A membrane replacement device in a particle sampler

Abstract

The present invention discloses a membrane replacement device in a particle sampler, comprising: an abutment member 1 with an air inlet channel, a vertical telescopic member 1 and an abutment member 2 with an exhaust channel are installed on a chassis, and the abutment member 1 and the abutment member 2 clamp a support ring together; the support ring abutting against the abutment member 1 can be received by the old membrane transfer member and transported to the old membrane barrel; the new membrane ejection member can push a support ring in the new membrane barrel upward and be received by the new membrane transfer member, and the support ring received by the new membrane transfer member can be translated to face the abutment member 1, and the abutment member 2 moves upward to make the support ring received by the new membrane transfer member seal and abut against the abutment member 1 and the abutment member 2 respectively, and the air inlet channel and the exhaust channel can be connected to the inside of the support ring. The membrane replacement device is small in size and can be flexibly arranged; at the same time, the internal structure of the membrane replacement device is reasonably arranged, the running track of the support ring is simple, and the mechanism for transporting the support ring is also relatively simple, with high reliability.

Description

Technical Field

[0001] The invention relates to the field of environmental protection equipment, and more specifically to a membrane replacement device in a particle sampler. Background Art

[0002] Ambient air particle samplers can collect particles in the air around them to assess the air quality in the area.

[0003] The core component of the ambient air particulate sampler is the filter membrane, which can intercept particulate matter in the air and need to be replaced after running for a period of time. A support ring is fixed on the outside of the filter membrane, which can tighten and flatten the filter membrane. The support ring can be transferred and clamped manually or using a membrane changing device to ensure the airtightness of the filter membrane installation; manual membrane replacement, that is, the staff manually opens the chassis, removes the old membrane and replaces it with a new one; membrane replacement by a membrane changing device, that is, an automatic membrane changing device is installed inside the sampler, which automatically replaces the membrane at intervals, and the staff regularly collects the old membrane in batches and replenishes the new membrane; manual membrane replacement is labor-intensive, and the membrane replacement efficiency is low and the membrane replacement is not timely; membrane replacement using a membrane changing device can achieve automatic membrane replacement, which is fast and saves labor.

[0004] The existing membrane replacement device is bulky, and its actuator is relatively complex for the disassembly and transportation of the new and old filter membranes. The movement path and disassembly method of the new and old membranes are unreasonable, resulting in a high failure rate during later use and the air tightness after the membrane replacement cannot be guaranteed.

[0005] Therefore, how to provide a membrane replacement device in a particulate matter sampler so that it can overcome the above-mentioned problems is an issue that technical personnel in this field urgently need to solve. Summary of the invention

[0006] In view of this, the present invention provides a membrane replacement device in a particle sampler.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A membrane replacement device in a particle sampler is used to replace a filter membrane with a support ring on the outside, comprising:

[0009] The chassis has a first abutment member installed on the top of the chassis. The first abutment member has an air inlet passage running through both ends thereof. One end of the air inlet passage is connected to the external atmosphere, and the other end is located inside the chassis; a vertical telescopic member is installed inside the chassis. A second abutment member is installed at the telescopic end of the first vertical telescopic member. The second abutment member is located directly below the first abutment member. The second abutment member is provided with an exhaust passage running through its outer wall. One end of the exhaust passage is connected to the air inlet end of the air monitoring device; the first abutment member and the second abutment member can respectively abut against both ends of the support ring;

[0010] An old membrane detachment component is installed in the chassis. The old membrane detachment component includes an old membrane transfer member and an old membrane barrel. The support ring abutting against the abutment member can be received by the old membrane transfer member. The support ring received by the old membrane transfer member moves horizontally to the top of the old membrane barrel and then moves downward into the old membrane barrel.

[0011] A new membrane replacement component is installed in the chassis. The new membrane replacement component includes a new membrane barrel, a new membrane ejector and a new membrane transfer component. A plurality of support rings are placed vertically in sequence in the new membrane barrel. The new membrane ejector can eject a support ring in the new membrane barrel upward and be received by the new membrane transfer component. The support ring received by the new membrane transfer component can be translated to a position opposite to the abutment component one, and the abutment component two is moved upward to make the support ring received by the new membrane transfer component seal tightly with the abutment component one and the abutment component two respectively, and the air intake channel and the exhaust channel can be connected to the inside of the support ring.

[0012] It can be known from the above technical scheme that compared with the prior art, the present invention discloses a membrane replacement device in a particle sampler. The present invention designs abutment member 1 and abutment member 2, and abutment member 2 is connected to the telescopic end of the vertical telescopic member 1. Abutment member 1 and abutment member 2 can seal and clamp the support ring to ensure that there is no air leakage in the gap between the support ring and abutment member 1 and the gap between the support ring and abutment member 2; the old membrane transfer member can reliably transfer the old support ring, and the old support ring can reliably fall into the old membrane barrel; by designing the new membrane ejection member , the support ring in the new membrane barrel can be reliably moved out of the new membrane barrel; by designing the new membrane transfer member, the new membrane transfer member can reliably receive the support ring from the new membrane barrel, and transfer the new support ring to a position opposite to the abutment member one, when the new support ring is opposite to the abutment member one, the abutment member two is moved upward to achieve the clamping and limiting of the new support ring; the membrane changing device is small in size and can be flexibly arranged; at the same time, the internal structure of the membrane changing device is reasonably arranged, the running trajectory of the support ring is simple, the mechanism for transporting the support ring is also relatively simple, and the reliability is high.

[0013] Preferably, the old film transfer member includes a mounting plate 1, a limiting ring 1 and a horizontal telescopic member 1. The mounting plate 1 is horizontally fixed in the chassis. A through hole 1 and a through hole 2 are provided on the surface of the mounting plate 1. A contact member 2 is penetrated on the inner side of the through hole 1. A support ring that contacts with the contact member 2 can be arranged on the inner side of the through hole 1; the limiting ring 1 is fixedly connected to the telescopic end of the horizontal telescopic member 1, and one end of the limiting ring 1 is slidably fitted against the upper surface of the mounting plate 1. Both the through hole 1 and the through hole 2 can be positioned opposite to and connected with the limiting ring 1, and the support ring can be embedded on the inner side of the limiting ring 1; the top of the old membrane barrel is open and is arranged below the mounting plate 1. The open end of the old membrane barrel is positioned opposite to and connected with the through hole 2, and the support ring located in the limiting ring 1 can pass through the through hole 2 and move down into the old membrane barrel. The horizontal telescopic member 1 can drive the limiting ring 1 to translate reliably, and the support ring can be embedded in the limiting ring 1. When the limiting ring 1 corresponds to the position of the through hole 1 or the through hole 2, the support ring inside the limiting ring 1 can move down reliably.

[0014] Preferably, the old film detachment assembly further includes an old film lowering member, which includes a bracket 1 and a vertical telescopic member 2. The bracket 1 is vertically slidably arranged in the old film barrel, and the telescopic end of the vertical telescopic member 2 is fixed to the bracket 1. The bracket 1 can hold a plurality of support rings arranged vertically in sequence. The vertical telescopic member 2 can drive the bracket 1 to move downward stably, and the support ring in the limiting ring 1 can be stably moved into the old film barrel, that is, to ensure that the axis of the support ring can be stably arranged vertically when the support ring moves downward.

[0015] Preferably, the new film transfer member includes a second mounting plate, a second limiting ring, and a second horizontal telescopic member. The second mounting plate is horizontally arranged above the first mounting plate. A third through hole and a fourth through hole facing the first through hole are provided on the plate surface of the second mounting plate. A support ring can be arranged inside the fourth through hole. The second limiting ring is fixedly connected to the telescopic end of the second horizontal telescopic member. One end of the second limiting ring slides and fits tightly with the upper plate surface of the second mounting plate. Both the third through hole and the fourth through hole can face and communicate with the second limiting ring. The top of the new film barrel is open and arranged below the second mounting plate. The open end of the new film barrel faces and communicates with the third through hole. The support ring in the new film barrel can pass through the third through hole and be coaxially embedded in the second limiting ring. The second horizontal telescopic member can drive the second limiting ring to translate reliably, and the support ring in the new film barrel can be stably embedded in the second limiting ring.

[0016] Preferably, the new film ejection member includes a bracket 2 and a vertical telescopic member 3, the bracket 2 is vertically slidably arranged in the new film barrel, the telescopic end of the vertical telescopic member 3 is fixed to the bracket 2, and the bracket 2 can hold a plurality of support rings vertically arranged in sequence. The support rings in the new film barrel can be reliably lifted out vertically by the vertical telescopic member 3.

[0017] Preferably, the abutment member 2 is columnar and coaxially slidably and tightly embedded in the through hole 1. The vertical telescopic member 1 is fixed to the inner bottom wall of the chassis. The telescopic end of the vertical telescopic member 1 is hinged to the lower end of the abutment member 2 and the hinge axis of the two is arranged horizontally. The vertical telescopic member 1 is an electric push rod, a cylinder or an oil cylinder. The vertical telescopic member 1 can be reliably fixed in the chassis. At the same time, the telescopic end of the vertical telescopic member 1 can be reliably connected to the abutment member 2. The hinged connection is adopted to facilitate the later disassembly and assembly of the abutment member 2.

[0018] Preferably, the horizontal telescopic member 1, the vertical telescopic member 2, the horizontal telescopic member 2 and the vertical telescopic member 3 are all electric linear modules, the limit ring 1 is fixed to the sliding end of the horizontal telescopic member 1, and the limit ring 2 is fixed to the sliding end of the horizontal telescopic member 2; the side wall of the old film barrel is provided with a vertically arranged long hole 1 for making way, and the sliding end of the vertical telescopic member 2 is fixed to the bracket 1 after passing through the long hole 1 for making way, and the side wall of the new film barrel is provided with a vertically arranged long hole 2 for making way, and the sliding end of the vertical telescopic member 3 is fixed to the bracket 2 after passing through the long hole 2 for making way. The horizontal telescopic member 1, the vertical telescopic member 2, the horizontal telescopic member 2 and the vertical telescopic member 3 can all operate smoothly, and the structure is simple and reliable.

[0019] Preferably, the lower end of the abutment member 1 is grooved and embedded with an annular gasket 1, and the air inlet passage is arranged through the lower end of the abutment member 1; the upper end of the abutment member 2 is grooved and embedded with an annular gasket 2, and the exhaust passage is arranged through the upper end of the abutment member 2; the annular gasket 1 and the annular gasket 2 are tightly abutted against the two ends of the support ring respectively. This design ensures that there is no air leakage between the support ring and the abutment member 1 and between the support ring and the abutment member 2.

[0020] Preferably, the chassis is a vertically arranged rectangular box, the top wall of the chassis is fixed with abutment 1, the bottom wall of the chassis is opened and vertically threaded with threaded push rod 1 and threaded push rod 2; the open end of the old membrane barrel is coaxially provided with an annular step surface 1, and the open end of the new membrane barrel is coaxially provided with an annular step surface 2; the open end of the old membrane barrel is embedded in the through hole 2, and the step surface 1 is tightly against the lower plate surface of the mounting plate 1; the open end of the new membrane barrel is embedded in the through hole 3, and the step surface 2 is tightly against the lower plate surface of the mounting plate 2; the upper end of the threaded push rod 1 can be tightly against the lower end outer wall of the old membrane barrel, and the upper end of the threaded push rod 2 can be tightly against the lower end outer wall of the new membrane barrel; one side of the chassis is opened and removably blocked with a door panel. Both the new membrane barrel and the old membrane barrel are easy to disassemble, which is convenient for the later replenishment of new membranes and the batch removal of old membranes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 It is an overall axonometric diagram of a membrane replacement device in a particle sampler;

[0023] Figure 2 It is a front view of a membrane changing device in a particle sampler;

[0024] Figure 3 yes Figure 2 Sectional view in the AA direction;

[0025] Figure 4 It is an overall exploded axonometric view of a membrane changing device in a particle sampler;

[0026] Figure 5 It is a partially exploded axonometric view of a membrane changing device in a particle sampler;

[0027] Figure 6 It is a partial axonometric view of a membrane changing device in a particle sampler.

[0028] In the figure:

[0029] 1 is a support ring, 2 is a filter membrane, 3 is a chassis, 4 is an abutment member 1, 40 is an air inlet channel, 5 is a vertical telescopic member 1, 6 is abutment member 2, 60 is an exhaust channel, 7 is an old membrane transfer member, 70 is a mounting plate 1, 700 is a through hole 1, 701 is a through hole 2, 71 is a limit ring 1, 72 is a horizontal telescopic member 1, 8 is an old membrane barrel, 80 is a long hole 1 for making way, 81 is a step surface 1, 9 is an old membrane lowering member, 90 is a bracket 1, and 91 is a vertical telescopic member 2. 10 is a new film barrel, 100 is a long hole for making way 2, 101 is a step surface 2, 11 is a new film ejector, 110 is a bracket 2, 111 is a vertical telescopic part 3, 12 is a new film transfer part, 120 is a mounting plate 2, 1200 is a through hole 3, 1201 is a through hole 4, 121 is a limiting ring 2, 122 is a horizontal telescopic part 2, 13 is an annular washer 1, 14 is an annular washer 2, 15 is a threaded push rod 1, 16 is a threaded push rod 2, and 17 is a door panel. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The present invention discloses a membrane replacement device in a particle sampler. The present invention designs an abutment member 1 4 and an abutment member 2 6. The abutment member 2 6 is connected to the telescopic end of the vertical telescopic member 1 5. The abutment member 1 4 and the abutment member 2 6 can seal and clamp the support ring 1, ensuring that there is no air leakage in the gap between the support ring 1 and the abutment member 1 4 and the gap between the support ring 1 and the abutment member 2 6.

[0032] By designing the old film transfer member 7 and the old film barrel 8, the old film transfer member 7 can reliably transfer the old support ring 1, the old support ring 1 can be translated to face the old film barrel 8, and the old support ring 1 can reliably fall into the old film barrel 8, thereby completing the disassembly and collection of the old film;

[0033] By designing the old film lowering member 9, the bracket 90 in the old film lowering member 9 can lift the old support ring 1, so as to prevent the old support ring 1 from being unable to be stably stacked vertically in the old film barrel 8 when the old support ring 1 is moved into the old film barrel 8;

[0034] By designing the new film ejector 11, the support ring 1 in the new film barrel 10 can be reliably removed from the new film barrel 10;

[0035] By designing the new film transfer member 12, the new film transfer member 12 can reliably receive the support ring 1 from the new film barrel 10, and transfer the new support ring 1 to the position facing the abutment member 1 4. When the new support ring 1 faces the abutment member 1 4, the abutment member 2 6 is moved upward to achieve the clamping and limiting of the new support ring 1.

[0036] By designing the threaded push rod 15, the threaded push rod 2 16 and the door plate 17, the new film barrel 10 and the old film barrel 8 can be disassembled by screwing the threaded push rod 15 and the threaded push rod 2 16, so as to facilitate the removal of the old film and the replenishment of the new film;

[0037] The horizontal telescopic member 1 72, the vertical telescopic member 2 91, the horizontal telescopic member 2 122 and the vertical telescopic member 3 111 are all electric linear modules. The horizontal telescopic member 1 72, the vertical telescopic member 2 91, the horizontal telescopic member 2 122 and the vertical telescopic member 3 111 have simple structures, reliable operation and high operation accuracy.

[0038] The old support ring 1 can be embedded in the limiting ring 1 71 and can be transferred with the translation of the limiting ring 1 71; the new support ring 1 can be embedded in the limiting ring 2 121 and can be transferred with the translation of the limiting ring 2 121; the running path of the support ring 1 is simple, thereby realizing the volume reduction of the entire membrane replacement device;

[0039] The new support ring 1 can be reliably moved upward by using the second bracket 110 and the third vertical telescopic member 111; the old support ring 1 can be smoothly moved downward by using the first bracket 90 and the second vertical telescopic member 91;

[0040] The membrane replacement device is small in size and can be flexibly arranged; at the same time, the internal structure of the membrane replacement device is reasonably arranged, the running track of the support ring 1 is simple, the mechanism for transporting the support ring 1 is also relatively simple, and the reliability is high.

[0041] Example

[0042] See attached Figure 1-6 The whole and part of the structure of an embodiment of the present invention is a schematic diagram, and the present invention specifically discloses a membrane replacement device in a particulate matter sampler, which replaces the filter membrane 2 with a support ring 1 on the outside, that is, the filter membrane 2 is fixed on the inside of the support ring 1, and the support ring 1 can support and limit the filter membrane 2 to ensure that the filter membrane 2 can be unfolded and laid flat, and the support ring 1 can be replaced together with the filter membrane 2, and air can enter the support ring 1 and pass through the filter membrane 2, and the filter membrane 2 can intercept particulate matter in the air;

[0043] The membrane replacement device comprises:

[0044] The chassis 3 in this embodiment is a vertically arranged rectangular box body, and a hole is opened on the top wall of the chassis 3 and abutment member 4 is tightly embedded therein. The abutment member 4 has an air inlet channel 40 running through both ends thereof, and one end of the air inlet channel 40 is connected to the external atmosphere, and the other end is located in the chassis 3; a vertical telescopic member 5 is installed in the chassis 3, and abutment member 2 6 is installed at the telescopic end of the vertical telescopic member 5, and the vertical telescopic member 5 can drive the abutment member 2 6 to move up and down, and the abutment member 2 6 is located directly below the abutment member 4, and the abutment member 2 6 is provided with an exhaust channel 60 running through its outer wall, and one end of the exhaust channel 60 is connected to the air inlet end of the air monitoring device; the abutment member 1 4 and the abutment member 2 6 can respectively abut against the two ends of the support ring 1;

[0045] The old film detachment component is installed in the chassis 3. The old film detachment component includes an old film transfer member 7 and an old film barrel 8. The vertical telescopic member 1 5 can drive the abutment member 2 6 to move downward. When the abutment member 2 6 moves downward, the support ring 1 that was previously in contact with the abutment member 1 4 will move downward along with the abutment member 2 6, and the support ring 1 that is in contact with the abutment member 1 4 can be received by the old film transfer member 7. The old film transfer member 7 can drive the support ring 1 to move horizontally, that is, the support ring 1 received by the old film transfer member 7 can move horizontally to the top of the old film barrel 8, and the support ring 1 located directly above the old film barrel 8 can move downward into the old film barrel 8;

[0046] A new membrane replacement component is installed in the chassis 3. The new membrane replacement component includes a new membrane barrel 10, a new membrane ejector 11 and a new membrane transfer member 12. A plurality of support rings 1 are vertically placed in sequence in the new membrane barrel 10. The new membrane ejector 11 can eject a support ring 1 in the new membrane barrel 10 upward and be received by the new membrane transfer member 12. The new membrane transfer member 12 can drive the support ring 1 to translate, that is, the support ring 1 received by the new membrane transfer member 12 can translate to be opposite to the position of the abutment member 1 4. When the support ring 1 is opposite to the position of the abutment member 1 4, the abutment member 2 6 moves up to make the support ring 1 received by the new membrane transfer member 12 seal tightly with the abutment member 1 4 and the abutment member 2 6 respectively. At this time, the air intake channel 40 and the exhaust channel 60 are both connected to the inside of the support ring 1; the external air enters the air monitoring equipment for air quality analysis after passing through the air intake channel 40, the filter membrane 2 and the exhaust channel 60.

[0047] The old film transfer member 7 includes a mounting plate 70, a limiting ring 71 and a horizontal telescopic member 72. The mounting plate 70 is horizontally fixed in the chassis 3. The vertical telescopic member 5 is located below the mounting plate 70. A circular through hole 1 700 and a through hole 2 701 are provided on the surface of the mounting plate 70. A contact member 2 6 is provided inside the through hole 700. A support ring 1 that contacts the contact member 2 6 can be arranged inside the through hole 700. The limiting ring 71 and the horizontal telescopic member 72 are connected to each other. The telescopic end is fixedly connected, one end of the limiting ring 71 is slidably fitted against the upper plate surface of the mounting plate 70, the through hole 1 700 and the through hole 2 701 can both be opposite to and connected with the limiting ring 1 71, and the support ring 1 can be embedded in the inner side of the limiting ring 1 71; the top of the old membrane barrel 8 is open and it is arranged below the mounting plate 70, the open end of the old membrane barrel 8 is opposite to and connected with the through hole 2 701, and the support ring 1 located in the limiting ring 71 can pass through the through hole 2 701 and move down into the old membrane barrel 8.

[0048] To be more specific, the old film detaching assembly also includes an old film lowering member 9, which includes a bracket 90 and a vertical telescopic member 91. The bracket 90 is vertically slidably arranged in the old film barrel 8, and the telescopic end of the vertical telescopic member 91 is fixed to the bracket 90. The upper part of the bracket 90 can hold a plurality of support rings 1 arranged vertically in sequence; the vertical telescopic member 91 can drive the bracket 90 to move down a certain height each time, and the single downward movement height of the bracket 90 is the distance between the two ends of the support ring 1. This design ensures that the support ring 1 in the limit ring 71 can be smoothly moved down to the old film barrel 8;

[0049] The new film transfer member 12 includes a second mounting plate 120, a second limiting ring 121 and a second horizontal telescopic member 122. The second mounting plate 120 is horizontally arranged above the first mounting plate 70. A third circular through hole 1200 and a fourth through hole 1201 directly opposite to the first through hole 700 are arranged on the plate surface of the second mounting plate 120. The support ring 1 can be arranged inside the fourth circular through hole 1201. The second horizontal telescopic member 122 is fixed on the upper plate surface of the second mounting plate 120, and the first horizontal telescopic member 72 is fixed on the lower plate surface of the second mounting plate 120. The limiting ring 121 is fixedly connected to the telescopic end of the horizontal telescopic member 122, and one end of the limiting ring 121 slides tightly against the upper plate surface of the mounting plate 120. The through hole 1200 and the through hole 1201 can both face and be connected with the limiting ring 121. The new membrane barrel 10 is open at the top and is arranged below the mounting plate 120. The open end of the new membrane barrel 10 faces and is connected with the through hole 1200. The support ring 1 in the new membrane barrel 10 can pass through the through hole 1200 and be coaxially embedded in the limiting ring 121.

[0050] The new film ejection member 11 includes a bracket 2 110 and a vertical telescopic member 3 111. The bracket 2 110 is vertically slidably arranged in the new film barrel 10. The telescopic end of the vertical telescopic member 3 111 is fixed to the bracket 2 110. The bracket 2 110 can hold multiple support rings 1 arranged vertically in sequence. The vertical telescopic member 3 111 can drive the bracket 2 110 to rise to a certain height each time. The single rising height of the bracket 2 110 is the distance between the two ends of the support ring 1.

[0051] The abutment member 26 is columnar and is coaxially slidably and tightly embedded in the through hole 1 700. The through hole 1 700 has a relatively long hole depth. When the vertical telescopic member 1 5 drives the abutment member 26 to move up and down, the abutment member 26 is always slidably embedded in the inner side of the through hole 1 700. The vertical telescopic member 1 5 is fixed to the inner bottom wall of the chassis 3. The telescopic end of the vertical telescopic member 1 5 is hinged to the lower end of the abutment member 26 and the hinge axis of the two is arranged horizontally; the vertical telescopic member 1 5 is an electric push rod, a cylinder or an oil cylinder. In the present embodiment, the vertical telescopic member 5 is an electric push rod.

[0052] To be more specific, in the present application, the horizontal telescopic member 1 72, the vertical telescopic member 2 91, the horizontal telescopic member 2 122 and the vertical telescopic member 3 111 are all electric linear modules, which include a support seat, a screw rod, a guide rod, a slider, a motor and a photoelectric switch. The support seat supports a screw rod and a guide rod parallel to each other, the slider is provided with a threaded hole and a guide hole, the slider is threadedly screwed to the screw rod, a guide rod is slidably penetrated in the guide hole, the motor is fixed to the support seat and its rotating shaft is coaxially fixed with the screw rod, the photoelectric switch is arranged near the end of the screw rod, and the photoelectric switch is electrically connected to the motor. When the slider moves to a certain position, the slider triggers the photoelectric switch, thereby realizing the shutdown of the motor and the change of rotation direction.

[0053] The support base in the horizontal telescopic member 1 72 and the support base in the horizontal telescopic member 2 122 are respectively fixed to the lower plate surface and the upper plate surface of the mounting plate 2 120;

[0054] The limiting ring 1 71 is fixed to the slider in the horizontal telescopic part 1 72, and the limiting ring 2 121 is fixed to the slider in the horizontal telescopic part 2 122; the side wall of the old membrane barrel 8 is provided with a vertically arranged long hole 80 for making way, and the slider in the vertical telescopic part 2 91 is fixed to the bracket 1 90 after passing through the long hole 80 for making way; the side wall of the new membrane barrel 10 is provided with a vertically arranged long hole 100 for making way, and the slider in the vertical telescopic part 3 111 is fixed to the bracket 2 110 after passing through the long hole 100 for making way; the bracket 1 90 can pass through the long hole 80 for making way, and the bracket 2 110 can pass through the long hole 100 for making way, and this design facilitates the disassembly and assembly of the new membrane barrel 10 and the old membrane barrel 8.

[0055] To be more specific, the lower end of the abutment member 4 is grooved and embedded with an annular gasket 13, and the air intake channel 40 is arranged through the lower end of the abutment member 4; the upper end of the abutment member 6 is grooved and embedded with an annular gasket 2 14, and the exhaust channel 60 is arranged through the upper end of the abutment member 2 6; the annular gasket 13 and the annular gasket 2 14 are respectively tightly abutted against the two ends of the support ring 1, and the cross-sections of the annular gasket 13 and the annular gasket 2 14 are both circular, and the annular gasket 13 and the annular gasket 2 14 are both made of elastic material.

[0056] A hole is opened on the bottom wall of the chassis 3 and a threaded push rod 15 and a threaded push rod 2 16 are vertically threaded; the open end of the old membrane barrel 8 is coaxially provided with an annular step surface 1 81, and the open end of the new membrane barrel 10 is coaxially provided with an annular step surface 2 101; the open end of the old membrane barrel 8 is embedded in the through hole 2 701, and the step surface 1 81 is tightly pressed against the lower plate surface of the mounting plate 1 70; the open end of the new membrane barrel 10 is embedded in the through hole 3 1200, and the step surface The second 101 is pressed against the lower plate surface of the second mounting plate 120; the upper end of the threaded push rod 15 can be pressed against the lower outer wall of the old membrane barrel 8, and the upper end of the threaded push rod 2 16 can be pressed against the lower outer wall of the new membrane barrel 10; by screwing the threaded push rod 15 and the threaded push rod 2 16, the new membrane barrel 10 and the old membrane barrel 8 can be disassembled and assembled, thereby realizing the replenishment of the new filter membrane 2 in the new membrane barrel 10 and the removal of the old filter membrane 2 in the old membrane barrel 8;

[0057] One side of the chassis 3 has an opening and is detachably blocked with a door panel 17 , the door panel 17 is hinged to the chassis 3 , and a door lock is installed on the door panel 17 .

[0058] The membrane changing process of the membrane changing device:

[0059] In the initial state, the vertical telescopic member 5 is in an extended state, that is, the abutment member 4 and the abutment member 2 6 jointly clamp the support ring 1 in use. At the same time, the limiting ring 1 71 is opposite to the position of the through hole 2 701, and the limiting ring 2 121 is opposite to the position of the through hole 4 1201, that is, the support ring 1 in use is embedded in the limiting ring 2 121; when there is no old filter membrane 2 in the old membrane barrel 8, the upper surface of the bracket 90 is flush with the upper plate surface of the mounting plate 70, and when there is an old filter membrane 2 in the old membrane barrel 8, the upper end surface of the uppermost support ring 1 is flush with the upper plate surface of the mounting plate 70.

[0060] When filter membrane 2 needs to be replaced:

[0061] In the first step, the vertical telescopic member 15 drives the abutting member 26 to move downward, and the support ring 1 abutting against the abutting member 26 will also move downward, and the support ring 1 abutting against the abutting member 26 will pass through the through hole 4 1201 and enter the through hole 1 700. When the upper end surface of the support ring 1 abutting against the abutting member 26 is flush with the upper plate surface of the mounting plate 1 70, the vertical telescopic member 15 stops.

[0062] In the second step, the horizontal telescopic member 72 drives the limiting ring 71 to translate forward until the limiting ring 71 is aligned with the through hole 700;

[0063] In the third step, the vertical telescopic member 1 5 drives the abutment member 2 6 to move upward, and when the support ring 1 abutting against the abutment member 2 6 is embedded in the limit ring 1 71, the vertical telescopic member 1 5 stops;

[0064] In the fourth step, the horizontal telescopic member 72 drives the limiting ring 71 to translate in the opposite direction until the limiting ring 71 is aligned with the through hole 701, and the support ring 1 inside the limiting ring 71 abuts against the support ring 1 on the uppermost layer of the bracket 90 or the old film barrel 8. At this time, the vertical telescopic member 91 moves down a certain distance, so that the support ring 1 inside the limiting ring 71 moves into the old film barrel 8, thereby completing the disassembly and transfer of the old film;

[0065] Step 5: The second horizontal telescopic member 122 drives the second limiting ring 121 to translate forward until the second limiting ring 121 is aligned with the third through hole 1200;

[0066] Step 6: The vertical telescopic member 3 111 drives the bracket 2 110 to move up a certain distance. When the uppermost support ring 1 in the new film barrel 10 is embedded in the limiting ring 2 121, the vertical telescopic member 3 111 stops.

[0067] Step 7: The vertical telescopic member 1 5 drives the abutment member 2 6 to move upward until the upper end surface of the abutment member 2 6 is flush with the upper plate surface of the mounting plate 2 120;

[0068] In the eighth step, the horizontal telescopic member 2 122 drives the limiting ring 2 121 to translate in the opposite direction. When the limiting ring 2 121 is exactly opposite to the through hole 4 1201, the horizontal telescopic member 2 122 stops. At this time, the vertical telescopic member 1 5 drives the abutment member 2 6 to move up a certain distance, so that the abutment member 1 4 and the abutment member 2 6 clamp the support ring 1.

[0069] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0070] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A membrane replacement device in a particle sampler, for replacing a filter membrane (2) with a support ring (1) on the outside, characterized in that: include: A chassis (3) is provided with a contact member (4) on the top of the chassis (3), the contact member (4) having an air inlet passage (40) running through both ends thereof, one end of the air inlet passage (40) being in communication with the outside atmosphere, and the other end being located inside the chassis (3); a vertical telescopic member (5) is provided inside the chassis (3), a contact member (6) is provided at the telescopic end of the vertical telescopic member (5), the contact member (6) being located directly below the contact member (4), the contact member (6) being provided with an exhaust passage (60) running through the outer wall thereof, one end of the exhaust passage (60) being in communication with the air inlet end of the air monitoring device; the contact member (4) and the contact member (6) can respectively contact with both ends of the support ring (1); An old membrane detachment component is installed in a chassis (3), and the old membrane detachment component includes an old membrane transfer member (7) and an old membrane barrel (8). The support ring (1) abutting against the abutment member (4) can be received by the old membrane transfer member (7), and the support ring (1) received by the old membrane transfer member (7) moves horizontally to the top of the old membrane barrel (8) and then moves downward into the old membrane barrel (8); A new membrane replacement component is installed in the chassis (3), and the new membrane replacement component includes a new membrane barrel (10), a new membrane ejection member (11) and a new membrane transfer member (12). A plurality of support rings (1) are vertically arranged in sequence in the new membrane barrel (10). The new membrane ejection member (11) can eject a support ring (1) in the new membrane barrel (10) upward and be received by the new membrane transfer member (12). The support ring (1) received by the new membrane transfer member (12) can be translated to a position facing the abutment member 1 (4). The abutment member 2 (6) moves upward so that the support ring (1) received by the new membrane transfer member (12) is sealed and tightly abutted against the abutment member 1 (4) and the abutment member 2 (6) respectively. The air inlet channel (40) and the exhaust channel (60) can both be connected to the inside of the support ring (1). The old film transfer member (7) comprises a mounting plate (70), a limiting ring (71) and a horizontal telescopic member (72). The mounting plate (70) is fixed horizontally in the chassis (3). A through hole (700) and a through hole (701) are provided on the plate surface of the mounting plate (70). A contact member (6) is provided inside the through hole (700). A support ring (1) that contacts the contact member (6) can be arranged inside the through hole (700). The limiting ring (71) is fixedly connected to the telescopic end of the horizontal telescopic member (72). The limiting ring One end of the first (71) is slidably fitted against the upper plate surface of the first mounting plate (70), and both the first through hole (700) and the second through hole (701) can be aligned with and connected to the first limiting ring (71), and the inner side of the first limiting ring (71) can be embedded with the support ring (1); the top of the old membrane barrel (8) is open and it is arranged below the first mounting plate (70), and the open end of the old membrane barrel (8) is aligned with and connected to the second through hole (701), and the support ring (1) located in the first limiting ring (71) can pass through the second through hole (701) and move down into the old membrane barrel (8); The old film removal assembly also includes an old film lowering member (9), which includes a bracket 1 (90) and a vertical telescopic member 2 (91). The bracket 1 (90) is vertically slidably arranged in the old film barrel (8), and the telescopic end of the vertical telescopic member 2 (91) is fixed to the bracket 1 (90). The bracket 1 (90) can hold a plurality of support rings (1) vertically arranged in sequence above. The new film transfer member (12) comprises a second mounting plate (120), a second limiting ring (121) and a second horizontal telescopic member (122). The second mounting plate (120) is arranged horizontally above the first mounting plate (70). A third through hole (1200) and a fourth through hole (1201) directly opposite to the first through hole (700) are provided on the plate surface of the second mounting plate (120). The support ring (1) can be arranged inside the fourth through hole (1201). The second limiting ring (121) is fixedly connected to the telescopic end of the second horizontal telescopic member (122). One end of the limiting ring 2 (121) slides tightly against the upper plate surface of the mounting plate 2 (120), and the through hole 3 (1200) and the through hole 4 (1201) can both face and communicate with the limiting ring 2 (121); the new membrane barrel (10) is open at the top and is arranged below the mounting plate 2 (120), and the open end of the new membrane barrel (10) faces and communicates with the through hole 3 (1200); the support ring (1) located in the new membrane barrel (10) can pass through the through hole 3 (1200) and be coaxially embedded in the limiting ring 2 (121).

2. The membrane replacement device in a particle sampler according to claim 1, characterized in that: The new film ejection member (11) comprises a second bracket (110) and a third vertical telescopic member (111). The second bracket (110) is vertically slidably arranged in the new film barrel (10). The telescopic end of the third vertical telescopic member (111) is fixed to the second bracket (110). The top of the second bracket (110) can support a plurality of support rings (1) vertically arranged in sequence.

3. The membrane replacement device in a particle sampler according to claim 2, characterized in that: The abutment member 2 (6) is columnar and coaxially slidably and tightly embedded in the through hole 1 (700). The vertical telescopic member 1 (5) is fixed to the inner bottom wall of the chassis (3). The telescopic end of the vertical telescopic member 1 (5) is hinged to the lower end of the abutment member 2 (6) and the hinge axis of the two is arranged horizontally. The vertical telescopic member 1 (5) is an electric push rod, a gas cylinder or an oil cylinder.

4. The membrane replacement device in a particle sampler according to claim 3, characterized in that: The horizontal telescopic member 1 (72), the vertical telescopic member 2 (91), the horizontal telescopic member 2 (122) and the vertical telescopic member 3 (111) are all electric linear modules. The limit ring 1 (71) is fixed to the sliding end of the horizontal telescopic member 1 (72), and the limit ring 2 (121) is fixed to the sliding end of the horizontal telescopic member 2 (122); the side wall of the old membrane barrel (8) is provided with a vertically arranged long hole 1 (80), and the sliding end of the vertical telescopic member 2 (91) is fixed to the bracket 1 (90) after passing through the long hole 1 (80); the side wall of the new membrane barrel (10) is provided with a vertically arranged long hole 2 (100), and the sliding end of the vertical telescopic member 3 (111) is fixed to the bracket 2 (110) after passing through the long hole 2 (100).

5. The membrane replacement device in a particle sampler according to claim 1, characterized in that: The lower end of the abutment member 1 (4) is grooved and embedded with an annular gasket 1 (13), and the air intake passage (40) is arranged through the lower end of the abutment member 1 (4); the upper end of the abutment member 2 (6) is grooved and embedded with an annular gasket 2 (14), and the exhaust passage (60) is arranged through the upper end of the abutment member 2 (6); the annular gasket 1 (13) and the annular gasket 2 (14) are respectively tightly abutted against the two ends of the support ring (1).

6. The membrane replacement device in a particle sampler according to claim 1, characterized in that: The case (3) is a vertically arranged rectangular box, the top wall of the case (3) is fixed with an abutment member (4), the bottom wall of the case (3) is opened and vertically threaded with a threaded top rod (15) and a threaded top rod (16); the open end of the old membrane barrel (8) is coaxially provided with an annular step surface (81), and the open end of the new membrane barrel (10) is coaxially provided with an annular step surface (101); the open end of the old membrane barrel (8) is embedded in the through hole (701), and the step surface (101) is coaxially provided with an annular step surface (81). Surface one (81) is pressed against the lower surface of mounting plate one (70); the open end of the new membrane barrel (10) is embedded in through hole three (1200), and step surface two (101) is pressed against the lower surface of mounting plate two (120); the upper end of threaded push rod one (15) can be pressed against the outer wall of the lower end of the old membrane barrel (8), and the upper end of threaded push rod two (16) can be pressed against the outer wall of the lower end of the new membrane barrel (10); one side of the chassis (3) has an opening and is detachably sealed with a door panel (17).

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