Dust removal device and dust removal method thereof

Abstract

The present invention discloses a dust removal device and a dust removal method thereof, comprising a medium flow channel arranged in the main body of the dust removal device, a nozzle being arranged at the outlet of the medium flow channel, a filter element being arranged in the medium flow channel, a sewage outlet of the filter element being connected to the sewage flow channel, a solenoid valve or elastic valve core assembly for controlling the flow being arranged between the sewage outlet and the sewage flow channel, and when the solenoid valve is arranged, a pressure sensor and / or a flow sensor is arranged in the medium flow channel. The dust removal method includes a multi-mode dust removal method. The present invention provides a variety of technical solutions that can realize automatic sewage discharge, which can adopt a purely mechanical structure, that is, the elastic valve core assembly cooperates with the pressure in the medium flow channel, and the medium pressure pushes the elastic valve core assembly to change position, thereby realizing the opening and closing of the sewage flow channel. When the foreign matter blocked in the filter element is automatically discharged, the pressure in the medium flow channel is restored, and the elastic valve core assembly can automatically reset to automatically block the sewage flow channel.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal, and in particular to a dust removal device and a dust removal method thereof. Background Art

[0002] Dust removal technology is a crucial feature of mining machinery and a critical step in mining operations. Dust particles suspended in the air are aggregated and separated from the air through collision, wetting, covering, enveloping, and adhering to foam or water mist. Current dust removal methods often rely on single-use systems, such as fans or water mist. Fans are not ideal, and water mist has specific requirements for water flow and quality. Substandard water containing impurities can easily clog water pipelines, making it difficult to cope with the complex and harsh working conditions of mining operations.

[0003] In recent years, in order to improve the dust removal effect, new technical means such as foam dust removal have gradually emerged. For example, the Chinese utility model patent with the authorization announcement date of 2022-02-11 and the authorization announcement number CN215782338U discloses a foam dust removal device, including a dust removal container and a dust removal unit. The dust removal container is provided with an air inlet and an air outlet. The dust removal unit is arranged in the dust removal container and is located between the air inlet and the air outlet, including a sieve plate and a foam washing nozzle. The foam washing nozzle is arranged above the sieve plate for conveying washing water to the sieve plate. The sieve plate is arranged above the air inlet. The sieve plate includes a foaming layer and sieve holes. The sieve holes are arranged at the bottom of the foaming layer. The washing water flows out from the sieve holes to perform preliminary filtration on the dust-laden air entering the dust removal container from the air inlet. The foaming layer is used to physically foam the washing water and the dust-laden air that has been preliminarily filtered, and to perform secondary filtration on the dust-laden air. That is, the purpose of dust removal is achieved by physically foaming the washing water and the dust-laden air through gas, and filtering the dust-laden air. However, its cost is high and its application is not widespread.

[0004] Therefore, it is urgent to design a dust removal device with automatic sewage discharge to avoid the limitations of water flow and water quality on water mist dust removal. At the same time, it is also urgent to design a multi-mode dust removal device to reduce dust removal costs and expand the scope of application.

[0005] SUMMARY OF THE INVENTION

[0006] In response to the deficiencies in the above-mentioned background technology, the present invention proposes a dust removal device and a dust removal method thereof, which solve the technical problems of the existing water mist dust removal pipeline being prone to blockage, the high cost of foam dust removal, the single working mode, and the poor adaptability.

[0007] The technical solution of this application is:

[0008] A dust removal device includes a medium flow channel disposed within a main body of the dust removal device, a nozzle disposed at the outlet of the medium flow channel, a filter element disposed within the medium flow channel, a sewage outlet of the filter element connected to the sewage discharge channel, and a solenoid valve or elastic valve core assembly for controlling the flow of sewage. When a solenoid valve is provided, a pressure sensor and / or a flow sensor is provided within the medium flow channel. The present invention provides a variety of technical solutions for achieving automatic sewage discharge, including a purely mechanical structure, wherein the elastic valve core assembly cooperates with the pressure within the medium flow channel, and the medium pressure pushes the elastic valve core assembly to change position, thereby achieving the opening and closing of the sewage discharge channel. When foreign matter blocked in the filter element is automatically discharged, the pressure within the medium flow channel is restored, and the elastic valve core assembly can automatically reset, automatically blocking the sewage discharge channel. In addition, the pressure within the medium flow channel can be detected in real time by a pressure sensor and / or a flow sensor, thereby controlling the timely opening and closing of the solenoid valve to achieve automatic sewage discharge. The technical solution using the solenoid valve includes three implementation schemes, one using only a pressure sensor for detection, one using only a flow sensor for detection, and the other using both a pressure sensor and a flow sensor for detection.

[0009] Preferably, the elastic valve core assembly includes a valve core sealed between the drain port and the drain channel, and the end of the valve core facing away from the drain port is supported by a first elastic component. When the pressure in the medium channel is greater than the elastic force of the first elastic component, the valve core moves axially and the drain port is connected to the drain channel.

[0010] Alternatively, the medium flow channel on the front side of the filter element is recorded as the inlet flow channel, and the medium flow channel on the rear side is recorded as the outlet flow channel. The inlet flow channel and the outlet flow channel are respectively connected to the first control flow channel and the second control flow channel which are connected to the valve core slide. The valve core slide is connected to the sewage flow channel and the sewage outlet. The elastic valve core assembly is arranged in the valve core slide. The pressure difference between the first control flow channel and the second control flow channel drives the elastic valve core assembly to block or connect the sewage outlet and the sewage flow channel.

[0011] Furthermore, the elastic valve core assembly includes a control valve core slidably arranged in a valve core slide through a second elastic component, the first control flow channel and the second control flow channel are respectively connected to the two ends of the control valve core, a ejector pin is provided at one end of the control valve core, and the ejector pin is connected to a drain valve core, and a sealing port is provided in the valve core slide that seals with the drain valve core, and the sealing port is located between the drain port and the drain flow channel.

[0012] Furthermore, the end surface area of ​​the end of the control valve core connected to the first control flow channel is larger than the end surface area of ​​the end connected to the second control flow channel.

[0013] Furthermore, the sewage valve core includes a cylinder facing the sewage outlet, and the end of the cylinder away from the sewage outlet is connected to a sealing surface that seals with the sealing port. The diameter of the cylinder is smaller than the diameter of the valve core slide, and a sewage hole is provided on the outer peripheral wall of the cylinder.

[0014] Furthermore, a drain valve core guide sleeve that is slidably inserted with the drain valve core is provided in the valve core slideway, and a third elastic component is provided between the drain valve core guide sleeve and the drain valve core.

[0015] Furthermore, a protruding structure that slidably cooperates with the inner wall of the valve core slideway is provided on the outer peripheral wall of the sewage valve core, and the third elastic component is provided between the protruding structure and the end of the sewage valve core guide sleeve.

[0016] Furthermore, a thimble guide sleeve is provided in the valve core slideway and is slidably inserted into the thimble, and both ends of the thimble are respectively in contact with the control valve core and the sewage valve core.

[0017] Furthermore, one end of the control valve core connected to the first control flow channel is positioned by a control valve core elastic retaining ring, and the other end connected to the second control flow channel is provided with a control valve core guide sleeve elastic retaining ring, and the side of the control valve core guide sleeve elastic retaining ring facing the control valve core is provided with a control valve core guide sleeve that is slidably engaged with the control valve core, and the second elastic component is arranged between the control valve core guide sleeve and the control valve core.

[0018] Furthermore, the outer peripheral wall of the control valve core is provided with a protruding structure that slidably cooperates with the inner wall of the valve core slideway, and the second elastic component is arranged between the protruding structure and the end of the control valve core guide sleeve.

[0019] Furthermore, the medium flow channel includes a water flow channel and a foam flow channel that are independently arranged, and the nozzle includes a water mist nozzle connected to the water flow channel and a foam nozzle connected to the foam flow channel.

[0020] A dust removal method adopts the dust removal device, wherein an external medium enters a filter element through an inlet flow channel of the dust removal device body, wherein internal dirt and residue are filtered and stored inside the filter element, and the filtered medium enters each nozzle through an outlet flow channel for dust removal.

[0021] It also includes an automatic sewage discharge method: the dirt and debris stored inside the filter element will increase the pressure difference between the inlet flow channel and the outlet flow channel, and the medium reaches the two ends of the control valve core through the first control flow channel and the second control flow channel respectively. The pressure difference forms an axial thrust of the control valve core. When the axial thrust overcomes the elastic force of the second elastic component, the control valve core moves axially, and then pushes the ejector pin and the sewage valve core to move axially synchronously, so that the sewage valve core and the valve core slide are unsealed. The dirt and debris stored inside the filter element enter the sewage valve core, the gap between the sewage valve core and the valve core slide, and the sewage flow channel in turn under the action of the inlet flow channel medium, thereby completing the sewage discharge process.

[0022] After the dirt and residue inside the filter element are drained, the water in the water inlet channel can reach the water delivery channel through the filter element, the water flow is restored to be smooth, the pressure difference between the inlet channel and the outlet channel is reduced, and the medium reaches the two ends of the control valve core through the first control channel and the second control channel respectively. The pressure difference generated cannot overcome the elastic force of the second elastic component, and the second elastic component pushes the control valve core to reset.

[0023] Furthermore, it also includes a multi-mode dust removal method, which adopts water and foam dual-flow channel dust removal. In application conditions such as coal roadway cutting, foam water flows through the foam flow channel of the dust removal device body to reach the foam nozzle, realizing the foam dust removal mode; in hard rock or coal rock cutting dust removal conditions, it switches to water mist mode for dust removal, and water flows through the inlet flow channel, filter element, and outlet flow channel of the dust removal device body to reach the water mist nozzle, realizing the water mist dust removal mode; or the foam dust removal mode and the water mist dust removal mode are used simultaneously or intermittently.

[0024] A dust removal method, using the dust removal device, wherein an external medium enters a filter element through an inlet flow channel of a dust removal device body, wherein internal dirt and debris are filtered and stored inside the filter element, and the filtered medium enters various nozzles through an outlet flow channel for dust removal; and also includes an automatic sewage discharge method: when the pressure of the medium flow channel decreases or the flow rate is less than a threshold value, the solenoid valve controlling sewage discharge is automatically opened, and under the action of the pressure of the medium flow channel, the dirt and debris in the filter element are discharged, completing the automatic sewage discharge.

[0025] A dust removal method, using the dust removal device, an external medium enters the filter element through the inlet flow channel of the dust removal device body, wherein the internal dirt and debris are filtered and stored inside the filter element, and the filtered medium enters each nozzle through the outlet flow channel for dust removal; and also includes an automatic sewage discharge method: the dirt and debris stored inside the filter element will increase the pressure of the inlet flow channel. When the pressure increase overcomes the elastic force of the first elastic component, the valve core is pushed axially to connect the sewage outlet with the sewage flow channel and release the isolation. The dirt and debris stored inside the filter element enter the sewage flow channel in turn under the pressure of the inlet flow channel medium, thereby completing the sewage discharge process.

[0026] The beneficial effects of the present invention include:

[0027] 1. Compared with the existing technology, the automatic sewage discharge structure is adopted, which can not only perform secondary fine filtration of dirt and residue in the water, and automatically discharge sewage, avoid nozzle blockage, reduce maintenance time, and improve dust removal efficiency; but also is suitable for other liquid media, gas media, and critical media.

[0028] 2. Compared with the existing technology, the mechanical structure is used to achieve automatic slag discharge. Compared with the combination of solenoid valves and sensors for sewage discharge, the use cost is low, the failure rate is low, and the reliability is high.

[0029] 3. Compared with the existing technology, the multi-mode spray dust removal adopted can realize switching between multiple modes such as water mist dust removal and foam dust removal. Different dust removal modes can be adopted to cope with different complex construction conditions. It has strong applicability, better dust removal effect, and saves dust removal construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 It is a side view of the dust removal device of the present invention;

[0032] Figure 2 for Figure 1 Cross-sectional view of the middle CC plane;

[0033] Figure 3 for Figure 1 Cross-sectional view of the middle DD plane;

[0034] Figure 4 for Figure 1 Axonometric Figure 1 ;

[0035] Figure 5 for Figure 1 Axonometric Figure 2 .

[0036] Description of Figure Numbers:

[0037] Dust removal device main body 1, water mist nozzle 2, foam nozzle 3;

[0038] Water delivery channel 4.1, sewage discharge channel 4.2, water inlet channel 4.3, first control channel 4.4, second control channel 4.5, valve core slide 4.6;

[0039] Filter element circlip 5, filter element 6, drain valve core guide sleeve circlip 7.1, ejector guide sleeve left circlip 7.2, ejector guide sleeve right circlip 7.3, control valve core guide sleeve circlip 7.4, control valve core circlip 7.5;

[0040] Drain valve core guide sleeve 8, drain spring 9, drain valve core 10, ejector pin 11, ejector pin guide sleeve 12, control valve core guide sleeve 13, control spring 14, control valve core 15, plug 16, plug 17, foam flow channel 18. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0042] A dust removal device, such as Figure 1 and Figure 2 As shown, it includes a medium flow channel arranged in the dust removal device body 1, the outlet of the medium flow channel is provided with a nozzle, a filter element 6 is provided in the medium flow channel, the discharge port of the filter element 6 is connected to the discharge flow channel 4.2, and a solenoid valve or elastic valve core assembly for controlling the flow is provided between the discharge port and the discharge flow channel 4.2. When the solenoid valve is provided, a pressure sensor and / or a flow sensor is provided in the medium flow channel.

[0043] That is, the present invention provides a variety of technical solutions that can realize automatic sewage discharge. A purely mechanical structure can be used, that is, the elastic valve core assembly cooperates with the pressure in the medium flow channel, and the medium pressure pushes the elastic valve core assembly to change position, thereby realizing the opening and closing of the sewage flow channel 4.2. When the foreign matter blocked in the filter element 6 is automatically discharged, the pressure in the medium flow channel is restored, and the elastic valve core assembly can automatically reset to automatically block the sewage flow channel. In addition, the pressure in the medium flow channel can be detected in real time by a pressure sensor and / or a flow sensor, thereby controlling the timely opening and closing of the solenoid valve to realize automatic sewage discharge. The technical solution using a solenoid valve includes three implementation plans, one using only a pressure sensor for detection, one using only a flow sensor for detection, and the other using both a pressure sensor and a flow sensor for detection.

[0044] Based on the above embodiment, as a preferred embodiment of the dust removal device, the elastic valve core assembly includes a valve core sealed between the sewage outlet and sewage discharge channel 4.2. The end of the valve core facing away from the sewage outlet supports a first elastic component. When the pressure in the medium flow channel exceeds the elastic force of the first elastic component, the valve core moves axially, connecting the sewage outlet with sewage discharge channel 4.2. Preferably, the first elastic component can be a coil spring, a thin leaf spring, a gas spring, or the like.

[0045] As a preferred embodiment of the dust removal device, the medium flow channel on the front side of the filter element 6 is recorded as the inlet flow channel, and the medium flow channel on the rear side is recorded as the outlet flow channel. The inlet flow channel and the outlet flow channel are respectively connected to the first control flow channel 4.4 and the second control flow channel 4.5 connected to the valve core slide 4.6. The valve core slide 4.6 is connected to the sewage flow channel 4.2 and the sewage outlet. The elastic valve core assembly is arranged in the valve core slide 4.6. The pressure difference between the first control flow channel 4.4 and the second control flow channel 4.5 drives the elastic valve core assembly to block or connect the sewage outlet and the sewage flow channel 4.2.

[0046] Based on the above embodiment, as a preferred embodiment of the dust removal device, the elastic valve core assembly includes a control valve core 15 slidably disposed within a valve core slideway 4.6 via a second elastic component. The first control flow channel 4.4 and the second control flow channel 4.5 are respectively connected to the two ends of the control valve core 15. A pin 11 is provided at one end of the control valve core 15, and the pin 11 is connected to a drain valve core 10. A sealing port is provided within the valve core slideway 4.6 to seal with the drain valve core 10, and the sealing port is located between the drain port and the drain flow channel 4.2. The second elastic component can be a coil spring, a thin leaf spring, a gas spring, or the like.

[0047] On the basis of the above embodiment, as a preferred embodiment of the dust removal device, the end face area of ​​the control valve core 15 connected to the first control channel 4.4 is larger than the end face area of ​​the end connected to the second control channel 4.5, which can effectively improve the response speed of automatic sewage discharge.

[0048] On the basis of the above embodiment, as a preferred embodiment of the dust removal device, the sewage valve core 10 includes a cylinder facing the sewage outlet, and the end of the cylinder away from the sewage outlet is connected to a sealing surface that seals with the sealing port. The diameter of the cylinder is smaller than the diameter of the valve core slide 4.6, and a sewage hole is provided on the outer peripheral wall of the cylinder.

[0049] Based on the above embodiment, as a preferred embodiment of the dust removal device, a drain valve core guide sleeve 8 is provided in the valve core slideway 4.6 and is slidably engaged with the drain valve core 10. A third elastic member is provided between the drain valve core guide sleeve 8 and the drain valve core 10. The third elastic member can be a coil spring, a thin leaf spring, a gas spring, or the like.

[0050] On the basis of the above embodiment, as a preferred embodiment of the dust removal device, a protruding structure that slides with the inner wall of the valve core slide 4.6 is provided on the outer peripheral wall of the sewage valve core 10, and the third elastic component is provided between the protruding structure and the end of the sewage valve core guide sleeve 8.

[0051] On the basis of the above embodiment, as a preferred embodiment of the dust removal device, a pin guide sleeve 12 is provided in the valve core slideway 4.6, which is slidably fitted with the pin 11, and the two ends of the pin 11 are respectively fitted with the control valve core 15 and the sewage valve core 10.

[0052] On the basis of the above embodiment, as a preferred embodiment of the dust removal device, the end of the control valve core 15 connected to the first control flow channel 4.4 is positioned by a control valve core elastic retaining ring 7.5, and the end connected to the second control flow channel 4.5 is provided with a control valve core guide sleeve elastic retaining ring 7.4, and the side of the control valve core guide sleeve elastic retaining ring 7.4 facing the control valve core 15 is provided with a control valve core guide sleeve 13 that is slidably engaged with the control valve core 15, and the second elastic component is arranged between the control valve core guide sleeve 13 and the control valve core 15.

[0053] Based on the above embodiment, as a preferred embodiment of the dust removal device, the outer peripheral wall of the control valve core 15 is provided with a protruding structure that slides with the inner wall of the valve core slide 4.6, and the second elastic component is arranged between the protruding structure and the end of the control valve core guide sleeve 13.

[0054] On the basis of the above embodiment, as a preferred embodiment of the dust removal device, Figure 3 As shown, the medium flow channel includes a water flow channel and a foam flow channel 18 that are independently arranged, and the nozzle includes a water mist nozzle 2 connected to the water flow channel and a foam nozzle 3 connected to the foam flow channel 18.

[0055] A dust removal device, such as Figure 1-Figure 5As shown, it includes a dust removal device body 1, a water mist nozzle 2, a foam nozzle 3, a water delivery channel 4.1, a sewage discharge channel 4.2, a water inlet channel 4.3, a first control channel 4.4, a second control channel 4.5, a valve core slide 4.6, a filter element elastic retaining ring 5, a filter element 6, a sewage discharge valve core guide sleeve elastic retaining ring 7.1, an ejector guide sleeve left elastic retaining ring 7.2, an ejector guide sleeve right elastic retaining ring 7.3, a control valve core guide sleeve elastic retaining ring 7.4, a control valve core elastic retaining ring 7.5, a sewage discharge valve core guide sleeve 8, a sewage discharge spring 9, a sewage discharge valve core 10, an ejector 11, an ejector guide sleeve 12, a control valve core guide sleeve 13, a control spring 14, a control valve core 15, a plug 16, a plug 17, and a foam channel 18.

[0056] The dust removal device body is mainly used to install and fix various components of the automatic sewage discharge, and the internal flow channel is used for the flow of fluid;

[0057] The filter element is fixed at the water inlet position of the dust removal device body to filter the water entering the dust removal device body;

[0058] The filter element elastic retaining ring is installed in the processing groove of the dust removal device body to fix the filter element and prevent it from axial movement;

[0059] The sewage discharge valve core is installed in the sewage discharge flow channel of the dust removal device body, and its wedge-shaped end surface cooperates with the wedge-shaped end of the sewage discharge flow channel, and the flow channel processed inside plays the role of sewage discharge;

[0060] The drainage spring has an axis coaxial with the drainage valve core, and one end thereof cooperates with the end face of the drainage valve core. Under the action of the spring force, the wedge-shaped end face of the drainage valve core is pressed tightly against the wedge-shaped end of the drainage flow channel of the dust removal device body.

[0061] The drain valve core guide sleeve has an outer diameter that matches the drain flow channel of the dust removal device body, an inner diameter that matches the outer diameter of the drain valve core, one end face that matches the other end face of the drain spring, and the other end face that matches the elastic retaining ring installed in the machined groove in the drain flow channel, thereby playing a guiding and connecting role;

[0062] The outer diameter of the ejector guide sleeve matches the flow channel, and both end faces are fixed by elastic retaining rings, which separate the sewage flow channel and the control flow channel, playing a guiding and isolating role;

[0063] The outer diameter of the ejector pin matches the inner diameter of the ejector pin guide sleeve, and under the action of force, the ejector pin pushes open the drain valve core to drain the sewage, playing the role of connection and providing thrust;

[0064] The control valve core has an outer diameter that matches the control flow channel, and a large end that matches the elastic retaining ring installed in the groove machined in the control flow channel, and provides a pilot thrust under the pressure difference between the inlet and outlet water.

[0065] The control spring has one end face fitted with the small end face of the control valve core. Under the action of the spring force, the large end of the control valve core is pressed against the elastic retaining ring, thereby providing a supporting reaction force.

[0066] The control valve core guide sleeve has an outer diameter that matches the control flow channel, an inner diameter that matches the minor diameter of the control valve core, one end face that matches the other end face of the control spring, and the other end face that matches the elastic retaining ring installed in the machined groove in the control flow channel, and plays a guiding and connecting role;

[0067] The plug is installed on the end face of the flow channel of the main body of the dust removal device, and has a blocking function;

[0068] The nozzles are installed at the outlets of each branch channel of the dust removal device body to perform atomization dust removal.

[0069] Specifically, the filter element 6 is installed inside the water inlet channel 4.3 of the dust removal device body 1 and is fixed with a filter element elastic retaining ring 5. The water supply channel 4.1 is connected to the water inlet channel 4.3 where the filter element 6 is installed. The water mist nozzle 2 is installed at each outlet position of the water supply channel 4.1 of the dust removal device body 1 to form a water spray channel. The first control channel 4.4 and the second control channel 4.5 opened on the side of the water supply channel 4.1 and the water inlet channel 4.3 are connected to the two end faces of the control valve core 15, wherein the large end of the control valve core 15 is limited by the control valve core elastic retaining ring 7.5, the outer diameter of the small end of the control valve core 15 is coaxially matched with the control valve core guide sleeve 13 and the control spring 14, one end face of the control spring 14 is matched with the small end face of the control valve core 15, and the other end face is matched with the end face of the control valve core guide sleeve 13, and the other end face of the control valve core guide sleeve 13 is limited by the control valve core guide sleeve elastic retaining ring 7.4. The ejector pin 11 in the valve core slide 4.6 slides axially in the ejector pin guide sleeve 12. The large end of the ejector pin 11 contacts the small end face of the control valve core 15. The small end face of the ejector pin 11 acts on the wedge-shaped end face of the drain valve core 10. The drain channel is opened and closed by controlling the wedge-shaped gap formed by the wedge-shaped end face of the drain valve core 10 and the wedge-shaped end face of the drain channel 4.2. The ejector pin guide sleeve 12 is fixed by the left elastic retaining ring 7.2 of the ejector pin guide sleeve and the right elastic retaining ring 7.3 of the ejector pin guide sleeve. The bottom drain port of the filter element 6 discharges the dirt and residue inside the filter element 6 through the wedge-shaped gap and the drain channel 4.2 to the outside of the dust removal device main body 1 through the drain valve core guide sleeve 8 and the drain valve core 10. The drain valve core guide sleeve elastic retaining ring 7.1 limits the end face of the drain valve core guide sleeve 8. Foam dust removal is when foam water enters the foam nozzle 3 through the foam flow channel 18 to achieve foam spray dust removal.

[0070] Preferably, the main body of the dust removal device is provided with two groups of flow channels for foam spray dust removal and water spray dust removal, which can realize multiple working modes of dust removal by any group of flow channels alone.

[0071] Preferably, the number of the water mist nozzles and foam nozzles can be increased or decreased according to working conditions, and the nozzle types and specifications can be adjusted according to working conditions.

[0072] Preferably, the flow channel size, layout mode and specifications of the internal automatic sewage discharge device of the foam spray dust removal and water spray dust removal can be adjusted and arranged according to the model and working conditions of the construction machinery.

[0073] Preferably, if Figure 4 and Figure 5 As shown, the water mist nozzle 2 and the foam nozzle 3 are arranged along the length direction of the dust removal device body 1, and the first control flow channel 4.4, the second control flow channel 4.5, and the valve core slide 4.6 are all arranged at one end of the dust removal device body 1.

[0074] In the above embodiment, as described above, water flows through the filter element through the water inlet, trapping dirt and debris within the filter element. The filtered water then flows through the water channel to the various branches, where it is atomized and sprayed out through the water mist nozzle, achieving the purpose of dust removal. When the amount of dirt and debris within the filter element increases to a certain value, the water flow rate and pressure within the water channel decrease, while the water pressure at the water inlet remains unchanged, resulting in an increase in the pressure differential between the inlet and outlet. This pressure differential pushes the control valve core to overcome the spring force of the control spring, causing the control valve core to move axially within the control channel, pushing the ejector pin to move. The ejector pin then pushes the drain valve core, causing the drain valve core to move axially against the spring force of the drain spring, increasing the gap between the wedge-shaped end face of the drain valve core and the wedge-shaped end face of the drain channel, thereby opening the drain channel. At this time, the dirt and debris inside the filter element flow out of the dust removal device body through the internal flow channel of the sewage valve core and the sewage flow channel, completing the sewage discharge process; after the dirt and debris inside the filter element are discharged, the pressure difference between the inlet and outlet water ports decreases, the control valve core is insufficient to overcome the spring force of the control spring, the control valve core resets under the action of the spring force, and its sewage valve core resets under the spring force of the sewage spring, so that the gap formed by the wedge-shaped end face of the sewage valve core and the wedge-shaped end of the sewage flow channel is reduced to 0, the sewage flow channel is closed, and sewage discharge stops. This is the entire sewage discharge process for automatic sewage discharge. Taking into account the complexity of the construction conditions, the invented multi-mode dust removal device adopts water mist and foam dual-flow channel dust removal. For different cutting objects, foam spray dust removal or water spray dust removal can be used for dust removal, which improves dust removal efficiency and saves use costs. It has strong applicability.

[0075] In the above embodiment, in view of the poor water quality in the construction environment, the automatic sewage discharge device used can automatically filter the water and automatically discharge slag, avoiding the blockage of the water flow channel affecting the construction progress. It has a strong sewage receiving capacity, and the automatic sewage discharge device is sensitive to response. It adopts a dual flow channel of water and foam dust removal and a multi-mode working mode. Different types of working modes can be used according to different construction conditions to achieve multiple working modes of water dust removal and foam dust removal. The device has strong adaptability and a wide range of applications.

[0076] A dust removal method uses the dust removal device, and the external medium enters the filter element 6 through the inlet flow channel of the dust removal device body 1, wherein the internal dirt and residue are filtered and stored inside the filter element 6, and the filtered medium enters each nozzle through the outlet flow channel for dust removal.

[0077] The device also includes an automatic sewage discharge method: external water enters the filter element 6 through the water inlet channel 4.3 of the dust removal device body 1, where the internal dirt and debris are filtered and stored inside the filter element 6. The filtered water enters the various water mist nozzles 2 through the water supply channel 4.1 for atomization, forming water mist for dust removal. When the amount of dirt and debris stored inside the filter element 6 reaches a certain value, it will block the water supply channel 4.1 and the water inlet channel 4.3, causing the pressure difference between the two ends of the water supply channel 4.1 and the water inlet channel 4.3 to increase. The water passes through the first control channel 4.4 and the second control channel 4.5 respectively to the two ends of the control valve core 15. The pressure difference generated creates an axial thrust on the control valve core 15. The axial thrust is compared with the elastic force of the control spring 14. When the axial thrust overcomes the elastic force of the control spring 14, it will push the control valve core 15 to move axially, thereby pushing the ejector pin 11 in the ejector pin guide sleeve 12. The drain valve core 10 overcomes the spring force of the drain spring 14 and moves axially, thereby increasing the gap between the wedge-shaped end face of the drain valve core 10 and the wedge-shaped end face of the drain flow channel 4.2. The drain flow channel 4.2 opens. At this time, the dirt and residue stored in the filter element 6 are discharged from the dust removal device body 1 through the drain valve core 10, the wedge-shaped gap formed by the wedge-shaped end face of the drain valve core 10 and the wedge-shaped end face of the drain flow channel 4.2 and the drain flow channel 4.2 under the action of the water pressure in the water inlet flow channel 4.3, thereby completing the draining process. After the dirt and debris inside the filter element 6 are drained, the water in the water inlet channel 4.3 can pass through the filter element 6 to the water supply channel 4.1, and the water flow is restored. The pressure difference between the water supply channel 4.1 and the water inlet channel 4.3 will decrease, and the water will reach the two ends of the control valve core 15 through the first control channel 4.4 and the second control channel 4.5 respectively. The pressure difference generated creates an axial thrust on the control valve core 15 that cannot overcome the elastic force of the control spring 14, and the control spring 14 pushes the control valve core 15 to reset. The sewage valve core 10 and the ejector pin 11 are also reset under the elastic force of the sewage spring 9. The gap formed by the wedge-shaped end face of the sewage valve core 10 and the wedge-shaped end of the sewage discharge channel 4.2 is reduced to 0, and the sewage discharge channel 4.2 is closed, thereby achieving automatic closure of the valve core after sewage discharge is completed.

[0078] As a preferred embodiment of the dust removal method, a multi-mode dust removal method is also included, which adopts water and foam dual-flow channel dust removal. In application conditions such as coal roadway cutting, foam water flows through the foam flow channel 18 of the dust removal device body 1 to reach the foam nozzle 3, realizing the foam dust removal mode; in hard rock or coal rock cutting dust removal conditions, it switches to the water mist mode for dust removal, and water flows through the inlet flow channel, filter element 6, and outlet flow channel of the dust removal device body 1 to reach the water mist nozzle 2, realizing the water mist dust removal mode; or the foam dust removal mode and the water mist dust removal mode can be used simultaneously or intermittently.

[0079] A dust removal method, using the dust removal device, an external medium enters the filter element 6 through the inlet flow channel of the dust removal device body 1, wherein the internal dirt and debris are filtered and stored inside the filter element 6, and the filtered medium enters each nozzle through the outlet flow channel for dust removal; and also includes an automatic sewage discharge method: when the pressure of the medium flow channel decreases or the flow rate is less than a threshold value, the solenoid valve controlling the sewage discharge is automatically opened, and under the action of the pressure of the medium flow channel, the dirt and debris in the filter element 6 are discharged, completing the automatic sewage discharge.

[0080] A dust removal method, using the dust removal device, an external medium enters the filter element 6 through the inlet flow channel of the dust removal device body 1, wherein the internal dirt and debris are filtered and stored inside the filter element 6, and the filtered medium enters each nozzle through the outlet flow channel for dust removal; it also includes an automatic sewage discharge method: the dirt and debris stored in the filter element 6 will increase the pressure of the inlet flow channel. When the pressure increase overcomes the elastic force of the first elastic component, the valve core is pushed axially to connect the sewage outlet with the sewage flow channel 4.2 and release the isolation. The dirt and debris stored in the filter element 6 enter the sewage flow channel 4.2 in turn under the pressure of the inlet flow channel medium, thereby completing the sewage discharge process.

[0081] Any details not provided in the present invention are conventional technical means known to those skilled in the art.

[0082] The above content shows and describes the basic principles, main features and beneficial effects of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A dust removal device, comprising a medium flow channel arranged in a dust removal device body (1), wherein an outlet of the medium flow channel is provided with a nozzle, characterized in that: A filter element (6) is provided in the medium flow channel, a sewage outlet of the filter element (6) is connected to the sewage flow channel (4.2), and an elastic valve core component for controlling the flow is provided between the sewage outlet and the sewage flow channel (4.2); The medium flow channel on the front side of the filter element (6) is recorded as the inlet flow channel, and the medium flow channel on the rear side is recorded as the outlet flow channel. The inlet flow channel and the outlet flow channel are respectively connected to a first control flow channel (4.4) and a second control flow channel (4.5) that are connected to the valve core slide (4.6). The valve core slide (4.6) is connected to the sewage flow channel (4.2) and the sewage outlet. The elastic valve core assembly is arranged in the valve core slide (4.6). The pressure difference between the first control flow channel (4.4) and the second control flow channel (4.5) drives the elastic valve core assembly to block or connect the sewage outlet and the sewage flow channel (4.2). The elastic valve core assembly comprises a control valve core (15) slidably arranged in a valve core slideway (4.6) via a second elastic component, a first control flow channel (4.4) and a second control flow channel (4.5) are respectively connected to two ends of the control valve core (15), a thimble (11) is provided at one end of the control valve core (15), and the thimble (11) is connected to a sewage discharge valve core (10), a sealing port is provided in the valve core slideway (4.6) and is sealed with the sewage discharge valve core (10), and the sealing port is located between the sewage discharge port and the sewage discharge flow channel (4.2).

2. The dust removal device according to claim 1, characterized in that: The elastic valve core assembly comprises a valve core that is sealed and arranged between the sewage outlet and the sewage discharge channel (4.2); one end of the valve core that faces away from the sewage outlet is supported by a first elastic component; when the pressure in the medium flow channel is greater than the elastic force of the first elastic component, the valve core moves axially, and the sewage outlet is connected to the sewage discharge channel (4.2).

3. The dust removal device according to claim 2, characterized in that: The end surface area of ​​the end of the control valve core (15) connected to the first control flow channel (4.4) is larger than the end surface area of ​​the end connected to the second control flow channel (4.5).

4. The dust removal device according to any one of claims 1 to 3, characterized in that: The sewage discharge valve core (10) comprises a cylinder facing the sewage discharge port, an end of the cylinder facing away from the sewage discharge port being connected to a sealing surface that seals with the sealing port, a diameter of the cylinder being smaller than a diameter of the valve core slideway (4.6), and a sewage discharge hole being provided on the outer peripheral wall of the cylinder.

5. The dust removal device according to claim 4, characterized in that: A sewage valve core guide sleeve (8) that is slidably engaged with the sewage valve core (10) is provided in the valve core slideway (4.6), and a third elastic component is provided between the sewage valve core guide sleeve (8) and the sewage valve core (10).

6. The dust removal device according to claim 5, characterized in that: A protruding structure that slidably cooperates with the inner wall of the valve core slideway (4.6) is provided on the outer peripheral wall of the sewage valve core (10), and the third elastic component is provided between the protruding structure and the end of the sewage valve core guide sleeve (8).

7. The dust removal device according to any one of claims 1-3, 5-6, characterized in that: A thimble guide sleeve (12) is provided in the valve core slideway (4.6) and is slidably engaged with the thimble (11). Both ends of the thimble (11) are respectively engaged with the control valve core (15) and the sewage valve core (10).

8. The dust removal device according to claim 7, characterized in that: One end of the control valve core (15) communicating with the first control flow channel (4.4) is positioned by a control valve core elastic retaining ring (7.5), and the other end communicating with the second control flow channel (4.5) is provided with a control valve core guide sleeve elastic retaining ring (7.4); a control valve core guide sleeve (13) that is slidably engaged with the control valve core (15) is provided on the side of the control valve core guide sleeve elastic retaining ring (7.4) facing the control valve core (15); and the second elastic component is provided between the control valve core guide sleeve (13) and the control valve core (15).

9. The dust removal device according to claim 8, characterized in that: The outer peripheral wall of the control valve core (15) is provided with a protruding structure that slidably cooperates with the inner wall of the valve core slideway (4.6), and the second elastic component is provided between the protruding structure and the end of the control valve core guide sleeve (13).

10. The dust removal device according to any one of claims 1-3, 5-6, 8-9, characterized in that: The medium flow channel comprises a water flow channel and a foam flow channel (18) which are independently arranged, and the nozzle comprises a water mist nozzle (2) connected to the water flow channel and a foam nozzle (3) connected to the foam flow channel (18).

11. A dust removal method, characterized in that: According to any one of claims 1 to 10, the dust removal device is used, wherein the external medium enters the filter element (6) through the inlet flow channel of the dust removal device body (1), wherein the internal dirt and residue are filtered and stored inside the filter element (6), and the filtered medium enters each nozzle through the outlet flow channel for dust removal; The invention also includes an automatic sewage discharge method: dirt and residue stored in the filter element (6) will increase the pressure difference between the inlet flow channel and the outlet flow channel, and the medium will reach the two ends of the control valve core (15) through the first control flow channel (4.4) and the second control flow channel (4.5), respectively. The pressure difference forms an axial thrust of the control valve core (15). When the axial thrust overcomes the elastic force of the second elastic component, the control valve core (15) moves axially, thereby pushing the ejector pin (11) and the sewage discharge valve core (10) to move axially synchronously, so that the sewage discharge valve core (10) and the valve core slideway (4.6) are released from the seal. Under the action of the inlet flow channel medium, the dirt and residue stored in the filter element (6) successively enter the sewage discharge valve core (10), the gap between the sewage discharge valve core (10) and the valve core slideway (4.6), and the sewage discharge flow channel (4.2), thereby completing the sewage discharge process; After the dirt and residue inside the filter element (6) are discharged, the water in the water inlet channel (4.3) can reach the water delivery channel (4.1) through the filter element (6), the water flow is restored to be smooth, the pressure difference between the inlet channel and the outlet channel is reduced, and the medium reaches the two ends of the control valve core (15) through the first control channel (4.4) and the second control channel (4.5) respectively. The pressure difference generated cannot overcome the elastic force of the second elastic component, and the second elastic component pushes the control valve core (15) to reset.

12. The dust removal method according to claim 11, characterized in that: It also includes a multi-mode dust removal method, which uses water and foam dual-flow channels for dust removal. In coal tunnel cutting and other application conditions, foam water flows through the foam flow channel (18) of the dust removal device body (1) to reach the foam nozzle (3), thereby realizing the foam dust removal mode; in hard rock or coal rock cutting and dust removal conditions, the dust is switched to the water mist mode for dust removal, and water flows through the inlet flow channel, filter element (6), and outlet flow channel of the dust removal device body (1) to reach the water mist nozzle (2), thereby realizing the water mist dust removal mode; or the foam dust removal mode and the water mist dust removal mode are used simultaneously or intermittently.

13. A dust removal method, characterized in that: With the dust removal device according to claim 2, the external medium enters the filter element (6) through the inlet flow channel of the dust removal device body (1), wherein the internal dirt and residue are filtered and stored inside the filter element (6), and the filtered medium enters each nozzle through the outlet flow channel for dust removal; The invention also includes an automatic sewage discharge method: the dirt and residue stored in the filter element (6) will increase the pressure of the inlet flow channel. When the pressure increase overcomes the elastic force of the first elastic component, the valve core is pushed axially, so that the sewage outlet is connected to the sewage discharge flow channel (4.2) and the isolation is released. The dirt and residue stored in the filter element (6) enter the sewage discharge flow channel (4.2) in sequence under the pressure of the inlet flow channel medium, thereby completing the sewage discharge process.

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