A metal dust sampler for occupational health testing
By designing a metal dust sampler including the sampler main body, fixed cover, tail tube, return plate and slow flow cover, the problem of traditional samplers that need to replace the filter membrane and high-speed gas discharge affecting the surrounding air during the sampling process is solved, and accurate detection of air quality in the production workshop and multi-point continuous sampling are achieved.
Patent Information
- Application Number
- CN202411856166.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2044-12-17
AI Technical Summary
Traditional metal dust samplers need to replace the filter membrane during the sampling process, which is inconvenient for multi-point sampling, and high-speed gas discharge may affect the surrounding air, resulting in inaccurate sampling data.
A metal dust sample sampler for occupational sanitation testing is designed, and a structure including the sampler body, a fixed cover, a tail tube, a return plate, a slow flow cover and a water tank are used to block, reduce the impact on the surrounding air, and continuously detect multi-point positions through the filter cylinder and a clip.
It realizes accurate detection of the air quality in the production workshop, enables continuous sampling at multiple points, reduces the impact of high-speed gas on the surrounding air, and improves the accuracy of sampling data.
Smart Images
Figure CN119321930B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of metal dust sample samplers, in particular to a metal dust sample sampler for occupational health detection. Background Art
[0002] At present, in some metal manufacturing factories, there may be some factors that may cause harm to employees during the production process. Therefore, occupational health inspections will be conducted on enterprises to detect whether the metal powder in the environment within the factory area meets the standards. Samplers will be used for such inspections. However, when using samplers for sampling in occupational health inspections, traditional samplers need to replace the filter membrane every time they take samples, which is not convenient for multi-point sampling. At the same time, the high-speed gas discharged from the tail outlet during sampling often affects the air around the sampler, and may blow the metal dust in the surrounding air to other locations, making the sampling data inaccurate. Therefore, we propose a metal dust sample sampler for occupational health inspection to solve the above-mentioned problems. Summary of the invention
[0003] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a metal dust sampler for occupational health detection.
[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a metal dust sample sampler for occupational health testing, including a metal dust sampler, the metal dust sampler including a sampler body, a bottom connecting hole is opened in the middle of the bottom end of the sampler body, an air outlet is opened in the lower part of one side of the sampler body, a connecting cover is fixedly connected to the upper part of the side of the sampler body away from the air outlet, a fixed cover is threadedly connected to the outer periphery of the connecting cover away from the sampler body, and evenly distributed sieve holes are opened on one side of the middle part of the fixed cover.
[0005] Preferably, the sampler body is connected to a tail pipe through an air outlet, the middle part of the tail pipe is set to a bent angle state, and the upper and lower parts of the inner wall of the tail pipe close to the air outlet are fixedly connected with evenly distributed return plates, the return plates form an inward angle with the inner wall of the tail pipe, and the return plates have an arc.
[0006] Preferably, the inner end of the return plate is rotatably connected to a rotating plate, the middle part of the rotating plate is fixedly connected to a reduction motor, the outer periphery of the driving end of the reduction motor is fixedly connected to a driving gear, and the outer periphery of the driving gear is meshingly connected to evenly distributed driven gear rings.
[0007] Preferably, an exhaust pipe is fixedly connected to the middle part of one side of the connecting cover away from the fixed cover, the end of the exhaust pipe away from the fixed cover is fixedly connected to the exhaust end of the air pump inside the sampler body, the end of the exhaust pipe away from the sampler body is fixedly connected to a sealing ring, and the sealing ring is fitted with the end of the clamp away from the fixed cover.
[0008] Preferably, one side of the middle part of the exhaust pipe is fixedly connected with a uniformly distributed connecting pipe 2, and the end of the connecting pipe 2 away from the exhaust pipe is fixedly connected with an adsorption cover, and the end of the adsorption cover away from the connecting pipe 2 is arranged on the end of the clamp away from the fixed cover, and the adsorption cover is connected to the inside of the exhaust pipe through the connecting pipe 2.
[0009] Preferably, a slow flow cover is slidably connected to one side of the tail pipe away from the air outlet, a connecting pipe 1 is fixedly connected to the middle of one end of the slow flow cover away from the return plate, and the end of the connecting pipe 1 away from the slow flow cover passes through the middle of the water tank.
[0010] Preferably, the connecting pipe 1 is slidably connected to the water tank, a buffer spring is sleeved on the outer periphery of the connecting pipe 1, the buffer spring is arranged between the slow flow cover and the water tank, a uniformly distributed through hole 1 is opened on the top of the water tank, a one-way valve is installed inside the through hole 1 and the connecting pipe 1, and water is arranged inside the water tank.
[0011] Preferably, a fixing frame is fixedly connected to the outer periphery of the water tank, and the fixing frame is fixedly connected to a part of the tail pipe away from the air outlet. The end of the tail pipe away from the air outlet is provided with evenly distributed leakage holes, and a filter cover is installed on the inner side of the tail pipe away from the air outlet.
[0012] Preferably, an outer gear ring is installed on the outer periphery of one side of the rotating plate close to the sampler body, and the outer periphery of the outer gear ring is meshed and connected with evenly distributed transmission gear columns, and the transmission gear columns are fixedly connected to the driving end of the servo motor, and the servo motors are installed inside the inner wall of the connecting cover.
[0013] Preferably, the driven gear rings are fixedly connected to the outer periphery of the clamp close to the sampler body, the clamps are rotatably connected to the outer middle part of the rotating plate, the inside of the clamps are fixedly connected to an inner support frame, a filter membrane cylinder is arranged on the inner side of the inner support frame, and two evenly distributed through holes are opened on the outer middle part of the inner support frame.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] People can use the metal dust sampler to inspect the air quality of the production workshop and complete occupational health inspections. The air inside the production workshop can be extracted through the air pump inside the sampler body. The air in the workshop can enter the corresponding clip through the sieve holes on the fixed cover. The metal dust and dust in the air can be intercepted through the filter membrane tube inside the clip, and the gas will be discharged through the exhaust pipe and the air pump through the outlet. By detecting the dust and metal dust intercepted by the filter membrane tube, the proportion between them and the extracted gas can be calculated, thereby determining the metal dust content in the air, realizing air quality inspections in the production workshop, and completing occupational health inspections.
[0016] During the gas discharge process, after the gas is discharged into the tail pipe, it will contact the return plate inside the tail pipe. The return plates staggered inside the tail pipe can block and slow down the gas. The inner arc and inclination of the return plate can guide the airflow in the upper and lower parts of the tail pipe to generate backflow. The backflow can offset the discharged airflow to slow down the discharged airflow. At the same time, the angled shape of the return plate can change the direction of the discharged airflow, thereby effectively reducing the influence of the exhaust airflow on the metal dust sampler during detection.
[0017] The exhaust airflow can be further intercepted by the flow damper, and the buffer spring can make the flow damper have a certain retraction space and can achieve buffering of the airflow. The airflow can be discharged into the water tank through the inner arc guide of the flow damper by connecting pipe 1, and the water inside the water tank can achieve further buffering of the exported airflow. The buffered gas will be discharged through the through hole 1 on the upper part of the water tank, and the one-way valve inside connecting pipe 1 and through hole 1 can effectively avoid the backwash of water inside the water tank, which is beneficial to practical use. After that, the exhausted airflow can be discharged through the leakage hole at the tail end of the tail pipe after further deceleration of the filter cover, so as to achieve the most efficient deceleration of the flow velocity of the exhaust gas, thereby further avoiding the high flow rate exhaust gas affecting the distribution of metal dust in the surrounding air, which is beneficial to improve the accuracy of the metal dust sampler during detection.
[0018] In actual use, people can remove the fixed cover from the connecting cover by twisting the fixed cover counterclockwise, and then people can insert the filter membrane cylinder into the inner support frame respectively to realize the installation of the filter membrane cylinder. In actual use, a filter membrane cylinder will correspond to the sieve hole on the fixed cover and the exhaust pipe on the other side, which is convenient for air quality detection. During detection, the servo motor can drive the transmission gear column to rotate, and the transmission gear column can use the outer gear ring to synchronously drive the rotating plate to rotate. By setting multiple clips and rotating and switching them, multi-point continuous detection of the workshop to be detected can be realized, which is conducive to continuous detection.
[0019] During actual testing, the reduction motor in the middle of the rotating plate can drive the driving gear to rotate, and the driving gear can drive the surrounding meshing driven gear ring to rotate synchronously, and the driven gear ring can drive the fixed clamp to rotate synchronously. When the clamp rotates, the filter membrane cylinder inside the clamp can rotate synchronously. The rotation of the filter membrane cylinder can make the intercepted metal dust evenly adhere to the inner wall of the filter membrane cylinder, and at the same time, the filter membrane cylinder can fully intercept the passing air, which is beneficial to actual use.
[0020] When detecting metal dust in the air, in the process of intercepting the air with the filter membrane cartridge, the remaining clamps can be synchronously sucked through the connecting tube 2 and the adsorption hood, so that the filter membrane cartridge that has completed the interception can be synchronously adsorbed, so that the adsorption of metal dust can be maintained at all times, avoiding dust falling and affecting the subsequent detection accuracy, which is beneficial to practical use. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the front three-dimensional structure of a metal dust sampler for occupational health testing of the present invention;
[0022] Figure 2 This is a schematic diagram of the upward stereoscopic structure of a metal dust sampler for occupational health testing according to the present invention;
[0023] Figure 3 This is a schematic diagram of the partial structure inside the tail pipe of a metal dust sampler for occupational health testing of the present invention;
[0024] Figure 4 It is a schematic diagram of the partial structure in the water tank of a metal dust sampler for occupational health testing of the present invention;
[0025] Figure 5 It is a schematic diagram of the partial structure inside the fixed cover of a metal dust sampler for occupational health testing of the present invention;
[0026] Figure 6 It is a schematic diagram of the partial structure inside the connection cover of a metal dust sampler for occupational health testing of the present invention;
[0027] Figure 7 It is a schematic diagram of the partial structure inside the clamp of a metal dust sampler for occupational health testing of the present invention;
[0028] Figure 8 It is a partial structural schematic diagram of the driving gear of a metal dust sampler for occupational health detection of the present invention;
[0029] Fig. 9 It is a schematic diagram of the partial structure of the adsorption cover of a metal dust sampler for occupational health testing of the present invention;
[0030] Fig.10 The present invention is a schematic diagram of the partial structure of a driven gear ring of a metal dust sampler for occupational hygiene testing.
[0031] 1. Metal dust sampler; 101. Sampler body; 102. Fixed cover; 103. Tail pipe; 104. Bottom connecting hole; 105. Leakage hole; 106. Air outlet; 107. Backflow plate; 108. Slow flow cover; 109. Buffer spring; 110. Through hole 1; 111. Water tank; 112. Fixed frame; 113. Filter cover; 114. One-way valve; 115. Connecting pipe 1; 116. Clip; 117. Connecting cover; 118. Turn plate; 119. External gear ring; 120. Driving gear; 121. Driven gear ring; 122. Adsorption cover; 123. Connecting pipe 2; 124. Exhaust pipe; 125. Reducer motor; 126. Filter membrane cartridge; 127. Through hole 2; 128. Inner support frame; 129. Transmission gear column; 130. Servo motor; 131. Sealing ring. DETAILED DESCRIPTION
[0032] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.
[0033] like Figure 1-Figure 10 The metal dust sampler for occupational health detection shown in the figure comprises a metal dust sampler 1, which comprises a sampler body 101, a bottom connection hole 104 is provided in the middle of the bottom end of the sampler body 101, an air outlet 106 is provided in the lower part of one side of the sampler body 101, a connection cover 117 is fixedly connected to the upper part of the side of the sampler body 101 away from the air outlet 106, a fixed cover 102 is threadedly connected to the outer periphery of the connection cover 117 away from the sampler body 101, a uniformly distributed sieve hole is provided on one side of the middle part of the fixed cover 102, and a reflux plate 107 is rotatably connected to the inner end thereof. A rotating plate 118, a reduction motor 125 is fixedly connected to the middle of the rotating plate 118, a driving gear 120 is fixedly connected to the outer periphery of the driving end of the reduction motor 125, and a driven gear ring 121 is meshed and connected to the outer periphery of the driving gear 120, and the driven gear ring 121 is fixedly connected to the outer periphery of the clamp 116 near the sampler body 101, and the clamps 116 are rotatably connected to the outer side of the middle part of the rotating plate 118, and the inner part of the clamp 116 is fixedly connected to the inner support frame 128, and a filter membrane cylinder 126 is arranged on the inner side of the inner support frame 128, and a uniformly distributed through hole 127 is opened on the outer side of the middle part of the inner support frame 128;
[0034] Furthermore, in specific implementation and actual use, people can use the metal dust sampler 1 to inspect the air quality of the production workshop and complete occupational health inspections. The air inside the production workshop can be extracted through the air pump inside the sampler body 101, and the air in the workshop can enter the corresponding clamp 116 through the sieve holes on the fixed cover 102. The metal dust and dust in the air can be intercepted by the filter membrane tube 126 inside the clamp 116, and the gas will be discharged through the exhaust pipe 124 and the air pump via the air outlet 106. By detecting the dust and metal dust intercepted by the filter membrane tube 126, the proportion between the dust and the extracted gas can be calculated, thereby determining the metal dust content in the air, realizing air quality inspection of the production workshop, and completing occupational health inspections.
[0035] Among them, the sampler body 101 is connected to the tail pipe 103 through the air outlet 106, the middle part of the tail pipe 103 is set to a bent angle state, the upper and lower parts of the inner wall of the tail pipe 103 near the air outlet 106 are fixedly connected with evenly distributed return plates 107, the return plates 107 form an inward angle with the inner wall of the tail pipe 103, and the return plates 107 have an arc, and the side of the tail pipe 103 away from the air outlet 106 is slidably connected with a slow flow cover 108, and the middle part of the end of the slow flow cover 108 away from the return flow plate 107 is fixedly connected with a connecting pipe 115, and the end of the connecting pipe 115 away from the slow flow cover 108 passes through the middle of the water tank 111, and the connecting pipe 115 and the water tank 111 is slidingly connected, a buffer spring 109 is sleeved on the outer periphery of the connecting pipe 115, and the buffer spring 109 is arranged between the slow flow cover 108 and the water tank 111. The top of the water tank 111 is provided with evenly distributed through holes 110, and a one-way valve 114 is installed inside the through hole 110 and the connecting pipe 115. Water is arranged inside the water tank 111, and a fixing frame 112 is fixedly connected to the outer periphery of the water tank 111. The fixing frame 112 is fixedly connected to a part of the tail pipe 103 away from the air outlet 106. The end of the tail pipe 103 away from the air outlet 106 is provided with evenly distributed leakage holes 105, and a filter cover 113 is installed on the inner side of the tail pipe 103 away from the air outlet 106;
[0036] Furthermore, in a specific implementation, during the gas discharge process, after the gas is discharged into the tail pipe 103, it will contact the return plate 107 inside the tail pipe 103. The return plates 107 staggered inside the tail pipe 103 can block and decelerate the gas. The inner arc and inclination of the return plates 107 can guide the airflows in the upper and lower parts of the tail pipe 103 to generate a backflow. The backflow can offset the discharged airflow to decelerate the discharged airflow. At the same time, the curved shape of the return plate 107 can change the direction of the discharged airflow, thereby effectively reducing the influence of the discharged airflow on the detection of the metal dust sampler 1. The slow flow cover 108 can further intercept the discharged airflow. At the same time, the buffer spring 109 can make the slow flow cover 108 have a certain retraction space, and The airflow can be buffered. The airflow can be guided by the inner arc of the slow flow cover 108 and discharged into the water tank 111 by the connecting pipe 115. The water in the water tank 111 can further buffer the derived airflow. The buffered gas will be discharged through the through hole 110 on the upper part of the water tank 111. The one-way valve 114 in the connecting pipe 115 and the through hole 110 can effectively avoid the water backwash in the water tank 111, which is beneficial to practical use. The discharged airflow can be discharged through the leakage hole 105 at the tail end of the tail pipe 103 after further deceleration in the filter cover 113, so as to achieve the most efficient deceleration of the flow rate of the exhaust gas, thereby further avoiding the high flow rate of exhaust gas affecting the distribution of metal dust in the surrounding air, which is beneficial to improving the accuracy of the metal dust sampler 1 during detection.
[0037] Among them, an outer gear ring 119 is installed on the outer periphery of one side of the rotating plate 118 close to the sampler body 101, and the outer periphery of the outer gear ring 119 is meshed and connected with uniformly distributed transmission gear columns 129, and the transmission gear columns 129 are fixedly connected to the driving end of the servo motor 130, and the servo motor 130 is installed inside the inner wall of the connecting cover 117. The middle part of the side of the connecting cover 117 away from the fixed cover 102 is fixedly connected with an exhaust pipe 124, and the end of the exhaust pipe 124 away from the fixed cover 102 is fixedly connected to the exhaust end of the air pump inside the sampler body 101, and the exhaust pipe 124 is fixedly connected to the exhaust end of the air pump inside the sampler body 101. The end of the sampler body 101 away from the sampler body 101 is fixedly connected with a sealing ring 131, and the sealing ring 131 fits the end of the clamp 116 away from the fixed cover 102. The middle part of the air extraction pipe 124 is fixedly connected with a uniformly distributed connecting pipe 2 123. The ends of the connecting pipe 2 123 away from the air extraction pipe 124 are fixedly connected with an adsorption cover 122. The ends of the adsorption covers 122 away from the connecting pipe 2 123 are arranged at the end of the clamp 116 away from the fixed cover 102. The adsorption covers 122 are connected to the inside of the air extraction pipe 124 through the connecting pipe 2 123.
[0038] Furthermore, in the specific implementation, in actual use, people can twist the fixed cover 102 counterclockwise to remove the fixed cover 102 from the connecting cover 117, and then people can insert the filter membrane cartridge 126 into the inner support frame 128 respectively to achieve the installation of the filter membrane cartridge 126. In actual use, one filter membrane cartridge 126 will correspond to the sieve hole on the fixed cover 102 and the exhaust pipe 124 on the other side, which is convenient for air quality detection. During the detection, the servo motor 130 can drive the transmission gear column 129 to rotate, and the transmission gear column 129 can use the outer gear ring 119 to synchronously drive the rotating plate 118 to rotate. By setting a plurality of clamps 116 and rotating and switching them, multi-point continuous detection of the workshop to be detected can be achieved, which is conducive to continuous detection. During actual detection, the reduction motor 125 in the middle of the rotating plate 118 can drive the driving gear 1 20 is rotated, and the driving gear 120 can drive the surrounding meshing driven gear ring 121 to rotate synchronously, and the driven gear ring 121 can drive the fixed clamp 116 to rotate synchronously. When the clamp 116 rotates, the filter membrane cylinder 126 inside the clamp 116 can rotate synchronously. The rotation of the filter membrane cylinder 126 can make the intercepted metal dust evenly adhere to the inner wall of the filter membrane cylinder 126, and at the same time, the filter membrane cylinder 126 can fully intercept the passing air, which is beneficial to practical use. At the same time, when the filter membrane cylinder 126 is used to intercept the air, the connecting pipe 123 and the adsorption cover 122 can realize the synchronous suction of the remaining clamps 116, so that the filter membrane cylinder 126 that has completed the interception can be synchronously adsorbed, so that the adsorption of metal dust can be maintained at all times, and the dust falling to prevent the subsequent detection accuracy from being affected, which is beneficial to practical use.
[0039] Working principle:
[0040] In actual use, people can use the metal dust sampler 1 to inspect the air quality of the production workshop and complete occupational health inspections. The air pump inside the sampler body 101 can be used to extract the air inside the production workshop. The air in the workshop can enter the corresponding clip 116 through the sieve holes on the fixed cover 102. The filter membrane tube 126 inside the clip 116 can intercept metal dust and dust in the air, and the gas will be discharged through the exhaust pipe 124 and the air pump via the air outlet 106. By detecting the dust and metal dust intercepted by the filter membrane tube 126, the proportion between the dust and metal dust and the extracted gas can be calculated, thereby determining the metal dust content in the air and achieving air quality inspection of the production workshop. Inspection, complete occupational health inspection work, during the gas exhaust process, after the gas is discharged into the tail pipe 103, it will contact the return plate 107 inside the tail pipe 103, and the return plates 107 staggered inside the tail pipe 103 can block and slow down the gas, and the inner arc and inclination of the return plate 107 can guide the airflow in the upper and lower parts of the tail pipe 103 to generate a backflow, and the backflow can offset the exhaust airflow to achieve the deceleration of the exhaust airflow, and at the same time, the curved shape of the return plate 107 can change the direction of the exhaust airflow, thereby effectively reducing the exhaust airflow The influence of the metal dust sampler 1 during detection can be effectively reduced, and the exhaust airflow can be further intercepted by the slow flow cover 108, and at the same time, the buffer spring 1 09 can make the slow-flow cover 108 have a certain retraction space, and can achieve the buffering of airflow. The airflow can be discharged into the water tank 111 through the inner arc guide of the slow-flow cover 108 by using the connecting pipe 115. The water inside the water tank 111 can further buffer the derived airflow. The buffered gas will be discharged through the through hole 110 on the upper part of the water tank 111. The one-way valve 114 inside the connecting pipe 115 and the through hole 110 can effectively avoid the water backwash inside the water tank 111, which is beneficial to practical use. After that, the discharged airflow can be discharged through the leakage hole 105 at the tail end of the tail pipe 103 after further deceleration of the filter cover 113, so as to achieve the maximum efficient deceleration of the flow velocity of the discharged gas, thereby further avoiding high The flow rate of exhaust gas affects the distribution of metal dust in the surrounding air, which is beneficial to improve the accuracy of the metal dust sampler 1 during detection. At the same time, in actual use, people can twist the fixed cover 102 counterclockwise to remove the fixed cover 102 from the connecting cover 117, and then people can insert the filter membrane cylinder 126 into the inner support frame 128 respectively to achieve the installation of the filter membrane cylinder 126. In actual use, a filter membrane cylinder 126 will correspond to the sieve hole on the fixed cover 102 and the exhaust pipe 124 on the other side, which is convenient for air quality detection. During detection, the servo motor 130 can drive the transmission gear column 129 to rotate, and the transmission gear column 129 can use the outer gear ring 119 to synchronously drive the rotating plate 118 to rotate.By setting a plurality of clamps 116 and making them rotate and switch, it is possible to realize multi-point continuous detection of the workshop to be inspected, which is conducive to continuous detection work. During actual detection, the reduction motor 125 in the middle of the rotating plate 118 can drive the driving gear 120 to rotate, and the driving gear 120 can drive the surrounding meshing driven gear ring 121 to rotate synchronously, and the driven gear ring 121 can drive the fixed clamps 116 to rotate synchronously. When the clamp 116 rotates, the filter membrane cylinder 126 inside the clamp 116 can rotate synchronously. The rotation of the filter membrane cartridge 126 can make the intercepted metal dust evenly adhere to the inner wall of the filter membrane cartridge 126, and at the same time, the filter membrane cartridge 126 can fully intercept the passing air, which is beneficial to practical use. At the same time, when the filter membrane cartridge 126 is used to intercept the air, the connecting pipe 123 and the adsorption cover 122 can realize the synchronous suction of the remaining clamps 116, so that the filter membrane cartridge 126 that has completed the interception can be synchronously adsorbed, so that the metal dust can be adsorbed at all times, and the dust falling can be avoided to affect the subsequent detection accuracy, which is beneficial to practical use.
[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.
Claims
1. A metal dust sampler for occupational health testing, comprising a metal dust sampler (1), characterized in that: The metal dust sampler (1) comprises a sampler body (101), a bottom connection hole (104) is provided at the middle of the bottom end of the sampler body (101), an air outlet (106) is provided at the lower part of one side of the sampler body (101), a connection cover (117) is fixedly connected to the upper part of the side of the sampler body (101) away from the air outlet (106), a fixed cover (102) is threadedly connected to the outer periphery of the end of the connection cover (117) away from the sampler body (101), a uniformly distributed sieve holes is provided at one side of the middle part of the fixed cover (102), the sampler body (101) is connected to a tail pipe (103) via the air outlet (106), the middle part of the tail pipe (103) is arranged in a bent state, and the tail pipe (103) is provided with a plurality of holes. 03) are fixedly connected to evenly distributed return plates (107) at the upper and lower parts of the inner wall on the side close to the air outlet (106), the return plates (107) form an inward inclination angle with the inner wall of the tail pipe (103), the return plates (107) have an arc, the inner end of the return plate (107) is rotatably connected to a rotating plate (118), the middle part of the rotating plate (118) is fixedly connected to a reduction motor (125), the outer periphery of the driving end of the reduction motor (125) is fixedly connected to a driving gear (120), the outer periphery of the driving gear (120) is meshingly connected to evenly distributed driven gear rings (121), the middle part of the side of the connecting cover (117) away from the fixed cover (102) is fixedly connected to an exhaust pipe (124), the exhaust pipe One end of the air extraction pipe (124) away from the fixed cover (102) is fixedly connected to the air pump exhaust end of the sampler body (101); one end of the air extraction pipe (124) away from the sampler body (101) is fixedly connected to a sealing ring (131); the sealing ring (131) fits the end of the clamp (116) away from the fixed cover (102); one side of the middle of the air extraction pipe (124) is fixedly connected to a uniformly distributed connecting pipe 2 (123); one end of the connecting pipe 2 (123) away from the air extraction pipe (124) is fixedly connected to an adsorption cover (122); one end of the adsorption cover (122) away from the connecting pipe 2 (123) is arranged on the end of the clamp (116) away from the fixed cover (102); the adsorption cover (122) is connected to the sampler body (101) by The second connecting pipe (123) is connected to the inside of the exhaust pipe (124); an outer gear ring (119) is installed on the outer periphery of the rotating plate (118) close to the sampler body (101); the outer periphery of the outer gear ring (119) is meshedly connected with evenly distributed transmission gear columns (129); the transmission gear columns (129) are fixedly connected to the driving end of the servo motor (130); the servo motor (130) is installed inside the inner wall of the connecting cover (117); the driven gear ring (121) is fixedly connected to the outer periphery of the clamp (116) close to the sampler body (101); the clamp (116) is rotatably connected to the outer side of the middle part of the rotating plate (118); the inside of the clamp (116) is fixedly connected to an inner support frame (128);A filter membrane cartridge (126) is disposed inside the inner support frame (128), and evenly distributed through holes (127) are opened on the outer side of the middle portion of the inner support frame (128).
2. The metal dust sampler for occupational health testing according to claim 1 is characterized in that: A slow flow cover (108) is slidably connected to a side of the tail pipe (103) away from the air outlet (106); a connecting pipe 1 (115) is fixedly connected to the middle of one end of the slow flow cover (108) away from the return plate (107); and one end of the connecting pipe 1 (115) away from the slow flow cover (108) passes through the middle of the water tank (111).
3. The metal dust sampler for occupational health testing according to claim 2 is characterized in that: The connecting pipe (115) is slidably connected to the water tank (111); a buffer spring (109) is sleeved on the outer periphery of the connecting pipe (115); the buffer spring (109) is arranged between the slow flow cover (108) and the water tank (111); the top of the water tank (111) is provided with evenly distributed through holes (110); one-way valves (114) are installed inside the through holes (110) and the connecting pipe (115); and water is arranged inside the water tank (111).
4. The metal dust sampler for occupational health testing according to claim 2 is characterized in that: A fixing frame (112) is fixedly connected to the outer periphery of the water tank (111); the fixing frame (112) is fixedly connected to a portion of the tail pipe (103) away from the air outlet (106); evenly distributed leakage holes (105) are provided at one end of the tail pipe (103) away from the air outlet (106); and a filter cover (113) is installed on one side of the interior of the tail pipe (103) away from the air outlet (106).
Citation Information
Patent Citations
Low vibration dust sampler
CN109406227A
Cyclone separator for air sampler
CN112461609A