Sampling frame for air environment monitoring

Abstract

The utility model relates to the technical field of air environment monitoring, and discloses a sampling frame for air environment monitoring, which comprises a support frame capable of lifting up and down, a mounting seat arranged at the top end of the support frame, a sampling head arranged on the mounting seat and a monitor electrically connected with the sampling head, and a mounting cylinder arranged on the mounting seat, a plurality of clamping blocks capable of limiting the sampling head are uniformly distributed in the circumferential direction of the mounting cylinder in a sliding manner, a sliding rod is arranged on each clamping block, a first spring sleeving the sliding rod is arranged between the mounting cylinder and each clamping block, and a limiting removal assembly capable of driving the sliding rod to retract to remove limiting is arranged on the mounting cylinder. Compared with the prior art, the utility model has the advantages that the sampling head can be quickly and reliably assembled and disassembled conveniently, and the detection accuracy is prevented from being influenced by rain shielding.

Description

Technical Field

[0001] This utility model relates to the field of air environment monitoring technology, specifically to a sampling rack for air environment monitoring. Background Technology

[0002] An air environment monitoring sampling frame is a device used to support and fix air sampling equipment. It is usually used in conjunction with sampling heads for collecting air samples and air quality analysis instruments to ensure that the sampling process is stable and meets monitoring requirements. It mainly consists of a basic frame composed of a tripod structure including a sleeve, legs, and support rods, as well as a mounting cylinder for installing the sampling head.

[0003] Existing sampling heads and mounting cylinders are mostly connected by threads. Since the basic frame is relatively fixed, the sampling head needs to be rotated to replace it during installation and disassembly. This not only results in low installation and disassembly efficiency but also easily damages the sampling head during rotation. In addition, existing sampling heads are mostly open, and rainwater can easily enter the sampling head on rainy days without being dried in time, thus affecting the reliability of subsequent test results. Utility Model Content

[0004] The technical problem this invention aims to solve is that the threaded connection between the sampling head and the mounting cylinder results in low assembly and disassembly efficiency and is prone to damage; rainwater entering the sampling head cannot be dried in time, thus affecting the reliability of subsequent test results.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a sampling frame for air environment monitoring, including a support frame that can be raised and lowered, a mounting base at the top of the support frame, a sampling head and a monitoring instrument electrically connected to the sampling head on the mounting base, a mounting cylinder on the mounting base, a plurality of locking blocks that can limit the sampling head are evenly distributed around the mounting cylinder, a sliding rod on the locking block, a first spring sleeved on the sliding rod between the mounting cylinder and the locking block, and a limit release component on the mounting cylinder that can drive the sliding rod to retract and release the limit; a rain shelter above the sampling head and the monitoring instrument on the mounting base to prevent rainwater from entering the sampling head, the rain shelter including a connecting ball and a plurality of fan-shaped plates hinged around the connecting ball and capable of sealing fit, the fan-shaped plates are folded by a folding component to achieve fit and cover.

[0006] Furthermore, the limit release assembly includes a drive ring and a fixed shaft located on the outside of the mounting cylinder. The drive ring is slidably located outside the mounting cylinder, and a connecting rod is rotatably provided at the other end of the fixed shaft. Drive grooves are provided on both sides of the connecting rod, and drive pins that cooperate with the drive grooves are provided at the end of the sliding rod and circumferentially opposite to the drive ring.

[0007] Furthermore, the mounting cylinder has a circumferential boss at the bottom end, and a second spring that abuts against the sampling head is provided on the bottom wall.

[0008] Furthermore, the sampling head is provided with a limiting groove in the circumference that cooperates with the card block for limiting. The card block has a height that matches the limiting groove and a triangular or right-angled trapezoidal cross-section.

[0009] Furthermore, the folding assembly includes a support rod located at the center of the top of the mounting base. The support rod passes through a connecting ball and has a fixing plate at the other end. A slip ring is slidably provided at the bottom end of the fixing plate. The slip ring is driven by a power component. One side of the fan-shaped plate is hinged to the connecting ball, and the other side is hinged to the slip ring with a hinge rod.

[0010] Furthermore, the power component includes a telescopic cylinder with a hinged fixed plate, and the power end of the telescopic cylinder is hinged to the outer wall of a slip ring.

[0011] The advantages of this utility model compared with the prior art are as follows:

[0012] 1. This practical installation cylinder can achieve quick and stable installation of the sampling head through the setting of the locking block, sliding rod and first spring, avoiding the need to rotate the sampling head during installation, as required by the traditional threaded connection method, which not only reduces the installation efficiency but also easily damages the sampling head;

[0013] 2. This utility model allows for the disassembly of the sampling head via a limiting contact component, thereby improving maintenance efficiency and preventing damage to the sampling head;

[0014] 3. This utility model can protect the sampling head by setting up a rain shelter, preventing rainwater from entering the sampling head and causing it to not dry in time, which would affect the reliability of the test data. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a sampling rack for air environment monitoring according to this utility model.

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of a sampling frame for air environment monitoring according to this utility model.

[0017] Figure 3 yes Figure 2 A magnified structural diagram of A in the diagram.

[0018] Figure 4 yes Figure 2 A magnified structural diagram of B in the diagram.

[0019] Figure 5 This is an exploded structural diagram of the folding component in a sampling rack for air environment monitoring according to this utility model.

[0020] Figure 6 yes Figure 5 A magnified structural diagram of C.

[0021] As shown in the figure: 1. Support frame, 2. Mounting base, 3. Sampling head, 4. Monitor, 5. Mounting cylinder, 6. Locking block, 7. Sliding rod, 8. Rain shelter, 9. Connecting ball, 10. Sector plate, 11. Drive ring, 12. Fixed shaft, 13. Connecting rod, 14. Drive groove, 15. Drive column, 16. Limiting groove, 17. Slip ring, 18. Telescopic cylinder, 19. Hinge rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Combined with appendix Figure 1 An air environment monitoring sampling frame includes a support frame 1 that can be raised and lowered, a mounting base 2 at the top of the support frame 1, a sampling head 3 and a monitoring instrument 4 electrically connected to the sampling head 3 on the mounting base 2.

[0025] This utility model uses a sampling head 3 to collect atmospheric samples, and then uses a monitoring instrument 4 to analyze and process the data, thereby enabling real-time monitoring of air quality. Users can set thresholds on the monitoring instrument 4, and when the monitored value exceeds the threshold, the monitoring instrument 4 will issue an alarm, thus facilitating early warning and allowing people to intervene in air quality in a timely manner, such as using a humidifier to increase humidity and remove dust to reduce fixed particles.

[0026] Traditionally, the outer wall of the sampling head 3 and the inner wall of the mounting cylinder 5 are threaded together, requiring the sampling head 3 to be rotated for installation. However, the rotation process may cause damage to the sampling head 3 due to inconvenience. To improve installation efficiency and avoid damage to the sampling head 3, in conjunction with the attached... Figure 2 and attached Figure 3 The mounting base 2 is provided with a mounting cylinder 5. The mounting cylinder 5 is circumferentially provided with a plurality of locking blocks 6 that can limit the sampling head 3. The locking blocks 6 are height-matched with the limiting groove 16 and have a triangular or right trapezoidal cross-section. The sampling head 3 is provided with a limiting groove 16 that matches the locking blocks 6 for limiting. The locking blocks 6 are provided with a sliding rod 7 that slides through the mounting cylinder 5. A first spring is provided between the mounting cylinder 5 and the locking blocks 6 and sleeved on the sliding rod 7. The bottom end of the mounting cylinder 5 is provided with a boss in the circumferential direction, and the bottom wall is provided with a second spring that abuts against the sampling head 3.

[0027] By driving the sampling head 3 downwards along the inside of the mounting cylinder 5, the bottom wall of the sampling head 3 first abuts against the inclined side of the right-angled trapezoidal structure block 6. The driving block 6 drives the slide rod 7 to slide outwards, and the first spring is compressed and stored until the bottom wall of the sampling head 3 contacts the boss. At this time, the block 6 is opposite to the limiting groove 16. The first spring resets and drives the block 6 and the limiting groove 16 to automatically cooperate. The second spring is compressed and stored. Scale lines can be marked on the outer wall of the sampling head 3, and the installation of the sampling head 3 can be visually observed by whether the scale lines coincide with the top wall of the mounting cylinder 5.

[0028] To facilitate quick and easy release of the limiting position of sampling head 3 and to facilitate disassembly and maintenance of sampling head 3, in conjunction with the attached... Figure 2 and attached Figure 3 The mounting cylinder 5 is provided with a limit release assembly that can drive the slide rod 7 to retract and release the limit. The limit release assembly includes a drive ring 11 and a fixed shaft 12 located on the outside of the mounting cylinder 5. The drive ring 11 is slidably located outside the mounting cylinder 5. The other end of the fixed shaft 12 is rotatably provided with a connecting rod 13. The two sides of the connecting rod 13 are respectively provided with drive grooves 14. The end of the slide rod 7 and the circumferential of the drive ring 11 are respectively provided with drive columns 15 that cooperate with the drive grooves 14.

[0029] By driving the drive ring 11 to rotate, the drive ring 11 drives the connecting rod 13 to rotate clockwise around the fixed shaft 12 via the drive column 15. The connecting rod 13 drives the sliding rod 7 to slide outward by cooperating with the drive column 15 on the other side through the drive groove 14. After the locking block 6 no longer limits the limiting groove 16, the sampling head 3 moves upward under the drive of the second spring, and then the sampling head 3 can be removed for maintenance.

[0030] Example 2

[0031] Based on Example 1, in rainy weather, rainwater easily enters sampling head 3 and is difficult to dry in time, which may affect the accuracy of subsequent sampling; combined with the attached... Figure 1 The mounting base 2 is provided with a rain shelter 8 above the sampling head 3 and the monitoring instrument 4 to prevent rainwater from entering the sampling head 3. The rain shelter 8 includes a connecting ball 9 and several fan-shaped plates 10 that are hinged to the connecting ball 9 in the circumferential direction and can be sealed together. The fan-shaped plates 10 can be inclined downward in the radial direction. The fan-shaped plates 10 are driven to fold by the folding component to achieve the cooperation and shielding.

[0032] Combined with appendix Figure 1 Appendix Figure 4 Appendix Figure 5 and attached Figure 6The folding assembly includes a support rod located at the top center of the mounting base 2. The support rod passes through the connecting ball 9 and has a fixing plate at the other end. A sliding ring 17 is slidably provided at the bottom end of the fixing plate. The sliding ring 17 is driven by a power component. The power component includes a telescopic cylinder 18 that hinges to the fixing plate. The power end of the telescopic cylinder 18 is hinged to the outer wall of the sliding ring 17. One side of the fan-shaped plate 10 is hinged to the connecting ball 9, and the other side is hinged to the sliding ring 17 with a hinge rod 19.

[0033] In its natural state, by driving the telescopic cylinder 18 to retract, the slip ring 17 rotates clockwise. The slip ring 17 drives the sector plate 10 through the hinge rod 19. The sector plate 10 folds upward with the hinge point with the connecting ball 9 as the axis, so as to avoid obstructing the sampling head 3 and facilitate the free introduction of air.

[0034] A rain sensor is installed at the top of the fixed plate. The rain sensor is electrically connected to the telescopic cylinder 18. Once the rain sensor detects that the weather is about to rain, it drives the telescopic cylinder 18 to extend, causing the slip ring 17 to rotate counterclockwise. The slip ring 17 drives the sector plate 10 through the hinge rod 19. The sector plate 10 folds downward with the hinge point with the connecting ball 9 as the axis, so that each sector plate 10 cooperates to achieve a seal to block the sampling head 3.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sampling frame for air environment monitoring, comprising a support frame (1) that can be raised and lowered, a mounting base (2) provided at the top of the support frame (1), a sampling head (3) and a monitoring instrument (4) electrically connected to the sampling head (3) provided on the mounting base (2), characterized in that: The mounting base (2) is provided with a mounting cylinder (5). The mounting cylinder (5) is circumferentially provided with several locking blocks (6) that can limit the sampling head (3). The locking blocks (6) are provided with sliding rods (7). A first spring is provided between the mounting cylinder (5) and the locking blocks (6) and sleeved on the sliding rods (7). The mounting cylinder (5) is provided with a limit release component that can drive the sliding rods (7) to retract and release the limit. The mounting base (2) is provided with a rain shelter (8) above the sampling head (3) and the monitoring instrument (4) to prevent rainwater from entering the sampling head (3). The rain shelter (8) includes a connecting ball (9) and several fan-shaped plates (10) that are hinged to the connecting ball (9) and can be sealed. The fan-shaped plates (10) are driven to fold by the folding component to achieve the purpose of blocking.

2. The sampling frame for air environment monitoring according to claim 1, characterized in that: The limit release assembly includes a drive ring (11) and a fixed shaft (12) located outside the mounting cylinder (5). The drive ring (11) is slidably located outside the mounting cylinder (5). The other end of the fixed shaft (12) is rotatably provided with a connecting rod (13). The two sides of the connecting rod (13) are respectively provided with drive grooves (14). The end of the slide rod (7) and the drive ring (11) are respectively provided with drive columns (15) that cooperate with the drive grooves (14).

3. The sampling frame for air environment monitoring according to claim 2, characterized in that: The mounting cylinder (5) has a boss at the bottom circumferentially and a second spring on the bottom wall that abuts against the sampling head (3).

4. The sampling frame for air environment monitoring according to claim 1, characterized in that: The sampling head (3) is provided with a limiting groove (16) around its circumference that cooperates with the locking block (6) for limiting. The locking block (6) has a height that matches the limiting groove (16) and a cross-section that is triangular or right trapezoidal.

5. A sampling frame for air environment monitoring according to claim 1, characterized in that: The folding assembly includes a support rod located at the top center of the mounting base (2), the support rod passing through the connecting ball (9) and having a fixing plate at the other end, a sliding ring (17) slidably located at the bottom end of the fixing plate, the sliding ring (17) being driven by a power component, a connecting ball (9) hinged on one side of the fan-shaped plate (10), and a hinge rod (19) hinged between the other side and the sliding ring (17).

6. A sampling frame for air environment monitoring according to claim 5, characterized in that: The power component includes a telescopic cylinder (18) with a hinged fixed plate, and the power end of the telescopic cylinder (18) is hinged to the outer wall of a slip ring (17).

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