Portable constant current sampler

Abstract

The utility model discloses a portable constant current sampler, and relates to the technical field of constant current samplers. The anti-backflow device comprises an anti-backflow mechanism and a main body, an adjusting mechanism anti-backflow device is arranged at the bottom of the anti-backflow mechanism, a lifting cabinet is slidably connected to the interior of the main body, an air suction pump is fixedly connected to the top of the lifting cabinet, and an air inlet pipe is fixedly connected to the left side of the air suction pump. By arranging the flow preventer and starting the air suction pump, air sucked by the air suction pump enters the flow preventer through the air inlet pipe, the sealing ball is pushed to the left side after the condition in the flow preventer reaches a certain degree, and the through hole in the limiting block is opened by moving the sealing ball to the left side; then air flow enters the left side of the flow preventer through the through hole and then flows into the conveying hose through the air outlet groove, and when the air suction pump is closed, the through hole of the limiting block is blocked by the sealing ball under the action of the spring, so that the air flow is prevented from flowing back and influencing a detection result, and the accuracy of an analysis result is ensured.

Description

Technical Field

[0001] The utility model relates to a constant current sampler belonging to the technical field, in particular to a portable constant current sampler. Background Art

[0002] Atmospheric sampler is a common instrument used to collect atmospheric environment and workshop on-site gas. It is widely used in atmospheric environment monitoring, health and epidemic prevention, labor protection, scientific research and other units. It can also be used in conjunction with relevant instruments to analyze the sampled gas to understand the degree of environmental pollution by harmful gases and provide the actual situation of pollution to the relevant competent authorities so that countermeasures can be taken to ensure that people have a healthy living environment.

[0003] The existing atmospheric samplers perform detection after completing the atmospheric collection. In some cases, the collected atmosphere will have a backflow, which will cause deviations in the detection effect. Multiple tests are required to ensure the accuracy of the data. This device closes the suction pump while the sealing ball blocks the through hole of the limit block under the action of the spring to prevent the air flow from flowing back and affecting the detection results, so as to ensure the accuracy of the analysis results. For this purpose, we provide a portable constant current sampler. Utility Model Content

[0004] The purpose of the utility model is to provide a portable constant-current sampler, which can close the air pump and at the same time, the sealing ball will block the through hole of the limit block under the action of the spring to prevent the air flow from flowing back and affecting the detection result, so as to ensure the accuracy of the analysis result, and solve the problem that in some existing situations, the collected atmosphere will flow back, causing the detection effect to deviate.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a portable constant current sampler, comprising a backflow prevention mechanism and a main body, wherein an adjusting mechanism flow preventer is arranged at the bottom of the backflow prevention mechanism, a lifting cabinet is slidably connected inside the main body, an air suction pump is fixedly connected to the top of the lifting cabinet, an air intake pipe is fixedly connected to the left side of the air suction pump, a flow preventer is fixedly connected to the left side of the air intake pipe, a flow groove is opened inside the flow preventer, a limiting block is fixedly connected to the inner wall of the flow preventer, and a sliding pipe is fixedly connected to the back of the limiting block;

[0007] An air outlet groove is provided inside the sliding tube, a sealing ball is contacted with the back of the limit block, a spring is fixedly connected to the back of the sealing ball, the back of the spring is fixedly connected to the inner wall of the flow preventer, and a conveying hose is fixedly connected to the left side of the flow preventer.

[0008] Furthermore, a detector is fixedly connected to the left side of the delivery hose, and a handle is fixedly connected to the back side of the detector.

[0009] Furthermore, the left and right sides of the detector are rotatably connected with adjustment rods, and the other ends of the adjustment rods are rotatably connected to the inner wall of the lifting cabinet.

[0010] Furthermore, the adjustment mechanism includes a push-pull rod rotatably connected to the right side of the main body, and a bidirectional motor is fixedly connected inside the main body.

[0011] Furthermore, the left and right output ends of the bidirectional motor are fixedly connected to a rotating shaft, and the left side of the rotating shaft is fixedly connected to a bevel gear 1.

[0012] Furthermore, the top of the bevel gear one is rotatably connected to the bevel gear two, and the inner side of the bevel gear two is fixedly connected to a rotating cylinder.

[0013] Furthermore, a threaded rod is threadedly connected inside the rotating cylinder, and the bottom of the rotating cylinder is rotatably connected to the inner wall of the main body.

[0014] Furthermore, the top of the threaded rod is rotatably connected to the bottom of the lifting cabinet, and the outer surface of the rotating cylinder is rotatably connected to the inner wall of the lifting cabinet.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model sets a flow preventer and starts the air suction pump. The air sucked by the air suction pump enters the flow preventer through the air inlet pipe. When the situation inside the flow preventer reaches a certain level, the sealing ball will be pushed to the left. The sealing ball moves to the left, so that the internal through hole of the limit block is opened. Then the airflow enters the left side of the flow preventer through the through hole, and then flows into the delivery hose through the air outlet groove. When the air suction pump is turned off, the sealing ball will block the through hole of the limit block under the action of the spring to prevent the airflow from flowing back and affecting the detection result, so as to ensure the accuracy of the analysis result.

[0017] 2. The utility model sets a rotating cylinder, and the bidirectional motor is started to drive the rotating shaft to rotate. The rotation of the rotating shaft drives the bevel gear one to rotate, and then the rotation of the bevel gear one drives the bevel gear two to rotate. At the same time, when the bevel gear two rotates, the rotating cylinder will be driven to rotate. The threaded rod will gradually move upward when the rotating cylinder rotates. When the threaded rod moves upward, the lifting cabinet will be lifted up, and the suction pump will be adjusted to the best working area to detect gases at different heights. When not in use, it can be put into the main body for easy storage without occupying external space.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the main body of the utility model;

[0022] Figure 3 This is a schematic diagram of the front cross-sectional structure of the main body of the utility model;

[0023] Figure 4 For this utility model Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0024] Figure 5 It is a schematic diagram of the left side cross-sectional structure of the flow preventer of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Anti-backflow mechanism; 101. Main body; 102. Lifting cabinet; 103. Air suction pump; 104. Flow preventer; 105. Detector; 106. Adjusting rod; 107. Handle; 108. Delivery hose; 109. Flow trough; 110. Air inlet pipe; 111. Limit block; 112. Sliding pipe; 113. Air outlet groove; 114. Spring; 115. Sealing ball; 2. Adjusting mechanism; 201. Push-pull rod; 202. Bidirectional motor; 203. Rotating shaft; 204. Rotating cylinder; 205. Bevel gear one; 206. Bevel gear two; 207. Threaded rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5As shown, the utility model is a portable constant current sampler, comprising a backflow prevention mechanism 1 and a main body 101, an adjusting mechanism 2 is provided at the bottom of the backflow prevention mechanism 1, a lifting cabinet 102 is slidably connected inside the main body 101, an air suction pump 103 is fixedly connected to the top of the lifting cabinet 102, an air intake pipe 110 is fixedly connected to the left side of the air intake pipe 110, a flow preventer 104 is fixedly connected to the left side of the air intake pipe 110, a flow groove 109 is provided inside the flow preventer 104, a limiting block 111 is fixedly connected to the inner wall of the flow preventer 104, and a sliding pipe 112 is fixedly connected to the back of the limiting block 111;

[0029] An air outlet groove 113 is provided inside the slide tube 112, a sealing ball 115 is in contact with the back of the limit block 111, a spring 114 is fixedly connected to the back of the sealing ball 115, the back of the spring 114 is fixedly connected to the inner wall of the flow preventer 104, a delivery hose 108 is fixedly connected to the left side of the flow preventer, the air suction pump 103 is started, and the air sucked by the air suction pump 103 enters the flow preventer 104 through the air inlet pipe 110, and when the situation inside the flow preventer 104 reaches a certain level, the sealing ball 115 will be pushed to the left, and the sealing ball 115 moves to the left, so that the internal through hole of the limit block 111 is opened, and then the air flow enters the flow preventer 104 through the through hole. The air flows into the delivery hose 108 through the air outlet groove 113 on the left side. When the air pump 103 is closed, the sealing ball 115 will block the through hole of the limit block 111 under the action of the spring 114 to prevent the air flow from flowing back and affecting the detection result. In order to ensure the accuracy of the analysis result, the delivery hose 108 is fixedly connected with the detector 105 on the left side. The detector 105 is fixedly connected with the handle 107 on the back side. By pulling the handle 107, the bottom of the detector 105 is stuck in the groove to make the detector 105 stand up. The left and right sides of the detector 105 are rotatably connected with the adjusting rod 106, and the other end of the adjusting rod 106 is rotatably connected to the inner wall of the lifting cabinet 102.

[0030] The adjustment mechanism 2 includes a push-pull rod 201 rotatably connected to the right side of the main body 101, a bidirectional motor 202 is fixedly connected inside the main body 101, a rotating shaft 203 is fixedly connected to the left and right output ends of the bidirectional motor 202, a bevel gear 1 205 is fixedly connected to the left side of the rotating shaft 203, and the lifting cabinet 102 can be moved by the cooperation of the bevel gear 1 205 and the bevel gear 2 206, the top of the bevel gear 1 205 is rotatably connected to the bevel gear 2 206, the inner side of the bevel gear 206 is fixedly connected to a rotating cylinder 204, the inner side of the rotating cylinder 204 is threadedly connected to a threaded rod 207, the bottom of the rotating cylinder 204 is rotatably connected to the inner wall of the main body 101, and the bidirectional motor 202 is started to drive the rotating shaft 203 to rotate. The rotation of the rotating shaft 203 drives the bevel gear 1 205 to rotate, and then the rotation of the bevel gear 1 205 drives the bevel gear 2 206 to rotate. At the same time, when the bevel gear 206 rotates, the rotating cylinder 204 will be driven to rotate. The threaded rod 207 rotated by the rotating cylinder 204 will gradually move upward. When the threaded rod 207 moves upward, the lifting cabinet 102 will be lifted up, and the suction pump 103 will be adjusted to the optimal working area to detect gases at different heights. When not in use, it can be collected in the main body 101 for easy storage without occupying external space. The top of the threaded rod 207 is rotatably connected to the bottom of the lifting cabinet 102, and the outer surface of the rotating cylinder 204 is rotatably connected to the inner wall of the lifting cabinet 102.

[0031] A specific application of this embodiment is: the staff pulls the push-pull rod 201 to move the device to a suitable position and then opens the cover; and starts the bidirectional motor 202. The bidirectional motor 202 starts to drive the rotating shaft 203 to rotate, and the rotation of the rotating shaft 203 drives the bevel gear 1 205 to rotate, and then the rotation of the bevel gear 1 205 drives the bevel gear 206 to rotate. At the same time, when the bevel gear 206 rotates, it will drive the rotating cylinder 204 to rotate, and the threaded rod 207 will gradually move upward by rotating the rotating cylinder 204. When the threaded rod 207 moves upward, the lifting cabinet 102 will be lifted up, and the suction pump 103 will be adjusted to the best working area. When it is not in use, it can be collected in the main body 101 for easy storage without occupying external space. After adjusting to a suitable working area, pull the handle 107 to pull out the detector 105, and then Then, the detector 105 is rotated to make it fit into the groove, and the detector 105 is supported by the adjustment rod 106. Then, the suction pump 103 is started. The air sucked by the suction pump 103 enters the flow preventer 104 through the air inlet pipe 110. When the situation inside the flow preventer 104 reaches a certain level, the sealing ball 115 will be pushed to the left. The sealing ball 115 moves to the left, so that the internal through hole of the limit block 111 is opened. Then the airflow enters the left side of the flow preventer 104 through the through hole, and then flows into the delivery hose 108 through the air outlet groove 113, and then enters the detector 105 through the delivery hose 108 to start detection. When the suction pump 103 is turned off, the sealing ball 115 will block the through hole of the limit block 111 under the action of the spring 114 to prevent the airflow from flowing back and affecting the detection result, so as to ensure the accuracy of the analysis result.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A portable constant current sampler, comprising a backflow prevention mechanism (1) and a main body (101), wherein an adjusting mechanism (2) is provided at the bottom of the backflow prevention mechanism (1), and a lifting cabinet (102) is slidably connected inside the main body (101), characterized in that: The top of the lifting cabinet (102) is fixedly connected to an air pump (103), the left side of the air pump (103) is fixedly connected to an air intake pipe (110), the left side of the air intake pipe (110) is fixedly connected to a flow preventer (104), a flow groove (109) is provided inside the flow preventer (104), a limiting block (111) is fixedly connected to the inner wall of the flow preventer (104), and a sliding pipe (112) is fixedly connected to the back of the limiting block (111); An air outlet groove (113) is provided inside the sliding tube (112); the back of the limit block (111) contacts a sealing ball (115); the back of the sealing ball (115) is fixedly connected to a spring (114); the back of the spring (114) is fixedly connected to the inner wall of the flow preventer (104); and the left side of the flow preventer is fixedly connected to a delivery hose (108).

2. A portable constant current sampler according to claim 1, characterized in that: The left side of the delivery hose (108) is fixedly connected to a detector (105), and the back side of the detector (105) is fixedly connected to a handle (107).

3. A portable constant current sampler according to claim 2, characterized in that: The left and right sides of the detector (105) are rotatably connected to an adjusting rod (106), and the other end of the adjusting rod (106) is rotatably connected to the inner wall of the lifting cabinet (102).

4. A portable constant current sampler according to claim 1, characterized in that: The adjustment mechanism (2) comprises a push-pull rod (201) rotatably connected to the right side of the main body (101), and a bidirectional motor (202) is fixedly connected inside the main body (101).

5. A portable constant current sampler according to claim 4, characterized in that: The left and right output ends of the bidirectional motor (202) are fixedly connected to a rotating shaft (203), and the left side of the rotating shaft (203) is fixedly connected to a bevel gear 1 (205).

6. A portable constant current sampler according to claim 5, characterized in that: The top of the bevel gear 1 (205) is rotatably connected to the bevel gear 2 (206), and the inner side of the bevel gear 2 (206) is fixedly connected to the rotating cylinder (204).

7. A portable constant current sampler according to claim 6, characterized in that: The rotating cylinder (204) is internally threadedly connected with a threaded rod (207), and the bottom of the rotating cylinder (204) is rotatably connected to the inner wall of the main body (101).

8. A portable constant current sampler according to claim 7, characterized in that: The top of the threaded rod (207) is rotatably connected to the bottom of the lifting cabinet (102), and the outer surface of the rotating cylinder (204) is rotatably connected to the inner wall of the lifting cabinet (102).

Images