Dust filter heating device, dust filter and carbon and sulfur analyzer

Abstract

The utility model provides a dust filter heating device, a heating method of the heating device, a dust filter comprising the heating device and a carbon and sulfur analyzer comprising the dust filter, and belongs to the technical field of filters. The heating device comprises a metal net dust filter element, the voltage applying device is used for directly applying voltage to the two ends of the metal net dust filter element so as to directly heat the metal net dust filter element. According to the utility model, voltage is directly applied to the metal net dust filter element through the voltage applying device, and the filter element has certain resistance, so that electric energy can be converted into heat energy, and the temperature of the filter element is increased. The heating mode is more direct and uniform in heating and good in heating effect.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a dust filter heating device, a dust filter including the heating device, and a carbon and sulfur analyzer including the dust filter. Background Technology

[0002] A carbon-sulfur analyzer is a scientific instrument specifically designed for analyzing carbon and sulfur in samples. It typically involves burning the sample in pure oxygen, converting carbon and sulfur into carbon dioxide and sulfur dioxide, respectively, which are then analyzed using infrared absorption. The combustion process takes place in a crucible or a ceramic boat, and the ignition device can be a tube furnace, electric arc furnace, or high-frequency furnace.

[0003] These instruments generate dust during sample combustion. This dust must be removed from the gas being tested by passing it through a dust filter on the carbon-sulfur analyzer before it enters the subsequent gas path. The core component of the dust filter is the filter element, which has a multi-layered sintered metal mesh structure. The outer layer is a support structure, and the inner layer is a filtration structure, ensuring that dust particles larger than a certain size cannot pass through; for carbon-sulfur analyzers, this is typically around 10 micrometers.

[0004] When in use, block one end of the dust filter. The gas carrying dust enters from the inside of the filter (the filter screen side), and the gas that removes the dust flows out from the outside (the support screen side).

[0005] In some cases, dust filters must operate at high temperatures. This is necessary to prevent the formation of liquid water, to prevent dust from adsorbing other substances, and to increase fluidity. For carbon and sulfur analyzers, the primary concern is preventing dust from adsorbing the gas being measured.

[0006] like Figure 1 As shown, the typical heating method currently used is a spring heater, which has a structure consisting of a spiral stainless steel shell that integrates a heating wire and a temperature measuring device.

[0007] When using the spring heater 2, the spring coil is installed on the outside of the metal mesh dust filter element 1 inside the dust filter housing 5, and located inside the dust filter housing 5. To avoid contact with the heating coil when replacing the metal mesh dust filter element, a support 3 is generally used to fix and isolate the spring heater. The lead wire position of the spring heater 2 has a sealing ring groove 4, and a sealing ring is generally installed to ensure airtightness.

[0008] The above methods are quite common. There are also methods that use heating elements, heating rods, or other devices to indirectly heat the filter housing.

[0009] The current heating method is indirect heating, and the heat source is generally located on the outside of the filter element, which is far away from the heated material (usually dust). The heating effect is not direct enough, and higher temperatures may be required to achieve a good heating effect. Utility Model Content

[0010] In view of this, to address the technical problem that existing heating methods are indirect, involving a distance from the heated material (usually dust), resulting in insufficient direct heating and potentially requiring higher temperatures to achieve good heating effects, this invention provides a dust filter heating device. This device directly applies voltage to the metal mesh dust filter element via a voltage application device. Due to the filter element's resistance, electrical energy is converted into heat energy, causing the filter element's temperature to rise. This heating method provides more direct and uniform heating, resulting in better heating performance.

[0011] To achieve the above objectives, this utility model provides the following technical solution:

[0012] A dust filter heating device, comprising:

[0013] Metal mesh dust filter element;

[0014] The voltage application device directly applies voltage to both ends of the metal mesh dust filter core to achieve direct heating of the metal mesh dust filter core.

[0015] Preferably, the voltage application device includes:

[0016] transformer;

[0017] Both ends of the metal mesh dust filter core are in elastic contact with conductive springs connected to the output end of the transformer.

[0018] Preferably, it further includes:

[0019] A temperature sensor is installed in the metal mesh dust filter core to detect the temperature of the metal mesh dust filter core;

[0020] A temperature controller is used to receive the temperature signal transmitted by the temperature sensor and control the voltage applied to the metal mesh dust filter core according to the temperature signal.

[0021] Secondly, this utility model also provides a dust filter, including the aforementioned dust filter heating device.

[0022] Thirdly, this utility model also provides a carbon-sulfur analyzer, including the aforementioned dust filter.

[0023] Compared with the prior art, this utility model has the following beneficial effects:

[0024] The dust filter heating device provided by this utility model applies voltage directly to the metal mesh dust filter element through a voltage application device. Since the filter element has a certain resistance, electrical energy is converted into heat energy, causing the filter element temperature to rise. This heating method provides more direct and uniform heating, resulting in better heating effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a typical heating device.

[0026] Figure 2 A schematic diagram of the heating device provided by this utility model;

[0027] In the diagram, 1. Metal mesh dust filter element; 2. Spring heater; 3. Support component; 4. Sealing ring groove; 5. Dust filter housing; 6. Transformer; 7. Conductive spring; 8. Temperature sensor; 9. Temperature controller. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figure 2 As shown, this utility model provides a dust filter heating device, comprising:

[0032] Metal mesh dust filter element 1;

[0033] A voltage application device applies voltage directly to both ends of the metal mesh dust filter core 1 to achieve direct heating of the metal mesh dust filter core 1.

[0034] This invention applies voltage directly to the metal mesh dust filter core 1 through a voltage application device, thereby achieving direct heating of the metal mesh dust filter core 1. This avoids the problem of existing indirect heating methods, which involve a greater distance from the heated material (usually dust), resulting in insufficient heating and potentially requiring higher temperatures to achieve a good heating effect.

[0035] In this invention, the voltage application device includes:

[0036] Transformer 6;

[0037] The two ends of the metal mesh dust filter core 1 are in elastic contact with the conductive spring 7 connected to the output end of the transformer 6.

[0038] This utility model also includes:

[0039] Temperature sensor 8 is installed in the metal mesh dust filter core 1 to detect the temperature of the metal mesh dust filter core 1;

[0040] The temperature controller 9 receives the temperature signal transmitted by the temperature sensor 8 and controls the voltage applied to the metal mesh dust filter core 1 according to the temperature signal. The temperature controller 9 is connected to the input terminal of the transformer 6, and the temperature controller 9 and the temperature sensor 8 are connected via a signal transmission line or wirelessly. This can be selected according to actual needs.

[0041] Temperature sensor 8 monitors the temperature of the metal mesh dust filter core 1 in real time and transmits the monitored real-time temperature signal to temperature controller 9. Temperature controller 9 determines whether the received temperature signal meets the required heating temperature and controls the voltage application device (transformer 6) to adjust the voltage applied to the metal mesh dust filter core 1. This achieves closed-loop temperature control.

[0042] When the temperature is below the set value, the temperature controller 9 instructs the transformer 6 to increase the output voltage, thereby raising the temperature of the metal mesh dust filter element 1; conversely, when the temperature is above the set value, the temperature controller 9 reduces the output voltage to lower the temperature. This automatic adjustment mechanism ensures that the temperature of the metal mesh dust filter element 1 is always kept within the optimal operating range, guaranteeing filtration efficiency while avoiding potential material damage due to overheating. Furthermore, the heating device of this invention features fast response and high control precision, enabling it to quickly adapt to temperature changes under different operating conditions.

[0043] This utility model also provides a heating method for the above-mentioned dust filter heating device, which uses a voltage application device to directly apply voltage to both ends of the metal mesh dust filter core 1 to achieve direct heating of the metal mesh dust filter core 1.

[0044] This utility model also provides a dust filter, including the above-mentioned dust filter heating device.

[0045] This invention also provides a carbon-sulfur analyzer, including the aforementioned dust filter.

[0046] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. A dust filter heating device, characterized in that, The application relates to a dust filter heating device. The dust filter heating device comprises a metal mesh dust filter core and a voltage applying device. The voltage applying device comprises a transformer and two conductive springs. The two ends of the metal mesh dust filter core are respectively in elastic contact with the two conductive springs connected to the output end of the transformer. The dust filter heating device further comprises a temperature sensor arranged on the metal mesh dust filter core for detecting the temperature of the metal mesh dust filter core and a temperature controller for receiving the temperature signal transmitted by the temperature sensor and controlling the voltage applied to the metal mesh dust filter core according to the temperature signal. The voltage applying device is used for directly applying voltage to the two ends of the metal mesh dust filter core to directly heat the metal mesh dust filter core. The dust filter heating device comprises the dust filter heating device according to claim 1 or 2. The dust filter comprises the dust filter according to claim 3. ​ 2. A dust filter heating device according to claim 1, characterized in that ​ 3. A dust filter, characterized by ​ 4. A carbon sulfur analyzer characterized by, ​

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