Gravity check valve and portable respirator

Abstract

The present invention provides a gravity one-way flow-stop valve and a portable respirator, wherein the gravity one-way flow-stop valve has a valve body and a first inlet and a second inlet and a second inlet opened on the valve body, wherein the valve body is internally constructed with a valve cavity connected to the first inlet and the second inlet, and the main body of the valve cavity is constructed as a movable cavity that allows the valve core of the gravity one-way flow-stop valve to reciprocate; the joint between the first inlet and the inner wall of the valve cavity is constructed as a valve core mating surface that can be tightly fitted with the valve core, and when the valve core slides down or rolls to the valve core mating surface along the movable cavity due to gravity, it can prevent the fluid entering the gravity one-way flow-stop valve from the second inlet and the outflow through the first inlet and a valve can be prevented. This embodiment relates to a gravity one-way flow-stop valve, which can solve the problem of difficult gas and liquid mixed flow control in a device with a tilting posture change.

Description

Technical Field

[0001] The present invention relates to the field of fluid control technology, in particular to a gravity one-way flow-stop valve. Meanwhile, the present invention also relates to a portable respirator. Background Art

[0002] In some devices or equipment in dynamic motion, their posture often tilts, while the liquid surface inside them remains horizontal under the action of gravity; when the liquid and gas need to be in contact, and in order to prevent the liquid in the cavity from flowing back into the gas path, it is necessary to add a control valve in the gas path and detect the tilting of the posture to implement control. This kind of control is difficult to achieve with the existing automatic control valve and posture detection element, and the implementation cost is high.

[0003] For example, in a severely polluted or specific toxic and harmful environment, it is necessary to wear a gas mask or respirator. Among them, for the treatment of harmful gases in the air, a treatment liquid is often used. The specific harmful gases in the air are removed through the reaction of the air with the treatment liquid. The treated air is then transported to the mask at the mouth and nose for inhalation. However, when the human body changes its posture during movement, liquid may flow back into the air path, seriously affecting the use of the breathing device. Therefore, there is an urgent need to achieve good gas and liquid mixed flow control under the condition of posture change and dumping. Summary of the invention

[0004] In view of this, the present invention aims to propose a gravity one-way check valve to solve the problem of difficult control of mixed flow of gas and liquid in a device with tilting posture changes.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A gravity one-way flow-stop valve comprises a valve body and a first inlet and a second inlet and a second inlet opened on the valve body, wherein the valve body is internally constructed with a valve cavity connected to the first inlet and the second inlet, and the main body of the valve cavity is constructed as a movable cavity that allows the valve core of the gravity one-way flow-stop valve to move back and forth; the joint between the first inlet and the inner wall of the valve cavity is constructed as a valve core mating surface that can be tightly fitted with the valve core, and when the valve core slides down or rolls to the valve core mating surface along the movable cavity due to gravity, it can prevent the fluid that enters the gravity one-way flow-stop valve from the second inlet and the flow out through the first inlet and the second inlet.

[0007] Furthermore, a drainage groove is provided at the bottom of the movable cavity along the arrangement direction of the movable cavity, and a drainage hole communicating with the outside is provided at one end of the drainage groove away from the first inlet and outlet.

[0008] Furthermore, the valve core is a sphere, and the movable distance of the valve core in the movable cavity is more than 2.5 times the diameter of the valve core.

[0009] Furthermore, the second entrance and exit are opened above the movable cavity.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] (1) The gravity one-way flow-stop valve described in the present invention has a movable cavity constructed on the inner wall of the valve cavity and is equipped with a valve core that can slide or roll in the movable cavity under the action of gravity; when the flow-stopping action of the valve core is triggered by the inclination of the gravity one-way flow-stop valve, the one-way shut-off of the gravity one-way flow-stop valve can be achieved, which is suitable for scenarios where two-way conduction is normally required, but one-way shut-off is required when the horizontal posture is tilted to a certain extent; it is conducive to meeting the needs of gas and liquid mixed flow control in a device with a tilting posture change.

[0012] (2) The setting of the drain hole can timely drain the liquid that enters the gravity one-way flow-stop valve when a large tilt occurs, which is beneficial to improving the one-way flow-stopping performance of the gravity one-way flow-stop valve for the liquid.

[0013] (3) A spherical valve core is used, so that the valve core is triggered by rolling, which is beneficial to improving the response sensitivity of the gravity one-way flow check valve.

[0014] (4) The second inlet and outlet are arranged above the movable cavity, so that the first inlet and outlet and the second inlet and outlet are roughly distributed at right angles, which is more suitable for the separate control of the flow of gas and liquid in the case of mixing; when the gravity one-way flow-stop valve is installed horizontally, the second inlet and outlet are opened roughly upward, and the liquid splashing below is difficult to enter the gravity one-way flow-stop valve.

[0015] Another object of the present invention is to provide a portable respirator, comprising a main processing device capable of purifying air, the main processing device having a cavity formed by a shell, and a filter unit disposed in the cavity; the main processing device can be freely rotatably mounted on the portable respirator around its own central axis, and an air inlet and an air outlet for gas to enter and exit the cavity are disposed close to the top of the shell and at both ends of the shell; due to the counterweight at the bottom of the shell, the air inlet and the air outlet can be maintained above the central axis;

[0016] The cavity is partially filled with a treatment liquid, the filter unit is driven and rotatably disposed between the gas inlet and the gas outlet, the treatment liquid constitutes the filter unit partially immersed in the treatment liquid; a channel for the gas to flow through is formed above the liquid surface of the treatment liquid; the gas passes through the filter unit with the treatment liquid attached during the flow;

[0017] The gravity one-way stop valve of the present invention is installed at the air inlet and the exhaust port in the cavity; when the central axis deviates from the horizontal plane and causes the treatment liquid to approach the gravity one-way stop valve, the valve body of the approaching gravity one-way stop valve is triggered and moves toward the first inlet and outlet, thereby preventing the treatment liquid from flowing out of the cavity.

[0018] Furthermore, the filter unit is a rotating body, and the cavity where the filter unit is located has a space for the filter unit to rotate in a sealed manner in the cavity.

[0019] Furthermore, the filter unit includes a frame, and a plurality of thin-walled filter bodies arranged in the frame.

[0020] Furthermore, the filter body is a porous filter structure or an adsorbent.

[0021] Furthermore, the cavity is divided into two chambers by a partition plate fixed on the shell, and each chamber is partially filled with the treatment liquid and is provided with at least one filter unit; two gravity one-way stop valves are symmetrically and connectedly installed on both sides of the upper part of the partition plate; when the central axis deviates from the horizontal plane and causes the treatment liquid to approach either of the two gravity one-way stop valves, the valve body of the gravity one-way stop valve that is approached is triggered and moves toward the first inlet and outlet, thereby preventing mixing of the treatment liquids in the two chambers.

[0022] Furthermore, a material holding basket is arranged in the cavity, and a filling port facing the material holding basket is opened in the upper part of the shell. The main processing device also includes a stuffing box that can be inserted into the material holding basket through the filling port, and the stuffing box is filled with filler that can improve the processing performance of the processing liquid.

[0023] Compared with the prior art, the portable respirator proposed by the present invention has the following advantages:

[0024] (1) The portable respirator described in the present invention contains part of the treatment liquid in the cavity inside the shell, and the filter unit is partially immersed and rotatably installed in the shell; when the gas flows through the filter unit, the dust in the gas can be removed due to the interception of the filter unit and the attachment of the treatment liquid, and the harmful gas in the gas can also be reacted or dissolved and absorbed by the adapted treatment liquid; the intercepted dust or absorbed substances can also be flushed into the treatment liquid and leave the filter unit; so that the portable respirator not only has a good gas treatment effect, but also the filter material in the filter unit has a longer life due to timely flushing, which is beneficial to the reduction of gas treatment and purification costs. The configuration of the freely rotating installation structure and the gravity one-way check valve enables the portable respirator to meet the requirements of portability, and will not cause the treatment liquid to flow out of the main treatment device due to the change of the posture of the portable respirator, thereby ensuring the performance of the portable respirator.

[0025] (2) The filter unit is in the shape of a rotating body, which is conducive to the rotation arrangement of the filter unit, so that the filter unit can separate the cavity well, thereby creating good conditions for the circulation and filtration of the gas.

[0026] (3) The predetermined filtering effect can be achieved by using one or more layers of filter bodies, and the thin-walled structure supported by the frame is suitable for filtering needs.

[0027] (4) The use of filter screens and filter cloths is easy to equip, suitable for flushing and cleaning, and highly durable. The use of filter discs made of activated carbon or filter stone is conducive to the capture and adsorption of harmful gases in the gas, and helps to neutralize the reaction between harmful gases and matching treatment liquids.

[0028] (5) The two-chamber structure can be used to configure two treatment liquids with different properties for the main treatment device, so as to specifically treat different types of harmful gases in the treatment liquid.

[0029] (6) A material holding basket is provided in the cavity, and fillers such as limestone and calcite are conveniently added through a filler box. As the filler slowly dissolves, the alkalinity of the treatment liquid can be maintained, which is beneficial to the neutralization reaction of sulfides, nitrogen oxides, etc. in the gas after they are dissolved in the treatment liquid, thereby continuously improving the treatment performance of the treatment liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which constitute part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention. The directional terms such as front and back, up and down, etc. involved therein are only used to indicate relative positional relationships and do not constitute improper limitations on the present invention. In the accompanying drawings:

[0031] Figure 1 It is a schematic cross-sectional structure diagram of the gravity one-way flow-stop valve according to the first embodiment of the present invention;

[0032] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the part indicated by CC in the middle;

[0033] Figure 3 It is a structural schematic diagram of the gravity one-way flow-stopping valve according to the first embodiment of the present invention, which triggers the valve core to move and stop the flow when the valve core is tilted;

[0034] Figure 4 This is a schematic diagram of the overall structure of the portable respirator according to the second embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the internal layout structure of the respirator backpack according to the second embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the overall structure of the main processing device according to the second embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the overall structure of the main processing device according to the second embodiment of the present invention from another perspective;

[0038] Figure 8 This is a schematic diagram of the internal structure of the main processing device according to the second embodiment of the present invention;

[0039] Fig. 9 for Figure 6 Schematic diagram of the cross-sectional structure of the part indicated by AA;

[0040] Fig.10 for Fig. 9 A partial enlarged view of the part shown in B;

[0041] Fig.11 It is a schematic diagram of the structural relationship of the stuffing box according to the second embodiment of the present invention being inserted into the material containing basket;

[0042] Description of reference numerals:

[0043] 1-shell, 100-lower shell, 101-inlet side plate, 102-exhaust side plate, 103-sedimentation tank, 104-packaging flange, 105-fastening bolt, 106-inlet, 107-rotation bearing, 108-exhaust, 109-partition plate, 110-upper shell, 120-filling port, 121-first filling port, 122-second filling port; 130-waste storage bin, 131-first waste storage bin, 132-second waste storage bin, 133-discharge port, 709-air storage bag, 140-material storage basket, 141-first material storage basket, 142-second material storage basket, 143-stuffing box, 1430-material cavity, 1431-supporting flange, 1432-avoidance portion, 1433-through hole, 144-through hole, 2-filter unit; 20 0-filter body, 201-frame, 202-support frame, 203-rotating shaft, 204-motor, 205-bearing, 206-shaft seal, 207-sealing body, 21-first filter unit, 22-second filter unit, 6-breathing mask, 7-respirator backpack, 701-conveying pipe, 702-return pipe, 703-inlet pipe, 704-exhaust pipe; 705-battery, 706-dehumidification unit, 707-temperature adjustment unit, 708-sterilization unit, 8-gravity one-way check valve, 80-valve chamber, 800-moving axis, 801-valve body, 802-first inlet and outlet, 803-second inlet and outlet, 804-drainage hole, 805-thread plug, 806-valve core, 807-valve core mating surface, 808-moving cavity, 809-drainage groove. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0045] In addition, in the description of the present invention, the directional nouns such as left, right, up, and down are used for the convenience of description and are based on the diagram state, and should not be understood as constituting a limitation on the structure of the present invention; the first, second, third, etc. mentioned are also for the convenience of description and cannot be understood as indicating or implying relative importance.

[0046] Embodiment 1

[0047] The present embodiment relates to a gravity one-way flow-stop valve, which can solve the problem that it is difficult to control the mixed flow of gas and liquid in a device with a tilting posture. The gravity one-way flow-stop valve has a valve body and a first inlet and a second inlet and a second inlet opened on the valve body. The valve body is internally configured with a valve cavity connected to the first inlet and the second inlet, and the main body of the valve cavity is configured as a movable cavity that allows the valve core of the gravity one-way flow-stop valve to reciprocate; the joint between the first inlet and the inner wall of the valve cavity is configured as a valve core mating surface that can be tightly fitted with the valve core. When the valve core slides down or rolls to the valve core mating surface along the movable cavity due to gravity, it can prevent the fluid that enters the gravity one-way flow-stop valve from the second inlet and the flow out through the first inlet and the second inlet.

[0048] Based on the above-mentioned overall structural principle, the present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. An exemplary structure of the gravity one-way flow-stop valve of this embodiment is as follows: Figure 1 As shown, it has a valve body 801, and the valve body 801 can be made of plastic or metal, preferably made of stainless steel. The valve body 801 is provided with a first inlet and outlet 802 and a second inlet and outlet 803. The valve body 801 is internally configured with a valve cavity 80 that is connected to the first inlet and outlet 802 and the second inlet and outlet 803. The main part of the valve cavity 80 is configured as a moving cavity 808 that allows the valve core 806 of the gravity one-way flow-stop valve 8 to reciprocate; the joint between the first inlet and outlet 802 and the inner wall of the valve cavity 80 is configured as a valve core matching surface 807 that can be tightly fitted with the valve core 806. When the valve core 806 slides down or rolls to the valve core matching surface 807 along the moving cavity 808 due to gravity, it can prevent the fluid that enters the gravity one-way flow-stop valve 8 from the second inlet and outlet 803 from flowing out through the first inlet and outlet 802.

[0049] Combination Figure 2 As shown, along the arrangement direction of the movable cavity 808, a drainage groove 809 is provided at the bottom of the movable cavity 808, and a drainage hole 804 connected to the outside is provided at one end of the drainage groove 809 away from the first inlet and outlet 802. When the gravity one-way stop valve 8 is in the working environment, due to the tilting posture, the liquid easily enters the valve cavity 80, and due to the blocking of the valve core 806, the liquid cannot flow out through the first inlet and outlet 802. When the posture is restored, the drainage hole 804 is at the bottom, and the liquid in the valve cavity 80 will be discharged along it, further preventing the liquid from flowing back to the side of the first inlet and outlet 802. When the drainage function is not needed, a screw plug 805 can be screwed and installed in the drainage hole 804, so that the applicability of the gravity one-way stop valve 8 is better. This design that can timely empty the liquid that enters the gravity one-way stop valve 8 when a large tilt occurs is conducive to improving the one-way stop performance of the gravity one-way stop valve 8 for liquid.

[0050] The shape of the valve core 806 can be flexibly designed, but in order to improve the responsiveness of the gravity one-way check valve 8, the valve core 806 is preferably a sphere, so that the valve core 806 can roll when triggered. Moreover. The movable distance of the valve core 806 in the moving cavity 808 is preferably set to be more than 2.5 times the diameter of the valve core 806. Such a moving distance is convenient for the layout of the second inlet and outlet 803. Obviously, the material of the valve core 806 can also be stainless steel, so as to facilitate the processing of a smooth surface, and the specific gravity is heavier than the specific gravity of the liquid in the working environment. The valve core 806 is a spherical valve core 806.

[0051] Based on the above structure, the second inlet and outlet 803 and the first inlet and outlet 802 can be connected to the pipeline in various ways such as threaded connection or quick plug; they can be arranged on the same axis or form a certain angle with each other. Figure 1 or Figure 3 As shown, the second inlet and outlet 803 is opened above the movable cavity 808, and is preferably arranged perpendicular to each other. The second inlet and outlet 803 is arranged above the movable cavity 808, so that the first inlet and outlet 802 and the second inlet and outlet 803 are roughly distributed in a right angle, which is more suitable for the separate control of the flow of gas and liquid in the case of mixing; when the gravity one-way stop valve 8 is installed horizontally, the second inlet and outlet 803 is opened roughly upward, and the splashing liquid located below is difficult to enter the gravity one-way stop valve 8.

[0052] The gravity one-way flow-stop valve described in this embodiment is used as follows: Figure 1 Combined with Figure 3 As shown, when it tilts with the device it is in, Figure 1 When the moving axis 800 shown in the figure rotates counterclockwise to horizontal, the moving cavity 808 also becomes horizontal. If it tilts and flips further, the valve core 806 rolls toward the first inlet and outlet 802 until the valve core mating surface 807 is blocked. At this time, the liquid entering the valve cavity 80 through the second inlet and outlet 803 or the drain hole 804 will not be able to flow out through the first inlet and outlet 802. Therefore, when the gravity one-way flow-stop valve 8 is installed on the device, it is necessary to consider that when the device is tilted and the liquid surface approaches the gravity one-way flow-stop valve 8, the moving axis 800 should be parallel to the liquid surface. If it is further tilted, the moving axis 800 rotates counterclockwise, thereby realizing the flow-stopping function.

[0053] The gravity one-way stop valve of the above-mentioned implementation scheme constructs a movable cavity 808 on the inner wall of the valve cavity 80 and is equipped with a valve core 806 that can slide or roll in the movable cavity 808 under the action of gravity; when the stop-flow action of the valve core 806 is triggered due to the inclination of the gravity one-way stop valve 8, the one-way shut-off of the gravity one-way stop valve 8 can be achieved, which is suitable for scenarios where two-way conduction is normally required, but one-way shut-off is required when the horizontal posture has a certain inclination; it is beneficial to meet the needs of gas and liquid mixed flow control in the posture tilting change device.

[0054] Embodiment 2

[0055] Based on an application of the gravity one-way flow-stop valve 8 described in the first embodiment, this embodiment provides a portable respirator. Figure 4 , Figure 5 As shown, the portable respirator includes a breathing mask 6, a respirator backpack 7, and a delivery pipe 701 and a return pipe 702 connected therebetween. The breathing mask 6 can be a mature structure in the prior art, which at least covers the mouth and nose of the face. Functional units such as a main processing device, a battery 705, a dehumidification unit 706, a temperature control unit 707, a sterilization unit 708, and an air storage bag 709 are assembled in the respirator backpack 7. In order to facilitate the user to carry it with him, the respirator backpack 7 here can adopt the backpack structure in the prior art, so that it can be carried on the body without affecting the normal movement of the user. The battery 705 is placed at the bottom of the respirator backpack 7 to power the motor of the main processing device and the drainage pump in the air circuit. In order to keep the posture of the main processing device unchanged when the human body is tilted in the front and back directions, thereby ensuring that the liquid level of the processing liquid inside the main processing device changes, or even runs out of the main processing device and enters the air circuit, such as Figure 6 , 7 As shown, the main processing device needs to be installed in the respirator backpack 7 of the portable respirator so that it can rotate freely around its own central axis. In this embodiment, the main processing device is preferably in the shape of a cylinder, and a self-rotating bearing 107 is installed at the two ends of its shell 1, namely, the outer periphery of the exhaust end side plate 102 and the air inlet end side plate 101. The self-rotating bearing 107 is fixed in the respirator backpack 7. The body of the main processing device can rotate freely in the self-rotating bearing 107. By using the counterweight at the bottom of the shell 1, for example, the battery 705 can be fixedly hoisted at the bottom of the shell 1, so that the bottom of the shell 1 is uniformly and horizontally located below when the axis is horizontal under gravity. This ensures that the processing liquid in the shell 1 will not flow out from the air inlet 106 or the exhaust port 108 due to the human body tipping forward and backward.

[0056] Still Figure 5As shown, a dehumidification unit 706, a temperature control unit 707 and a sterilization unit 708 are respectively arranged above the shell 1 of the main processing device. The air entering the portable respirator from the air inlet pipe 703 first passes through the main processing device, and the purified gas passes through the dehumidification unit 706, the temperature control unit 707 and the sterilization unit 708 in turn, and is then transported to the breathing mask 6 through the delivery pipe 701; the gas exhaled by the human body can return to the respirator backpack 7 through the reflux pipe 702. In order to ensure that the exhaled gas may carry pathogens, a set of main processing devices can be configured in the respirator backpack 7 to process the exhaled gas. The exhaled gas can then be further disinfected and purified by the sterilization unit 708 and other units before being discharged to the outside through the exhaust pipe 704.

[0057] Based on the above structure, the portable respirator in this embodiment, in order to meet the dynamic requirements of the human body during use and adapt to the situation of the human body tipping over and posture changes, in addition to overcoming the front and back tilting of the human body by setting a rotation bearing 107; the situation where the human body tilts to the left or right or changes its posture is solved by adding the gravity one-way stop valve described in Example 1 in the main processing device.

[0058] like Figure 8 , 9 As shown, the main processing device has a cavity formed by a shell 1 and a filter unit 2 disposed in the cavity. The main processing device can be freely rotatably mounted on the portable respirator around its central axis, and an air inlet 106 and an air outlet 108 for gas to enter and exit the cavity are disposed near the top of the shell 1 and at both ends of the shell 1. Due to the counterweight at the bottom of the shell 1, the air inlet 106 and the exhaust port 108 can be maintained above the central axis; the cavity is partially filled with treatment liquid, and the filter unit 2 is driven to rotate and separate between the air inlet 106 and the exhaust port 108, and is partially immersed and flushed in the treatment liquid; the gas passes through the filter unit 2 soaked with the treatment liquid, and due to the interception of the filter unit 2 and / or the action of the treatment liquid, the harmful substances in the gas are removed and / or separated; at the air inlet 106 and the exhaust port 108 in the cavity, a gravity one-way stop valve according to any one of claims 1 to 4 is installed; when the central axis deviates from the horizontal plane and causes the treatment liquid to approach the gravity one-way stop valve 8, the valve body 801 of the gravity one-way stop valve 8 that is approached is triggered and moves toward the first outlet 802, thereby preventing the treatment liquid from flowing out of the cavity.

[0059] By filling part of the treatment liquid in the cavity in the shell 1, the filter unit 2 is partially immersed and rotatably installed in the shell 1; when the gas flows through the filter unit 2, the dust in the gas can be removed due to the interception of the filter unit 2 and the attachment of the treatment liquid, and the harmful gas in the gas can also be reacted or dissolved and absorbed by the adapted treatment liquid; the intercepted dust or absorbed substances can also be flushed into the treatment liquid and leave the filter unit 2; so that the portable respirator not only has a good gas treatment effect, but also the filter material in the filter unit 2 has a longer life due to timely flushing, which is conducive to reducing the cost of gas treatment and purification. The configuration of the freely rotating installation structure and the gravity one-way check valve 8 enables the portable respirator to meet the requirements of portability, and will not cause the treatment liquid to flow out of the main treatment device due to the change of the posture of the portable respirator, thereby ensuring the performance of the portable respirator.

[0060] As for the specific structure of the main processing device, a preferred structure is: the housing 1 is constructed into a lower housing 100 and an upper housing 110, and the air inlet side plate 101 and the exhaust side plate 102 at both ends of the housing 1 can be integrally constructed with the lower housing 100. After the filter unit 2 and other components are assembled into the cavity of the housing 1 through the opening on the top of the housing 1, the upper housing 110 is covered, and the lower housing 100 and the upper housing 110 are sealed and matched by the packaging flange 104, and fastened by the fastening bolts 105 to form a closed cavity.

[0061] The air inlet 106 of the cavity can be arranged on the air inlet end side plate 101, and the exhaust port 108 can be arranged on the exhaust end side plate 102. Obviously, at least the exhaust port 108 needs to be opened close to the upper part of the shell 1 to allow the respirator to have a larger tilt angle, and it is not easy for the treatment liquid to submerge the exhaust port 108 or the air inlet 106. The filter unit 2 is arranged in the cavity, separating the air inlet 106 and the exhaust port 108, and the filter unit 2 adopts a rotatable assembly structure, which can be driven to rotate by external force. In this embodiment, the filter unit 2 is fixed on the rotating shaft 203, one end or both ends of the rotating shaft 203 are penetrated on the shell 1, and one end thereof passes through the side wall of the shell 1 and is exposed to the outside of the shell 1. A motor 204 is installed at this end, and the motor 204 drives the filter unit 2 to rotate in the cavity. Preferably, a bearing 205 and a shaft seal 206 are installed at the position where the rotating shaft 203 passes through the side wall of the housing 1, and bearings 205 are also installed at other pivoting and fixing positions of the rotating shaft 203 to improve the rotation stability of the rotating shaft 203 in the cavity.

[0062] like Fig. 9 Combined with Fig.10As shown, the filter unit 2 is preferably a body of revolution. The outside of the housing 1 is in principle to facilitate the fixing of the device. The filter unit 2 in the housing 1 adopts a body of revolution shape. To ensure its good rotation operation, the cavity where the filter unit 2 is located has a space for the filter unit 2 to rotate in the cavity in a sealed manner; for the convenience of construction, the cavity is preferably in the shape of a cylinder. Of course, except for the space part for the filter unit 2 to rotate, the shape of the cavity and other parts of the housing 1 can be constructed in various shapes as needed. The filter unit 2 adopts a body of revolution shape, which is conducive to the rotation arrangement of the filter unit 2, and the filter unit 2 can separate the cavity well, thereby creating good conditions for the circulation and filtration of the gas. On the filter unit 2, it includes a frame 201 and several layers of thin-walled filter bodies 200 arranged in the frame 201. Using one or more layers of filter bodies 200 for filtration can achieve a predetermined filtering effect, and the thin-walled structure supported by the frame 201 is suitable for filtering needs.

[0063] In order to achieve a good filtering effect, in this embodiment, the filter unit 2 is designed to be disc-shaped. When a layer of filter body 200 is arranged, the filter body 200 can be flat or convex. Preferably, the filter body 200 is in a curved surface convex toward the flow direction of the gas. The filter body 200 with a curved surface structure can use centrifugal force to throw out solid impurities attached to the filter body 200, which is helpful for cleaning the filter body 200. Fig. 9 and Fig.10As shown, for the specific structure of the filter unit 2, in order to enhance its stability, a support frame 202 can be installed between the central component fixed on the rotating shaft 203 of the filter unit 2 and the frame 201; wherein the frame 201 can be designed to be cylindrical, and the treatment liquid or solid objects thrown out by the filter body 200 are blocked and collected by the frame 201, and enter the treatment liquid with it; of course, the filter body 200 can also be installed on the upstream side of the gas flow direction of the frame 201, so that the treatment liquid or solid objects thrown out by the filter body 200 are directly thrown into the treatment liquid. In order to maintain the relative isolation effect on both sides of the filter unit 2, a soft and wear-resistant sealing body 207 can be installed on the outside of the frame 201 to form a certain sealing between the frame 201 and the inner wall of the housing 1, for example, a rubber ring made of wear-resistant rubber, or a dense brush or a high-sealing bearing can be used. At the same time, a boss supporting the frame 201 can be constructed on both sides or the downstream side of the frame 201 and on the inner wall of the cavity to increase the stability of the filter unit 2 when it is impacted by airflow. An annular protrusion is provided on the inner wall surface of the cavity, which is arranged on both sides of each filter unit 2, and a plurality of rolling elements are provided between the annular protrusion and the filter unit 2. In terms of specific structure, a bracket is provided on the side of the annular protrusion facing the corresponding filter unit 2, and the rolling element is a ball positioned and installed on the bracket. A slideway for the ball to slide is provided on the outer frame. Here, by providing the annular protrusion and the rolling element, the bearing capacity of the housing 1 on the filter unit 2 can be increased. At the same time, the rolling friction is used to increase the stability and effectively reduce the friction of the filter unit 2 during the rotation process, thereby reducing the wear during use.

[0064] The material of the filter body 200 can be a filter cloth, a filter screen, or a porous filter structure or adsorbent, such as a filter disc made of activated carbon or filter stone. When there are multiple layers of filter bodies 200 in the same filter unit 2, each filter body 200 can use the same filter material or a combination of multiple filter materials. When a filter screen is used, it can be a metal mesh, a plastic fiber mesh, etc., which can be flexibly selected according to the pollutants contained in the gas; the filtration fineness of the mesh, that is, the mesh number specification of the mesh, can be equipped according to the gas treatment requirements. When the filter body 200 uses a filter screen, it is easy to equip, and has the characteristics of being suitable for flushing and cleaning, and high durability. When the filter body 200 is an activated carbon filter disc, since activated carbon also has a good adsorption effect in water, it can absorb various gases such as sulfur dioxide in the gas. These adsorbed substances can be dissolved in the treatment liquid due to the flushing of the treatment liquid, or react and neutralize with the treatment liquid, thereby playing a role in cleaning and restoring the performance of the activated carbon. Moreover, in the application scenario of this embodiment, many problems in the existing application of activated carbon are overcome. For example, when the existing activated carbon is used in the airflow, the adsorption effect and the ability to promote the reaction of harmful gases with the treatment liquid cannot be exerted due to the lack of liquid wetting; when the activated carbon is statically immersed in water, due to the lack of the rotating flushing of the activated carbon disc in the treatment liquid, after a period of use, the activated carbon will absorb more impurities, and without the necessary cleaning, the performance of the activated carbon will quickly decline and need to be replaced. In the application of this embodiment, the above problems are overcome, so that the activated carbon can exert a long-lasting good adsorption performance.

[0065] Still Fig. 9 As shown, in this embodiment, the cavity is divided into two chambers by a partition plate 109 fixed on the housing 1, and each chamber is partially filled with a treatment liquid and is provided with at least one filter unit 2; two gravity one-way flow-stop valves 8 are symmetrically and connected to each other on both sides of the upper part of the partition plate 109; when the central axis deviates from the horizontal plane and causes the treatment liquid to approach either of the two gravity one-way flow-stop valves 8, the valve body 801 of the gravity one-way flow-stop valve 8 approached is triggered and moves toward the first inlet and outlet 802, thereby preventing the mixing of the treatment liquids in the two chambers. With a two-chamber structure, two treatment liquids with different properties can be configured for the main treatment device to specifically treat different types of harmful gases in the treatment liquid. For example, when sulfur dioxide and ammonia exist in the polluted environment, an alkaline solution can be added to the left chamber in the figure, and an acidic solution can be added to the right chamber. When the air passes through the gravity one-way flow-stop valve 8 and is processed by the two chambers in sequence, it can be treated by neutralization reaction respectively.

[0066] Based on the above structure, in order to further improve the working efficiency of the treatment liquid, such as Fig. 9As shown, the bottom of the shell 1 is constructed with a sedimentation tank 103 that is connected to the cavity and inclined downward against the flow of gas; the sediment captured or generated by the treatment liquid slides to the end of the sedimentation tank 103 through the sedimentation tank 103, and can be discharged through the discharge port opened at the end. The sedimentation tank 103 is constructed at the bottom of the shell 1, which can accumulate and slide out the solid substances suspended or generated by the reaction and slowly settled in the treatment liquid, thereby improving the clarity of the treatment liquid. In this embodiment, a waste storage bin 130 is also provided below the discharge port, which includes a first waste storage bin 131 below the discharge port 133 corresponding to the first filter unit 21, and a second waste storage bin 132 below the discharge port 133 corresponding to the second filter unit 22. They respectively collect solid waste that settles in the corresponding chamber and slides out of the sedimentation tank 103.

[0067] In addition, if Fig. 9 As shown, a plurality of material baskets 140 may be arranged in the cavity, and a plurality of filling ports 120 are opened on the upper shell 110 corresponding to the material baskets 140, and the material baskets 140 may allow the rotating shaft 203 to pass through. The side walls of the material baskets 140 are densely processed with through holes 144. In addition to replenishing the treatment liquid through the filling ports 120, block fillers with a slower dissolution rate may be added to the material baskets 140, such as calcite, limestone, sodium carbonate, etc. With the gradual dissolution and reaction of the fillers, the chemical treatment performance of the treatment liquid may be improved, thereby extending the treatment performance of the device. For example, when calcium carbonate filler is used, it can generate water-soluble calcium bicarbonate in the presence of carbon dioxide and water, which can accelerate the neutralization of the treatment liquid after absorbing acidic gases such as sulfur dioxide. The material baskets 140 may be provided separately, or may be provided in pairs corresponding to the filter unit 2. In this embodiment, if Figure 4 As shown, a first filter unit 21 and a second filter unit 22 are provided. A first container basket 141 and a first filling port 121 are provided corresponding to the first filter unit 21 , and a second container basket 142 and a second filling port 122 are provided corresponding to the second filter unit 22 .

[0068] like Fig. 9 Combined with Fig.11As shown, the main processing device described in this embodiment, in addition to the material holding basket 140 being provided in the cavity between the filter part 2 and the air outlet 108, can also insert the stuffing box 143 into the material holding basket 140 through the filling port 120. The material cavity 1430 of the stuffing box 143 is filled with stuffing that can improve the processing performance of the treatment liquid. When inserted, the supporting flange 1431 of the stuffing box 143 is placed on the outer edge of the filling port 120, and the avoidance part 1432 of the stuffing box 143 can avoid the rotating shaft 203. The through hole 1433 of the stuffing box 143 and the through hole 144 of the material holding basket 140 can realize the contact and conduction between the treatment liquid and the stuffing. A material holding basket 140 is arranged in the cavity, and fillers such as limestone and calcite are conveniently added through a filler box 143. As the filler slowly dissolves, the alkalinity of the treatment liquid can be maintained, which is beneficial to the neutralization reaction of sulfides, nitrogen oxides, etc. in the air after they are dissolved in the treatment liquid under specific environments, thereby continuously improving the treatment performance of the treatment liquid.

[0069] The portable respirator of this embodiment adopts the self-rotating bearing 107 and the gravity one-way stop valve 8 to make the portable respirator have good applicability and can meet the conditions of body tilt at a certain angle during use. Therefore, it is more suitable for portable use, sports use, etc.

[0070] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable respirator, comprising a main processing device capable of purifying air, the main processing device comprising a cavity formed by a housing (1), and a filter unit (2) disposed in the cavity; characterized in that: The main processing device can be mounted on the portable respirator so as to rotate freely around its own central axis. An air inlet (106) and an air outlet (108) for gas to enter and exit the cavity are provided close to the top of the shell (1) and at both ends of the shell (1). Due to the counterweight at the bottom of the shell (1), the air inlet (106) and the air outlet (108) can be maintained above the central axis. The cavity is partially filled with a treatment liquid, the filter unit (2) is driven to rotate and is disposed between the gas inlet (106) and the gas outlet (108), the treatment liquid constituting the filter unit (2) being partially immersed in the treatment liquid; a channel for the gas to flow through is formed above the liquid surface of the treatment liquid; the gas passes through the filter unit (2) with the treatment liquid attached during the flow; A gravity one-way flow-stop valve (8) is installed at the air inlet (106) and the air outlet (108) in the cavity; the gravity one-way flow-stop valve comprises a valve body (801) and a first inlet and outlet (802) and a second inlet and outlet (803) provided on the valve body (801); a valve cavity (80) communicating with the first inlet and outlet (802) and the second inlet and outlet (803) is configured inside the valve body (801); a main body of the valve cavity (80) is configured as a moving cavity (808) that allows a valve core (806) of the gravity one-way flow-stop valve (8) to move back and forth; The joint between the first inlet and outlet (802) and the inner wall of the valve cavity (80) is constructed as a valve core mating surface (807) that can be tightly fitted with the valve core (806). When the valve core (806) slides down or rolls along the movable cavity (808) to the valve core mating surface (807) due to gravity, the fluid that enters the gravity one-way stop valve (8) through the second inlet and outlet (803) can be prevented from flowing out through the first inlet and outlet (802); When the central axis deviates from the horizontal plane and causes the treatment liquid to approach the gravity one-way flow-stop valve (8), the valve body (801) of the gravity one-way flow-stop valve (8) being approached is triggered and moves toward the first inlet and outlet (802), thereby preventing the treatment liquid from flowing out of the cavity.

2. The portable respirator according to claim 1, characterized in that: A drainage groove (809) is provided at the bottom of the movable cavity (808) along the arrangement direction of the movable cavity (808), and a drainage hole (804) communicating with the outside is provided at one end of the drainage groove (809) away from the first inlet and outlet (802).

3. The portable respirator according to claim 2, characterized in that: The valve core (806) is a sphere, and the movable distance of the valve core (806) in the movable cavity (808) is more than 2.5 times the diameter of the valve core (806).

4. The portable respirator according to claim 3, characterized in that: The second entrance (803) is opened above the movable cavity (808).

5. The portable respirator according to claim 1, characterized in that: The filter unit (2) is a rotating body, and the cavity where the filter unit (2) is located has a space for the filter unit (2) to rotate in a sealed manner in the cavity.

6. The portable respirator according to claim 5, characterized in that: The filter unit (2) comprises a frame (201) and a plurality of thin-walled filter bodies (200) arranged in the frame (201).

7. The portable respirator according to claim 6, characterized in that: The filter body (200) is a porous filter structure or an adsorbent.

8. The portable respirator according to any one of claims 1 to 7, characterized in that: The cavity is divided into two chambers by a partition plate (109) fixed on the shell (1), and each chamber is partially filled with the treatment liquid and is provided with at least one filter unit (2); two gravity one-way flow-stop valves (8) are symmetrically and connectedly installed on both sides of the upper part of the partition plate (109); when the central axis deviates from the horizontal plane and causes the treatment liquid to approach either of the two gravity one-way flow-stop valves (8), the valve body (801) of the gravity one-way flow-stop valve (8) that is approached is triggered and moves toward the first inlet and outlet (802), thereby preventing the treatment liquids in the two chambers from mixing.

9. The portable respirator according to claim 8, characterized in that: A material containing basket (140) is arranged in the cavity, and a filling port (120) facing the material containing basket (140) is opened in the upper part of the shell (1), and the main processing device also includes a stuffing box (143) that can be inserted into the material containing basket (140) through the filling port (120), and the stuffing box (143) is filled with a stuffing that can improve the processing performance of the processing liquid.

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