert gas, etc.) to form a double-layer isolated airflow layer; under the purging action of the isolated airflow layer, not only can dust be prevented from adhering to the electrode 10, it can also prevent the corrosive gas in the storage tank from corroding the insulating coating on the outer surface of the electrode 10; and the purging effect of the airflow can also take away heat to cool down, thereby prolonging the service life of the level gauge.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. An electrode type dustproof material level meter is used for carrying out material level measurement on materials filled in a container and is characterized by comprising:

the electrode comprises a wiring part, a mounting part and a main body part, wherein the wiring part and the main body part are respectively connected to two ends of the mounting part;

the base is provided with a mounting hole, the base is sleeved outside the electrode through the mounting hole, and the mounting part of the electrode is matched and fixedly connected with the inner wall of the mounting hole;

the first isolation pipe is sleeved outside the main body part of the electrode, the upper end of the first isolation pipe is hermetically connected with the base, the inner wall of the first isolation pipe and the main body part define a first air flow channel surrounding the main body part, and the first air flow channel extends to the lower end face of the first isolation pipe along the axial direction of the first isolation pipe;

the first air inlet hole is arranged on the base and communicated with the first air flow channel, and the first air inlet hole is used for being connected with an air supply device and guiding air flow into the first air flow channel.

2. The level gauge according to claim 1, wherein the mounting hole comprises a first through hole, a second through hole and a third through hole which are coaxially arranged and sequentially connected, and the inner wall of the first through hole is matched and fixed with the mounting part to fix the electrode.

3. The level gauge according to claim 2, wherein the second through hole has a smaller diameter than the third through hole, and an inner wall of the third through hole defines with the main body a mounting groove for mounting the first isolating pipe.

4. The level gauge according to claim 3, wherein the upper end of the first isolation tube is bent outwards to form an interference part matched with the top wall of the installation groove, and the interference part is hermetically connected with the top wall of the installation groove through a fixing part.

5. The level gauge according to claim 4, wherein the fixing member is sleeved outside the first isolation pipe and is matched with the mounting groove to fix the first isolation pipe.

6. The level gauge according to claim 1, wherein a second isolation tube is sleeved outside the first isolation tube, and the upper end of the second isolation tube is hermetically connected with the base.

7. The level gauge according to claim 6, wherein a second air flow channel is defined between the second isolation tube and the first isolation tube, a second air inlet hole communicated with the second air flow channel is formed in a side wall of the second isolation tube, and the second air inlet hole is used for being connected with an air supply device and guiding air flow into the second air flow channel.

8. The level gauge according to claim 7, wherein the second air flow passage surrounds an outside of the first separation tube and extends to a lower end surface of the second separation tube in an axial direction of the second separation tube.

9. The level gauge according to claim 1, wherein the wire connecting portion is located outside the mounting hole, and an outer side of the wire connecting portion is covered with a cover body that is fitted and fixed to the base.

10. The level gauge according to claim 1, wherein the outer surface of the electrode is provided with a teflon and/or silica gel coating.

Images