Device for detecting air tightness of filter cartridge for dust remover

Abstract

A filter cartridge support is vertically mounted on a filter cartridge mounting plate in the dust remover, a filter cartridge is sleeved outside the filter cartridge support, a first end of the filter cartridge is close to the filter cartridge mounting plate, a second end of the filter cartridge is close to the outside of the dust remover, the first end of the filter cartridge is hermetically connected through a filter cartridge sealing ring, and the second end of the filter cartridge is close to the outside of the dust remover. The second end of the filter cartridge is hermetically connected through a filter cartridge cover sealing ring; the sealing detection meter is installed at the first end or / and the second end of the filter cartridge in a sealed mode, when the filter cartridge is installed in the dust remover, the filter cartridge sealing ring and the filter cartridge cover sealing ring are extruded to deform, and the sealing detection meter is used for monitoring the deformation quantity of the filter cartridge sealing ring or / and the filter cartridge cover sealing ring in real time. The display instrument is connected to the sealing detection meter and used for displaying a deformation value detected by the sealing detection meter, and when the deformation value of the sealing detection meter is within a normal value range, the sealing performance of the filter cartridge is qualified.

Description

Technical Field

[0001] The present invention relates to the airtightness detection of a dust collector, and particularly to a filter cartridge airtightness detection device for a dust collector. Background Art

[0002] A filter cartridge dust collector is a common industrial dust removal device, and its main function is to filter out dust particles in the air through a filter cartridge, so as to achieve the purpose of purifying the air. The filter cartridge is a key component of the filter cartridge dust collector, and its performance and technical requirements directly affect the working effect of the entire dust collector. Among them, the airtightness of the filter cartridge is one of the important performances that determine its filtering effect. Poor airtightness of the filter cartridge will cause external humid air or dust to enter the inside of the filter cartridge. These moisture and dust accumulate inside the filter cartridge, which is likely to cause the filter cartridge to become blocked, affecting the dust removal effect; poor airtightness of the filter cartridge may also cause air leakage, resulting in a decrease in the air suction volume of the dust collector, thereby affecting the overall dust removal performance; poor airtightness of the filter cartridge will also cause damage to other components inside the equipment after long-term use, thus shortening the service life of the entire dust collector.

[0003] The filter cartridge of the filter cartridge dust collector is fixedly installed on the housing flower plate of the dust collector through a filter cartridge support, a sealing ring, and a filter cartridge cover, and is located inside the equipment. The internal situation of the filter cartridge cannot be observed from the outside of the dust collector. Therefore, the sealing performance of the filter cartridge cannot be confirmed when installing the sealing cover. At present, in the industry, auxiliary tools are mostly used to ensure that the filter cartridge is perpendicular to the filter cartridge mounting plate during installation, so as to indirectly ensure the airtightness of the filter cartridge, but the sealing reliability of the filter cartridge installation cannot be measured and guaranteed. Therefore, a filter cartridge airtightness detection device for a dust collector is needed to monitor whether the airtightness of the filter cartridge meets the requirements during the installation of the filter cartridge. Summary of the Invention

[0004] The present invention is a filter cartridge airtightness detection device for a dust collector proposed to solve the problem that the airtightness of the filter cartridge cannot be monitored during installation at present, and thus the sealing reliability of the filter cartridge installation cannot be guaranteed.

[0005] An airtightness detection device for a filter cartridge used in a dust collector according to an embodiment of the present invention includes a filter cartridge mounting plate, a filter cartridge support, a filter cartridge, a filter cartridge seal ring, a filter cartridge cover, a filter cartridge cover seal ring, a seal detection gauge, and a display instrument; the filter cartridge mounting plate is installed inside the dust collector, the filter cartridge support is vertically installed on the filter cartridge mounting plate, the filter cartridge is sleeved outside the filter cartridge support, the filter cartridge is perpendicular to the filter cartridge mounting plate under the support of the filter cartridge support, the filter cartridge includes opposite first and second ends, the first end is close to the filter cartridge mounting plate, the second end is close to the outside of the dust collector, a ring of filter cartridge seal ring is installed between the first end of the filter cartridge and the filter cartridge mounting plate, and a ring of filter cartridge cover seal ring is installed between the second end of the filter cartridge and the filter cartridge cover; the seal detection gauge is hermetically installed at the first end and / or the second end of the filter cartridge. When the filter cartridge is installed in the dust collector, the filter cartridge seal ring and the filter cartridge cover seal ring are deformed by extrusion. The seal detection gauge is used to monitor the deformation amount of the filter cartridge seal ring and / or the filter cartridge cover seal ring in real time. The display instrument is connected to the seal detection gauge and is used to display the deformation value detected by the seal detection gauge. When the deformation value of the seal detection gauge is within the normal value range, the airtightness of the filter cartridge is qualified.

[0006] Accordingly, according to the connection structure of the filter cartridge dust collector and the characteristics during the installation of the filter cartridge, a seal detection gauge is installed at any one end of the two ends of the filter cartridge, or at both ends of the filter cartridge. The seal detection gauge is used to measure the deformation amount of the filter cartridge seal ring at the installation position of the first end of the filter cartridge and / or the deformation amount of the filter cartridge cover seal ring at the installation position of the second end of the filter cartridge. It can monitor the deformation amount of the end seal ring of the filter cartridge in real time and accurately during the installation of the filter cartridge. By monitoring whether the deformation amount of the filter cartridge seal strip or the filter cartridge cover seal strip is within the preset normal value range, it can quickly and accurately determine whether the airtightness of the filter cartridge installation is qualified from the external display instrument during the installation, reduce the probability of unqualified airtightness of the filter cartridge installation, and at the same time, it can continue to monitor the airtightness of the filter cartridge installation during the normal operation after the dust collector is installed, ensuring the use effect of the dust collector.

[0007] According to an exemplary embodiment of the present invention, the seal detection gauge includes a gauge head main body, a telescopic probe, a return spring, and a seal. The telescopic probe is installed at the front end of the gauge head main body. A seal is installed between the telescopic probe and the front end of the gauge head main body to maintain sealing. The return spring is installed inside the gauge head main body and on the telescopic probe. When the telescopic probe is subjected to an external force, it retracts into the gauge head main body. When the external force acting on the telescopic probe disappears, it extends out of the gauge head main body and resets under the action of the return spring. When the telescopic probe expands and contracts at the front end of the gauge head main body, the seal always maintains sealing with the telescopic probe.

[0008] Accordingly, while the reset spring prompts the telescopic probe to expand and contract for measurement, the seal detection table ensures that its overall structure is sealed. In particular, a sealing member is installed at the telescopic part at the front end of the telescopic probe and the meter head body to maintain the sealing performance when the telescopic probe expands and contracts, preventing dust in the dust removal chamber of the dust collector from entering the installation gap between the telescopic probe and the meter head body, and avoiding problems such as telescopic jamming of the telescopic probe due to dust blockage and friction, which would affect the measurement accuracy of the deformation amount.

[0009] According to an exemplary embodiment of the present invention, when the seal detection table is used to detect the deformation amount of the filter cartridge seal ring, the front end of the meter head body is sealingly installed on the filter cartridge mounting plate, and the detection tip of the telescopic probe abuts against the first end of the filter cartridge; when the seal detection table is used to detect the deformation amount of the filter cartridge cover seal ring, the front end of the meter head body is sealingly installed on the filter cartridge cover, and the detection tip of the telescopic probe abuts against the second end of the filter cartridge. Accordingly, the seal detection table can be installed at the first end of the filter cartridge or the second end of the filter cartridge, and a more convenient, accurate, and low-cost installation position can be adopted according to the specific structure of the filter cartridge dust collector.

[0010] According to an exemplary embodiment of the present invention, the seal detection table is a pure mechanical meter head, the display instrument is a mechanical pointer dial and is installed at the rear end of the meter head body. The pointer of the display instrument is directly connected to the telescopic probe in a mechanically connected manner, and the telescopic movement of the telescopic probe directly drives the pointer of the display instrument to rotate. Accordingly, by using a seal detection table with a pure mechanical structure, avoiding electronic circuits, in addition to being able to directly and clearly feedback the deformation amount of the filter cartridge seal ring or the filter cartridge cover seal ring, avoiding electronic failures, it can also effectively improve the explosion-proof effect of the dust collector, thereby improving the use safety of the dust collector.

[0011] According to an exemplary embodiment of the present invention, the seal detection table is a remote transmission meter head. A displacement sensor is provided inside the meter head body, the display instrument is arranged outside the dust collector and is signal-connected to the meter head body. The displacement signal of the displacement sensor is transmitted to the display instrument and displayed as the deformation amount after being processed. Accordingly, by using a remote transmission meter head, electronic components such as displacement sensors and connection lines are arranged inside the meter head body, and the front end of the meter head body is kept sealed and isolated from the dust removal chamber through a sealing member, effectively preventing dust in the dust removal chamber from entering the seal detection table, achieving a good explosion-proof effect.

[0012] According to an exemplary embodiment of the present invention, an explosion-proof junction box is sealingly installed at the rear end of the meter head body. Accordingly, the explosion-proof effect of the airtightness detection device applied to the dust collector can be further improved.

[0013] According to an exemplary embodiment of the present invention, the detection tip of the seal detection gauge is vertically abutted against the first end or the second end of the filter cartridge, and the telescopic direction of the telescopic probe is parallel to the axis of the filter cartridge. Accordingly, it can be ensured that the telescopic displacement of the telescopic probe of the seal detection gauge is parallel to the deformation compression direction of the filter cartridge seal ring and the filter cartridge cover seal ring each time the telescopic probe extends and retracts, so that the measured telescopic displacement of the probe is directly equal to the deformation amount of the seal ring, improving the accuracy of the deformation amount measurement, and further improving the measurement accuracy of the sealing performance of the filter cartridge installed in the dust collector.

[0014] According to an exemplary embodiment of the present invention, at least one filter cartridge is installed in the dust removal chamber of the dust collector, and each filter cartridge is equipped with at least one seal detection gauge. Accordingly, all the filter cartridges in the dust collector can be continuously and accurately monitored for their sealing performance, thus ensuring the long-term normal use of the filter cartridge dust collector.

[0015] According to an exemplary embodiment of the present invention, a control system is further included. All the seal detection gauges and all the display instruments are connected to the control system. The control system includes an on-line monitoring and alarm module. When it is detected that the deformation amount of the filter cartridge seal ring or the filter cartridge cover seal ring exceeds the set range, the control system will issue an alarm. Accordingly, the operation data of all the filter cartridges in the dust collector and the airtightness detection devices installed thereon can be collected into the control system for centralized control. On this basis, an on-line monitoring and alarm module is equipped. Any abnormal detection data of the seal detection gauge can quickly alarm to remind the worker to check, and the worker can quickly find the corresponding filter cartridge for manual troubleshooting and maintenance.

[0016] According to an exemplary embodiment of the present invention, when multiple seal detection gauges are assembled on the first end or the second end of the filter cartridge, the seal detection gauges located at the same end are evenly distributed and installed. Accordingly, multi-point detection of the end sealing performance of the filter cartridge can effectively avoid the situation that the seal ring is unevenly squeezed and deformed, resulting in one point being sealed in place, another point not being compressed in place, and the seal being unqualified, etc., making the detection result more accurate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Overcome the defect that when installing the filter cartridge in the dust collector, the specific situation of the filter cartridge installation part inside cannot be observed from the outside of the dust collector, and the sealing performance of the filter cartridge cannot be confirmed when installing the sealing cover. Use the seal detection gauge to measure the deformation amount of the filter cartridge seal ring and the filter cartridge cover seal ring. By comparing whether the deformation amount is within the normal value unit, quickly judge whether the filter cartridge is qualified in terms of sealing performance during installation or use. The device is small in volume, flexible and convenient to install, and can accurately detect the airtightness of the filter cartridge without affecting the installation and use of the filter cartridge.

[0018] 2. By measuring the deformation of the filter cartridge sealing ring or the filter cartridge cover sealing ring for airtightness detection, it is not affected by the air pressure change and differential pressure change inside and outside the filter cartridge dust removal chamber of the dust collector, which is more conducive to ensuring the accuracy of the filter cartridge airtightness detection after the dust collector works for a long time.

[0019] 3. The airtightness detection device of the present invention does not need to change the structure and construction of the dust collector too much. Only need to drill holes on the filter cartridge mounting plate or / and the filter cartridge cover to install the seal detection table. It has a small structure and is easy to install. It is suitable for both single-end through filter cartridges and double-end through filter cartridges, with strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Schematic installation structure diagram of a filter cartridge airtightness detection device for a dust collector with seal detection tables installed at both ends of the filter cartridge; Figure 2 Schematic structure diagram with a seal detection table installed at the first end of the filter cartridge; Figure 3 Schematic structure diagram with a seal detection table installed at the second end of the filter cartridge; Figure 4 Front view structure diagram of direct installation of a pure mechanical head type seal detection table and a mechanical pointer dial type display instrument; Figure 5 Left view structure diagram of direct installation of a pure mechanical head type seal detection table and a mechanical pointer dial type display instrument; Figure 6 Sectional view in the A-A direction of direct installation of a pure mechanical head type seal detection table and a mechanical pointer dial type display instrument; Figure 7 Front view structure diagram of adding an explosion-proof junction box to a remote transmission head type seal detection table; Figure 8 Left view structure diagram of adding an explosion-proof junction box to a remote transmission head type seal detection table; Figure 9 Sectional view in the B-B direction of adding an explosion-proof junction box to a remote transmission head type seal detection table.

[0022] Among them, there are a filter cartridge mounting plate 1, a filter cartridge support 2, a filter cartridge 3, a filter cartridge sealing ring 4, a filter cartridge cover 5, a filter cartridge cover sealing ring 6, a seal detection meter 7, a display meter 8, and a control system 9; a first end 31, a second end 32; a meter head body 71, a telescopic probe 72, a return spring 73, a seal 74, an explosion-proof junction box 75, a T-shaped structural member 76, and the front end 711 of the meter head body. Detailed implementation manners

[0023] To further understand the purpose, structure, features, and functions of the present invention, specific embodiments of the present invention will be described in detail in this part. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation to the protection scope of the present invention.

[0024] In the description of the present invention, the orientation or positional relationship indicated by terms such as "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0025] In the description of the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the technical field can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0026] Reference Figures 1 - 3, the present invention provides a filter cartridge airtightness detection device for a dust collector, including a filter cartridge mounting plate 1, a filter cartridge support 2, a filter cartridge 3, a filter cartridge sealing ring 4, a filter cartridge cover 5, a filter cartridge cover sealing ring 6, a sealing detection gauge 7, and a display instrument 8; the filter cartridge mounting plate 1 is installed inside the dust collector, the filter cartridge support 2 is vertically installed on the filter cartridge mounting plate 1, the filter cartridge 3 is sleeved outside the filter cartridge support 2, the filter cartridge 3 is perpendicular to the filter cartridge mounting plate 1 under the support of the filter cartridge support 2, the filter cartridge 3 includes an opposite first end 31 and a second end 32, the first end 31 is close to the filter cartridge mounting plate 1, the second end 32 is close to the outside of the dust collector, a circle of filter cartridge sealing ring 4 is installed between the first end 31 of the filter cartridge 3 and the filter cartridge mounting plate 1, and a circle of filter cartridge cover sealing ring 6 is installed between the second end 32 of the filter cartridge 3 and the filter cartridge cover 5; the sealing detection gauge 7 is hermetically installed at the first end 31 or / and the second end 32 of the filter cartridge 3. When the filter cartridge 3 is installed in the dust collector, the filter cartridge sealing ring 4 and the filter cartridge cover sealing ring 6 are deformed by extrusion. The sealing detection gauge 7 is used to monitor the deformation amount of the filter cartridge sealing ring 4 or / and the filter cartridge cover sealing ring 6 in real time. The display instrument 8 is connected to the sealing detection gauge 7 and used to display the deformation value detected by the sealing detection gauge 7. When the deformation value of the sealing detection gauge 7 is within the normal value range, the airtightness of the filter cartridge 3 is qualified.

[0027] At least one filter cartridge 3 is installed in the dust removal chamber inside the dust collector. The first end 31 of the filter cartridge 3 is installed on the filter cartridge mounting plate 1 inside the dust collector, and the sealing installation effect is achieved through the filter cartridge sealing ring 4. The second end 32 of the filter cartridge 3 is installed on the filter cartridge cover 5, and the sealing installation effect is achieved through the filter cartridge cover sealing ring 6. The installation tightness of the filter cartridge 3 is achieved by, when finally installing the filter cartridge cover 5, squeezing the whole filter cartridge 3 towards the side of the filter cartridge mounting plate 1, so that both the filter cartridge sealing ring 4 and the filter cartridge cover sealing ring 6 are squeezed and deformed, thus achieving the sealing effect at both ends. Therefore, if the tightness of the filter cartridge 3 is to be ensured, it is necessary to ensure that the whole circle of the filter cartridge sealing ring 4 and the filter cartridge cover sealing ring 6 receives uniform and sufficient extrusion. First, in the present invention, a filter cartridge support 2 is vertically installed on the filter cartridge mounting plate 1. The filter cartridge 3 mounting frame is used as an auxiliary installation tool for the filter cartridge 3. When the filter cartridge 3 is installed, it is sleeved on the filter cartridge 3 mounting frame, which can ensure that the filter cartridge 3 is perpendicular to the filter cartridge mounting plate 1, so that the surface of the second end 32 of the filter cartridge 3 is parallel to the filter cartridge mounting plate 1. When the filter cartridge 3 is installed under external force, the filter cartridge sealing ring 4 can be uniformly stressed and the deformation amount of one circle remains the same, thus avoiding the unqualified air tightness caused by the skew installation of the filter cartridge 3. The same applies to the filter cartridge cover 5 and the filter cartridge 3, ensuring that the filter cartridge cover sealing ring 6 is uniformly stressed and squeezed for sealing. On this basis, in the present invention, a seal detection gauge 7 is provided at the first end 31 and / or the second end 32 of the filter cartridge 3. The seal detection gauge 7 is used to measure the deformation amount of the filter cartridge sealing ring 4 at the first end 31 or the filter cartridge cover sealing ring 6 at the second end 32 after being squeezed. When the deformation amount is within the normal range, the tightness of the filter cartridge 3 is qualified; when the deformation amount is lower than the normal value range, it means that the deformation amount of the sealing ring is insufficient and the extrusion force received by the sealing ring is not in place, and there may be a situation of insufficient tightness; when the deformation amount is higher than the normal value range, it means that the deformation amount of the sealing ring is too large and the extrusion force on the sealing ring is too large, which may affect the elastic recovery ability of the sealing ring and cause the sealing ring to be permanently deformed after long-term use, thus affecting the installation tightness of the filter cartridge 3.

[0028] In the above technical solution, the purpose of detecting the tightness of the installation of the filter cartridge 3 is to ensure that the dust removal chamber where the filter cartridge 3 is located is in a sealed state with the chamber below and the chamber above, and the dust-containing air flow can only enter the chamber above or below through the filtering side of the filter cartridge 3, so as to ensure the dust removal effect; therefore, when the seal detection gauge 7 is installed, it is necessary to ensure its installation tightness. Whether it is the installation connection between the seal detection gauge 7 and the dust collector or the telescopic gap of the detection head of the seal detection gauge 7, strict sealing needs to be ensured.

[0029] In addition, since a certain working air pressure needs to be maintained between the dust filter chambers where the filter cartridges 3 are located, a certain pressure difference also needs to be maintained between the dust removal chamber and the adjacent upper and lower chambers. Moreover, as the dust collector operates for a long time, the normal air pressure in the chamber and the normal working pressure difference between the filter chamber and the adjacent chambers will also change. For example, as the working time of the filter cartridge 3 increases, component wear or incomplete dust cleaning will cause the working air pressure and the pressure difference to increase. Therefore, when detecting the installation airtightness of the filter cartridge 3 in the present invention, it is no longer possible to detect the installation airtightness of the filter cartridge 3 by measuring the air pressure or the pressure difference. Instead, the deformation amount of the sealing ring, which is a variable whose normal value range is not affected by the working duration, is used as the detection target, which is more conducive to ensuring the accuracy of the airtightness detection of the filter cartridge 3 after the dust collector has operated for a long time.

[0030] In some embodiments, the filter cartridge mounting plate 1 can be the shell ceiling plate of the filter cartridge 3, which is arranged perpendicular to the horizontal plane, so that all the filter cartridges 3 are horizontally installed; in other embodiments, the filter cartridge mounting plate 1 can be arranged obliquely to the horizontal plane, and the filter cartridges 3 are obliquely installed inside the dust removal chamber of the dust collector. Correspondingly, the filter cartridge cover 5 refers to a component that is parallel to the second end 32 of the filter cartridge 3 and is fixedly installed on the dust collector, and is not limited to the cover body that is parallelly installed on the outer shell of the dust collector for encapsulating the filter cartridge 3.

[0031] The airtightness detection device of the present invention does not need to change the structure and construction of the dust collector too much. It only needs to drill holes in the filter cartridge mounting plate 1 or / and the filter cartridge cover 5 to install the seal detection gauge 7. It has a small structure and is easy to install. It is applicable to both single-end through filter cartridges 3 and double-end through filter cartridges 3, and has strong applicability.

[0032] The present invention uses the seal detection gauge 7 as the primary instrument and the display gauge 8 as the secondary instrument. The primary instrument is used to directly monitor the deformation amounts of the filter cartridge sealing ring 4 and the filter cartridge cover sealing ring 6. The secondary instrument is used to receive the signal from the primary instrument and directly display the deformation amount outside the dust collector, helping the worker to visually see the detection result from outside the dust collector during installation or inspection, so as to quickly determine whether the installation airtightness of the filter cartridge 3 is qualified.

[0033] Reference Figures 4 - 9, in some embodiments, the seal detection gauge 7 includes a gauge head main body 71, a telescopic probe 72, a return spring 73, and a seal 74. The telescopic probe 72 is installed at the front end 711 of the gauge head main body 71. A seal 74 is installed between the telescopic probe 72 and the front end 711 of the gauge head main body 71 to maintain a seal. The return spring 73 is installed inside the gauge head main body 71 and on the telescopic probe 72. When the telescopic probe 72 is subjected to an external force, it retracts into the interior of the gauge head main body 71. When the external force acting on the telescopic probe 72 disappears, it extends out of the gauge head main body 71 and resets under the action of the return spring 73. When the telescopic probe 72 extends and retracts at the front end 711 of the gauge head main body 71, the seal 74 always maintains a seal with the telescopic probe 72.

[0034] The return spring 73 can be a commercially available return spring 73 of a suitable model. Specifically, it can be selected by actually calculating parameters such as the resilience force and the number of resilience times required for the telescopic movement of the telescopic probe 72. In one embodiment, the return spring 73 is sleeved on the tail end of the telescopic probe 72, and a step is provided at the front end or the rear end of the interior of the gauge head main body 71 such that the return spring 73 abuts against the step to deform and reset, thereby driving the telescopic movement and reset of the telescopic probe 72.

[0035] The telescopic probe 72 extends out and telescopes from the front end 711 of the gauge head main body 71. In one embodiment, the front end 711 of the gauge head main body 71 is a cylindrical tubular structure, with a cylindrical outer shape and a cylindrical inner cavity. A cylindrical mounting hole is drilled in the filter cartridge mounting plate 1 or the filter cartridge cover 5, which is matched in size with the front end 711 of the gauge head main body 71. The front end 711 of the gauge head main body 71 is hermetically assembled in the mounting hole. Further, sealing members 74 such as silicone rubber rings and rubber rings can be provided between the front end 711 of the gauge head main body 71 and the mounting hole to ensure the sealing effect. Preferably, the telescopic probe 72 is provided as a cylinder and installed in the cavity of the front end 711 of the gauge head main body 71. Sealed by the seal 74, the telescopic probe 72 always maintains a seal with the gauge head main body 71 during telescopic movement.

[0036] The seal 74 can be a currently commercially available sealing device, such as a rubber ring, a silicone rubber ring, a sealing plug, etc.

[0037] The seal detection gauge 7 ensures that it is a sealed installation structure as a whole while the retractable probe 72 is extended and retracted by the reset spring 73 for measurement. In particular, the installation seal 74 is used at the telescopic part of the front end 711 of the retractable probe 72 and the gauge head main body 71 to maintain the sealing performance when the retractable probe 72 extends and retracts, preventing the dust in the dust removal chamber of the dust collector from entering the installation gap between the retractable probe 72 and the gauge head main body 71, and avoiding the problem that the retractable probe 72 is stuck due to dust blockage and friction during extension and retraction, which affects the measurement accuracy of the deformation amount. At the same time, the external installation part of the front end 711 of the gauge head main body 71, the internal cavity of the front end 711 of the gauge head main body 71, and the retractable probe 72 are all cylindrical structures, avoiding the use of structural parts with sharp corners, which can, to a certain extent, prevent the sharp corners from cutting and wearing the seal 74, thereby extending the service life of the seal 74, ensuring the accuracy of the detection results, and ensuring the explosion-proof safety when the seal detection device is applied to work on the dust collector.

[0038] Reference Figures 1 - 3 , in some embodiments, when the seal detection gauge 7 is used to detect the deformation amount of the filter cartridge seal ring 4, the front end 711 of the gauge head main body 71 is sealedly installed on the filter cartridge mounting plate 1, and the detection tip of the retractable probe 72 abuts against the first end 31 of the filter cartridge 3; when the seal detection gauge 7 is used to detect the deformation amount of the filter cartridge cover seal ring 6, the front end 711 of the gauge head main body 71 is sealedly installed on the filter cartridge cover 5, and the detection tip of the retractable probe 72 abuts against the second end 32 of the filter cartridge 3. Accordingly, the seal detection gauge 7 can be installed at the first end 31 of the filter cartridge 3 or at the second end 32 of the filter cartridge 3, and a more convenient, accurate, and low-cost installation position can be adopted according to the specific structure of the filter cartridge 3 dust collector.

[0039] Since during the installation of the dust collector, finally, when installing the filter cartridge cover 5, force is applied to push the filter cartridge 3 so that it simultaneously squeezes the filter cartridge seal ring 4 and the filter cartridge cover seal ring 6 to achieve sealed installation, usually the filter cartridge seal ring 4 and the filter cartridge cover seal ring 6 are squeezed synchronously and evenly. By only measuring the deformation amount of any one of the seal rings, the installation sealing performance at both ends of the filter cartridge 3 can be obtained.

[0040] Furthermore, to ensure accurate measurement results and eliminate detection errors caused by slight deviations in the installation position of the filter cartridge 3 or the force application direction to the filter cartridge 3, seal detection gauges 7 will be installed at both ends of the filter cartridge 3.

[0041] In some more preferred embodiments, when multiple seal detection gauges 7 are assembled on the first end 31 or the second end 32 of the filter cartridge 3, the seal detection gauges 7 located at the same end are evenly distributed and installed. Accordingly, multi-point detection of the end sealing performance of the filter cartridge 3 can effectively avoid situations such as uneven extrusion deformation of the seal ring, where one point is sealed in place while another point is not compressed enough and the sealing is unqualified, making the detection results more accurate.

[0042] In some embodiments, the detection tip of the seal detection gauge vertically abuts against the first end 31 or the second end 32 of the filter cartridge 3, and the telescopic direction of the telescopic probe 72 is parallel to the axis of the filter cartridge 3. Accordingly, each telescopic movement of the telescopic probe 72 of the seal detection gauge can be parallel to the deformation compression direction of the filter cartridge seal ring 4 and the filter cartridge cover seal ring 6, so that the measured telescopic displacement of the probe is directly equal to the deformation of the seal ring, improving the accuracy of the deformation measurement, and further improving the measurement accuracy of the tightness of the installation of the filter cartridge 3 in the dust collector.

[0043] Reference Figures 4 - 6 , in some embodiments, the seal detection gauge 7 is a pure mechanical gauge head, the display instrument 8 is a mechanical pointer dial and is installed at the rear end of the gauge head main body 71, and the pointer of the display instrument 8 is directly connected to the telescopic probe 72 by means of a mechanical connection. Figure 6 The T-shaped structural member 76 in [] refers to the mechanical structure connecting the telescopic probe 72 and the pointer of the display instrument 8 in the seal detection gauge 7, which can convert the forward and backward telescopic displacement movement of the telescopic probe 72 into the rotation of the pointer of the display instrument 8. Accordingly, the seal detection gauge 7 with a pure mechanical structure avoids electronic circuits. In addition to being able to directly and clearly feedback the deformation of the filter cartridge seal ring 4 or the filter cartridge cover seal ring 6 and avoiding electronic failures, it can also effectively improve the explosion-proof effect of the dust collector, thereby improving the use safety of the dust collector.

[0044] Reference Figures 7 - 9 , in some other embodiments, the seal detection gauge 7 is a remote transmission gauge head, a displacement sensor is provided inside the gauge head main body 71, the display instrument 8 is arranged outside the dust collector and is signal-connected to the gauge head main body 71, and the displacement signal of the displacement sensor is transmitted to the display instrument 8 and processed and then displayed as the deformation. Figure 9 The T-shaped structural member 76 in [] refers to devices such as the displacement sensor, signal transmission module, and electrical connection module in the seal detection gauge 7, which can connect the telescopic probe 72 and the display instrument 8 and convert the forward and backward telescopic displacement movement of the telescopic probe 72 into the electronic data display of the display instrument 8. Accordingly, by using a remote transmission gauge head, the required electronic components, such as displacement sensors, connection lines and other electronic components, are all arranged inside the gauge head main body 71, and the front end 711 of the gauge head main body 71 is kept sealed and isolated from the dust removal chamber through the seal 74, so as to effectively prevent the dust in the dust removal chamber from entering the inside of the seal detection gauge 7, achieving a good explosion-proof effect.

[0045] In some embodiments, an explosion-proof junction box 75 is hermetically installed at the rear end of the meter head body 71. The explosion-proof junction box 75 is also located outside the dust collector. A micro-miniature explosion-proof junction box 75 for dust collectors commercially available can be selected. In case of problems with the sealing performance of the seal detection meter 7 and dust in the dust collector enters the seal detection meter 7, the explosion-proof junction box 75 can effectively prevent the dust concentration from being too high, avoid explosion caused by the contact between high-concentration dust and electric sparks, and can further improve the explosion-proof effect of the airtightness detection device applied to the dust collector.

[0046] The first end 31 of the present invention is located inside the dust collector. Therefore, if the seal detection meter 7 is installed at the first end 31, only a remote transmission meter head can be used, and an electronic display instrument 8 installed outside the dust collector is equipped; if the seal detection meter 7 is installed at the second end 32, a pure mechanical meter head can be installed, and a pointer dial mechanical display instrument 8 can be equipped, which is directly installed on the seal detection meter 7, or an electronic display instrument 8 can be equipped, which can be installed outside the dust collector.

[0047] In some embodiments, the present invention further includes a control system 9. All the seal detection meters 7 and all the display instruments 8 are connected to the control system 9. The control system 9 includes an online monitoring and alarm module. When it is detected that the deformation amount of the filter cartridge seal ring 4 or the filter cartridge cover seal ring 6 exceeds the set range, the control system 9 will issue an alarm. Accordingly, the operation data of all the filter cartridges 3 in the dust collector and the airtightness detection devices installed thereon can be collected into the control system 9 for centralized control. On this basis, an online monitoring and alarm module is equipped. Any abnormal detection data of the seal detection meter 7 can quickly alarm to remind the worker to check, and the worker can quickly find the corresponding filter cartridge 3 for manual troubleshooting and maintenance.

[0048] In the above embodiments, the descriptions of the embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0049] The present invention has been described by the above related embodiments. However, the above embodiments are only examples for implementing the present invention to help understand the technical solution and its core idea of the present application. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention; on the contrary, the technical solutions recorded in the foregoing embodiments can still be modified, or some of the technical features can be equivalently replaced; the modifications and refinements made without departing from the spirit and scope of the present invention all fall within the scope of the patent protection of the present invention.

Claims

1. An airtightness detection device for filter cartridges used in dust collectors, characterized in that: It includes a filter cartridge mounting plate, a filter cartridge support, a filter cartridge, a filter cartridge sealing ring, a filter cartridge cover, a filter cartridge cover sealing ring, a seal detection meter, and a display instrument; the filter cartridge mounting plate is installed inside the dust collector, the filter cartridge support is vertically installed on the filter cartridge mounting plate, the filter cartridge is sleeved outside the filter cartridge support, the filter cartridge is perpendicular to the filter cartridge mounting plate under the support of the filter cartridge support, the filter cartridge includes an opposite first end and a second end, the first end is close to the filter cartridge mounting plate, the second end is close to the outside of the dust collector, and a ring of filter cartridge sealing ring is installed between the first end of the filter cartridge and the filter cartridge mounting plate, and a ring of filter cartridge cover sealing ring is installed between the second end of the filter cartridge and the filter cartridge cover; The seal detection meter is hermetically installed at the first end and / or the second end of the filter cartridge. When the filter cartridge is installed in the dust collector, the filter cartridge sealing ring and the filter cartridge cover sealing ring are squeezed and deformed. The seal detection meter is used to monitor the deformation amount of the filter cartridge sealing ring and / or the filter cartridge cover sealing ring in real time. The display instrument is connected to the seal detection meter and is used to display the deformation value detected by the seal detection meter. When the deformation value of the seal detection meter is within the normal value range, the sealing performance of the filter cartridge is qualified.

2. The airtightness detection device for the filter cartridge used in the dust collector according to claim 1, characterized in that: The seal detection meter includes a meter head main body, a telescopic probe, a return spring, and a seal. The telescopic probe is installed at the front end of the meter head main body. A seal is installed between the telescopic probe and the front end of the meter head main body to maintain a seal. The return spring is installed inside the meter head main body and on the telescopic probe. The telescopic probe retracts into the meter head main body when it is subjected to an external force. When the external force acting on the telescopic probe disappears, it extends out of the meter head main body and resets under the action of the return spring. When the telescopic probe expands and contracts at the front end of the meter head main body, the seal always maintains a seal with the telescopic probe.

3. The airtightness detection device for the filter cartridge of the dust collector according to claim 2, wherein: When the seal detection meter is used to detect the deformation amount of the filter cartridge sealing ring, the front end of the meter head main body is hermetically installed on the filter cartridge mounting plate, and the detection tip of the telescopic probe abuts against the first end of the filter cartridge; when the seal detection meter is used to detect the deformation amount of the filter cartridge cover sealing ring, the front end of the meter head main body is hermetically installed on the filter cartridge cover, and the detection tip of the telescopic probe abuts against the second end of the filter cartridge.

4. The airtightness detection device for the filter cartridge of the dust collector according to claim 3, wherein: The seal detection meter is a pure mechanical meter head, the display instrument is a mechanical pointer dial and is installed at the rear end of the meter head main body. The pointer of the display instrument is directly connected to the telescopic probe in a mechanically connected manner. The telescopic movement of the telescopic probe directly drives the pointer of the display instrument to rotate.

5. The airtightness detection device for the filter cartridge used in the dust collector according to claim 3, characterized in that: The seal detection meter is a remote transmission meter head. A displacement sensor is provided inside the meter head main body. The display instrument is arranged outside the dust collector and is signal-connected to the meter head main body. The displacement signal of the displacement sensor is transmitted to the display instrument and is processed and displayed as the deformation amount.

6. The airtightness detection device for filter cartridges used in dust collectors according to claim 5, wherein: An explosion-proof junction box is hermetically installed at the rear end of the meter head main body.

7. The airtightness detection device for filter cartridges used in dust collectors according to claim 2, wherein: The detection tip of the seal detection gauge is vertically abutted against the first end or the second end of the filter cartridge, and the telescopic direction of the telescopic probe is parallel to the axis of the filter cartridge.

8. The airtightness detection device for filter cartridges used in dust collectors according to claim 1, characterized in that: At least one filter cartridge is installed in the dust removal chamber of the dust collector, and each filter cartridge is equipped with at least one seal detection gauge.

9. The airtightness detection device for the filter cartridge of the dust collector according to claim 8, characterized in that: It further includes a control system. All the seal detection gauges and all the display instruments are connected to the control system. The control system includes an on-line monitoring and alarm module. When the deformation amount of the filter cartridge seal ring or the filter cartridge cover seal ring exceeds the set range, the control system will issue an alarm.

10. The airtightness detection device for filter cartridges used in dust collectors according to claim 8, characterized in that: When there are multiple seal detection gauges assembled on the first end or the second end of the filter cartridge, the seal detection gauges located at the same end are evenly distributed and installed.

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