Rotatable air sampling head

Abstract

The utility model discloses a rotatable air sampling head and relates to the technical field of measurement. A rotatable air sampling head comprises a mounting base and a sliding seat, the sliding seat is provided with a limiting device, the limiting device comprises an air comprehensive sampler, a sampling head and a mounting plate, the lower surface of the mounting plate is provided with a mounting block groove, and the upper surface of the air comprehensive sampler is fixedly connected with a mounting block; the outer wall of the mounting block is in sliding connection with the interior of the mounting block groove, a second pull rod is pulled to move upwards in the limiting device to drive a fixing clamping block to move upwards and drive a second reset spring to contract at the same time, and then the fixing clamping block moves upwards to make the outer wall of the other end of the fixing clamping block disengaged from the interior of the fixing clamping block groove. And then a first pull rod is pulled to move oppositely to drive a limiting block to move oppositely and drive a first reset spring to contract, so that the air comprehensive sampler is simple and rapid to disassemble, and the maintenance and repair efficiency of the air comprehensive sampler is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology, and in particular to a rotatable air sampling head. Background Technology

[0002] The sampling head in an integrated air sampler is a key component for collecting air samples. The following is detailed information about the sampling head of an integrated air sampler. The sampling head is part of the integrated air sampler and is mainly used to capture particulate matter and gaseous pollutants in the air. Its design and material selection directly affect the sampling effect and accuracy.

[0003] The integrated air sampler includes a sampling port, a filter membrane, and a connection section. The sampling port is where air enters the sampling head and is typically designed to minimize airflow disturbance and ensure sampling accuracy. The filter membrane is used to capture particulate matter in the air. The choice of filter membrane depends on the size and type of particulate matter to be measured. The connection section connects the sampling head to the sampling tube or other equipment, ensuring airtightness and stability.

[0004] Existing integrated air samplers draw ambient air into the sampler through a negative pressure generated by an air pump via a sampling head. As the air passes through the sampling head, particulate matter and gaseous pollutants are captured by a filter membrane or other materials for subsequent analysis. However, when maintenance and repair of integrated air samplers are required after long-term use, it is necessary for staff to use specialized tools and work in multiple people to disassemble the sampler. This operation is complicated and difficult, which reduces the efficiency of maintenance and repair of integrated air samplers and increases the workload of staff. Utility Model Content

[0005] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a rotatable air sampling head that can solve the problem that when an air sampler needs to be maintained and repaired after long-term use, it requires staff to use special tools and multiple people to disassemble the air sampler. This operation is complicated and difficult, which reduces the efficiency of maintenance and repair of the air sampler and increases the workload of staff.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotatable air sampling head, including a mounting base and a sliding seat, wherein a limiting device is provided on the sliding seat;

[0007] The limiting device includes an air sampler, a sampling head, and a mounting plate. The lower surface of the mounting plate has a mounting block groove. The upper surface of the air sampler is fixedly connected to a mounting block. The outer wall of the mounting block is slidably connected to the inside of the mounting block groove. The inner walls on both sides of the mounting block groove are provided with first limiting block grooves. Limiting blocks are slidably connected inside the two first limiting block grooves. The outer walls on both sides of the mounting block are provided with second limiting block grooves.

[0008] The mounting plate has two first pull rods slidably connected to the outer walls of the two protrusions on both sides, and two second pull rods slidably connected to the outer walls of the two protrusions on the upper surface of the mounting plate. The two protrusions on the upper surface of the mounting plate have fixed blocks slidably connected to the inside. The outer walls of the two first pull rods are fitted with first return springs. The upper surfaces of the two limit blocks are provided with fixed block grooves. The outer walls of the two second pull rods are fitted with second return springs. The sampling head is installed on the outer wall of one end of the air sampler. One end of the mounting plate is connected to the outer wall of the sliding seat by bolts.

[0009] Preferably, the interiors of the two first limiting block grooves are connected to the interiors of the protrusions on both sides of the mounting plate, and the ends of the two limiting blocks near the second limiting block grooves slide into the interior of the mounting block grooves and respectively contact the inner wall of the corresponding second limiting block grooves.

[0010] Among them, the outer walls of the four T-shaped blocks on the mounting block are slidably connected to the four T-shaped slots inside the mounting block groove, and the ends of the two first pull rods near the limiting blocks are slidably extended into the grooves of the first limiting blocks and are respectively fixedly connected to one end of the corresponding limiting blocks.

[0011] Preferably, the interiors of the two first limiting block slots are connected to the interiors of the two protrusions on the upper surface of the mounting plate, and the ends of the two second pull rods near the fixing blocks are slidably extended into the interiors of the protrusions on the upper surface of the mounting plate and are respectively fixedly connected to one end of the corresponding fixing blocks. The two ends of the two first reset springs are respectively fixedly connected to one end of the corresponding limiting block and the inner wall of the protrusions on both sides of the mounting plate.

[0012] The two fixing blocks have their ends near the fixing block slots slidably extended into the interior of the first limiting block slot and respectively contact the inner wall of the corresponding fixing block slot. The two ends of the two second reset springs are respectively fixedly connected to one end of the corresponding fixing block and the inner wall of the protrusion on the upper surface of the mounting plate.

[0013] Preferably, a rotating gear seat is installed inside a groove on the upper surface of the mounting base, and a support column is fixedly connected to the upper surface of the rotating gear seat;

[0014] The support column is hollow, and a second motor is installed inside the groove on the upper surface of the mounting base.

[0015] Preferably, a rotating gear is fixedly connected to the output end of the second motor, and the teeth on the outer wall of the rotating gear mesh with the teeth on the lower end of the rotating gear seat;

[0016] The rotating gear has a threaded rod inside, and the sliding seat is sleeved on the outside of the support column.

[0017] Preferably, a first motor is fixedly connected to the upper surface of the support column, and the output end of the first motor extends rotatably into the interior of the support column and is fixedly connected to one end of the threaded rod.

[0018] The sliding seat is threaded to the outer wall of the threaded rod, and the outer wall of the tapered block on both sides of the sliding seat is slidably connected to the tapered groove on both sides of the support column.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This rotatable air sampling head, by pulling the second pull rod upward through the limiting device, moves the fixing block upward and simultaneously retracts the second return spring. Then, by moving the fixing block upward, its other end outer wall disengages from the inside of the fixing block groove. Then, by pulling the first pull rod in the opposite direction, it moves the limiting block in the opposite direction and simultaneously retracts the first return spring. Then, by moving the limiting block in the opposite direction, its other end outer wall disengages from the inside of the second limiting block groove. Finally, by pulling the air sampler, the air sampler and mounting block can be removed from the mounting plate. This method of disassembling the air sampler is simple and quick, effectively improving the maintenance and repair efficiency of the air sampler, while reducing the workload of the staff. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the support column of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the mounting plate of this utility model;

[0025] Figure 4 This utility model Figure 2 A structural schematic diagram of the enlarged view at point A in the middle.

[0026] Reference numerals: 1. Mounting base; 2. Rotating gear seat; 3. Rotating gear; 4. First pull rod; 5. Integrated air sampler; 6. Sampling head; 7. First return spring; 8. Second pull rod; 9. Mounting plate; 10. First motor; 11. Fixing block; 12. Sliding seat; 13. Support column; 14. Second motor; 15. Threaded rod; 16. Fixing block slot; 17. Second return spring; 18. Limiting block; 19. First limiting block slot; 20. Mounting block; 21. Second limiting block slot; 22. Mounting block slot. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Please see Figure 1-4 This utility model provides a technical solution: a rotatable air sampling head, including a mounting base 1 and a sliding seat 12;

[0032] A limit device is provided on the sliding seat 12;

[0033] The limiting device includes an air sampler 5, a sampling head 6, and a mounting plate 9. The lower surface of the mounting plate 9 has a mounting block groove 22. A mounting block 20 is fixedly connected to the upper surface of the air sampler 5. The outer wall of the mounting block 20 is slidably connected to the interior of the mounting block groove 22. First limiting block grooves 19 are formed on both inner walls of the mounting block groove 22. Limiting blocks 18 are slidably connected inside both first limiting block grooves 19. Second limiting block grooves 21 are formed on both outer walls of the mounting block 20. First pull rods 4 are slidably connected to the outer walls of the protrusions on both sides of the mounting plate 9. The interior of the limiting block groove 19 is connected to the interior of the protrusions on both sides of the mounting plate 9. The ends of the two limiting blocks 18 near the second limiting block groove 21 slide into the interior of the mounting block groove 22 and respectively contact the inner wall of the corresponding second limiting block groove 21. The outer walls of the four T-shaped blocks on the mounting block 20 are slidably connected to the interior of the four T-shaped grooves inside the mounting block groove 22. The ends of the two first pull rods 4 near the limiting blocks 18 slide into the interior of the first limiting block groove 19 and are respectively fixedly connected to the end of the corresponding limiting block 18. The outer walls of the two protrusions on the upper surface of the mounting plate 9 are slidably connected. The two first limit block grooves 19 are connected to the second pull rod 8. The interiors of the two first limit block grooves 19 are correspondingly connected to the interiors of the two protrusions on the upper surface of the mounting plate 9. The interiors of the two protrusions on the upper surface of the mounting plate 9 are slidably connected to the fixing blocks 11. The ends of the two second pull rods 8 near the fixing blocks 11 are slidably extended into the interiors of the protrusions on the upper surface of the mounting plate 9 and are respectively fixedly connected to the ends of the corresponding fixing blocks 11. The outer walls of the two first pull rods 4 are fitted with first return springs 7. The two ends of the two first return springs 7 are respectively fixedly connected to the ends of the corresponding limit blocks 18 and the inner walls of the protrusions on both sides of the mounting plate 9. The upper surface of each position block 18 is provided with a fixing block groove 16. The ends of the two fixing blocks 11 near the fixing block groove 16 slide into the interior of the first limiting block groove 19 and respectively contact the inner wall of the corresponding fixing block groove 16. The outer walls of the two second pull rods 8 are each sleeved with a second return spring 17. The two ends of the two second return springs 17 are respectively fixedly connected to one end of the corresponding fixing block 11 and the inner wall of the protrusion on the upper surface of the mounting plate 9. The sampling head 6 is installed on the outer wall of one end of the air integrated sampler 5. One end of the mounting plate 9 is connected to the outer wall of the sliding seat 12 by bolts.

[0034] The mounting base 1 has a groove on its upper surface in which a rotating gear seat 2 is installed. A support column 13 is fixedly connected to the upper surface of the rotating gear seat 2. The support column 13 is hollow. A second motor 14 is installed inside the groove on the upper surface of the mounting base 1. A rotating gear 3 is fixedly connected to the output end of the second motor 14. The teeth on the outer wall of the rotating gear 3 mesh with the teeth on the lower end of the rotating gear seat 2. A threaded rod 15 is rotatably connected inside the rotating gear 3. A sliding seat 12 is sleeved on the outside of the support column 13. A first motor 10 is fixedly connected to the upper surface of the support column 13. The output end of the first motor 10 extends rotatably into the interior of the support column 13 and is fixedly connected to one end of the threaded rod 15. The sliding seat 12 is threadedly connected to the outer wall of the threaded rod 15. The outer walls of the conical blocks on both sides of the sliding seat 12 are slidably connected to the conical grooves on both sides of the support column 13.

[0035] Furthermore, when using the device, it is started by connecting to an external power source. The device is installed in the designated position by four mounting bolts on the mounting base 1. Then, the output end of the first motor 10 rotates, driving the threaded rod 15 to rotate and simultaneously moving the sliding seat 12 up and down. Then, the up and down movement of the sliding seat 12 drives the mounting plate 9 to move up and down, thereby adjusting the height of the air sampler 5. Next, the air sampler 5 collects external air through the sampling head 6. When it is necessary to adjust the angle of the air sampler 5, the output end of the second motor 14 rotates, driving the rotating gear 3 to rotate and simultaneously rotating the rotating gear seat 2. In this way, the rotating gear seat 2 rotates... Rotate the air sampler 5 around the support column 13 to adjust the angle. When it is necessary to disassemble the air sampler 5, pull the second pull rod 8 to move it upward, which moves the fixing block 11 upward and at the same time moves the second return spring 17 to retract. Then, the fixing block 11 moves upward so that its other end outer wall is disengaged from the inside of the fixing block groove 16. Then, pull the first pull rod 4 to move it in the opposite direction, which moves the limiting block 18 in the opposite direction and at the same time moves the first return spring 7 to retract. Then, the limiting block 18 moves in the opposite direction so that its other end outer wall is disengaged from the inside of the second limiting block groove 21. Then, pull the air sampler 5 to remove the air sampler 5 and the mounting block 20 from the mounting plate 9.

[0036] By pulling the second lever 8 upward through the limiting device, the fixed block 11 moves upward, causing the second return spring 17 to retract. Then, the fixed block 11 moves upward, causing its other outer wall to disengage from the inside of the fixed block groove 16. Then, pulling the first lever 4 in the opposite direction causes the limiting block 18 to move in the opposite direction, causing the first return spring 7 to retract. Then, the limiting block 18 moves in the opposite direction, causing its other outer wall to disengage from the inside of the second limiting block groove 21. Finally, pulling the air sampler 5 allows the air sampler 5 and the mounting block 20 to be removed from the mounting plate 9. This method of disassembling the air sampler 5 is simple and quick, effectively improving the maintenance and repair efficiency of the air sampler 5, while reducing the workload of the staff.

[0037] Structural Description: Mounting Base 1: The basic support structure of the equipment, with four mounting bolt holes at the bottom for fixing the equipment, providing stable foundation support, and ensuring that the equipment does not shift or tilt during operation;

[0038] Rotating gear seat 2 and rotating gear 3: Annular structure, with rotating gear 3 inside, used to drive the air sampler 5 to rotate. The rotating gear 3 is connected to the output end of the second motor 14 to realize the rotation function and realize the angle adjustment of the air sampler 5 to meet the sampling requirements in different directions;

[0039] First pull rod 4: Operating rod structure, linked with limit block 18, used to unlock the fixation of air sampler 5. When the first pull rod 4 is pulled, the limit block 18 moves laterally and disengages from the second limit block slot 21, simplifying the disassembly process and facilitating quick maintenance or replacement of air sampler 5.

[0040] Air sampler 5 and sampling head 6: core sampling equipment, integrating sampling head 6 for collecting external air samples. It is fixed to the mounting plate 9 by mounting block 20 and can be adjusted in height and angle to achieve accurate collection of air samples and meet the sampling needs of different scenarios.

[0041] First return spring 7: A helical spring sleeved inside the first pull rod 4, providing elastic return force. Both ends of the spring are fixed to the first pull rod 4 and the mounting plate 9, so that the spring will automatically return to its original position after the first pull rod 4 is pulled, reducing manual intervention and improving operating efficiency.

[0042] Second pull rod 8: An operating lever structure, linked with the fixed locking block 11, used to unlock the fixing of the rotating gear seat 2. When the second pull rod 8 is pulled, it causes the fixed locking block 11 to move upward and disengage from the fixed locking block slot 16;

[0043] Mounting plate 9: Support structure, used to fix the integrated air sampler 5, can move up and down, and is connected to the threaded rod 15 through the sliding seat 12 to achieve height adjustment;

[0044] First electric motor 10: power unit, with its output end connected to threaded rod 15, used to drive the sliding seat 12 to move up and down;

[0045] Fixed block 11: A symmetrical protrusion structure arranged on the side wall of the rotating gear seat 2, which can slide up and down, and is locked into the fixed block groove 16 by the elastic force of the second return spring 17 to form a mechanical lock;

[0046] Sliding seat 12: A sliding structure that engages with threaded rod 15 to drive the mounting plate 9 to move up and down. The up and down movement is achieved by rotating threaded rod 15.

[0047] Support column 13: a central support structure used to fix the rotating gear seat 2 and the air sampler 5, which rotate around the support column 13.

[0048] Second electric motor 14: power unit, output end connected to rotating gear 3, used to drive rotating gear seat 2 to rotate, and directly connected to rotating gear 3 through output end;

[0049] Threaded rod 15: A screw structure that meshes with the sliding seat 12 and is used to drive the sliding seat 12 to move up and down. The rotation of the first motor 10 drives the threaded rod 15 to rotate.

[0050] Second return spring 17: a helical spring sleeved inside the second pull rod 8, providing elastic return force, with both ends of the spring fixed to the second pull rod 8 and the rotating gear seat 2;

[0051] Limiting block 18:

[0052] The symmetrically arranged protruding structures on the side wall of the mounting plate 9 can slide laterally and are locked into the second limiting block groove 21 by the elastic force of the first reset spring 7, forming a mechanical lock.

[0053] Mounting block 20: A connecting structure used to fix the integrated air sampler 5 and the mounting plate 9, and is locked by the limiting block 18 and the second limiting block slot 21.

[0054] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A rotatable air sampling head, comprising a mounting base (1) and a sliding base (12), characterized in that: A limit device is provided on the sliding seat (12); The limiting device includes an air sampler (5), a sampling head (6), and a mounting plate (9). The lower surface of the mounting plate (9) is provided with a mounting block groove (22). The upper surface of the air sampler (5) is fixedly connected with a mounting block (20). The outer wall of the mounting block (20) is slidably connected to the interior of the mounting block groove (22). The inner walls on both sides of the mounting block groove (22) are provided with first limiting block grooves (19). The interiors of the two first limiting block grooves (19) are slidably connected with limiting blocks (18). The outer walls on both sides of the mounting block (20) are provided with second limiting block grooves (21). Among them, the outer walls of the two protrusions on both sides of the mounting plate (9) are slidably connected with the first pull rod (4), the outer walls of the two protrusions on the upper surface of the mounting plate (9) are slidably connected with the second pull rod (8), the two protrusions on the upper surface of the mounting plate (9) are slidably connected with the fixing block (11), the outer walls of the two first pull rods (4) are sleeved with the first return spring (7), the upper surfaces of the two limit blocks (18) are provided with the fixing block groove (16), the outer walls of the two second pull rods (8) are sleeved with the second return spring (17), the sampling head (6) is installed on the outer wall of one end of the air integrated sampler (5), and one end of the mounting plate (9) is connected to the outer wall of the sliding seat (12) by bolts.

2. The rotatable air sampling head according to claim 1, characterized in that: The interiors of the two first limiting block grooves (19) are connected to the interiors of the protrusions on both sides of the mounting plate (9). The ends of the two limiting blocks (18) near the second limiting block groove (21) slide into the interior of the mounting block groove (22) and contact the inner wall of the corresponding second limiting block groove (21). Among them, the outer walls of the four T-shaped blocks on the mounting block (20) are slidably connected to the four T-shaped slots inside the mounting block groove (22), and the ends of the two first pull rods (4) near the limiting block (18) are slidably extended into the interior of the first limiting block groove (19) and are respectively fixedly connected to one end of the corresponding limiting block (18).

3. The rotatable air sampling head according to claim 1, characterized in that: The interiors of the two first limiting block grooves (19) are connected to the interiors of the two protrusions on the upper surface of the mounting plate (9). The ends of the two second pull rods (8) near the fixing block (11) slide to the interiors of the protrusions on the upper surface of the mounting plate (9) and are respectively fixedly connected to the ends of the corresponding fixing blocks (11). The two ends of the two first return springs (7) are respectively fixedly connected to the ends of the corresponding limiting blocks (18) and the inner walls of the protrusions on both sides of the mounting plate (9). Among them, the two fixed blocks (11) near the fixed block groove (16) slide to the inside of the first limiting block groove (19) and contact the inner wall of the corresponding fixed block groove (16) respectively. The two ends of the two second reset springs (17) are fixedly connected to one end of the corresponding fixed block (11) and the inner wall of the protrusion on the upper surface of the mounting plate (9) respectively.

4. A rotatable air sampling head according to claim 1, characterized in that: The mounting base (1) has a groove on its upper surface, in which a rotating gear seat (2) is installed. A support column (13) is fixedly connected to the upper surface of the rotating gear seat (2). Among them, the support column (13) is hollow, and the second motor (14) is installed inside the groove on the upper surface of the mounting base (1).

5. A rotatable air sampling head according to claim 4, characterized in that: The output end of the second motor (14) is fixedly connected to a rotating gear (3), and the teeth on the outer wall of the rotating gear (3) mesh with the teeth at the lower end of the rotating gear seat (2); The rotating gear (3) is internally connected to a threaded rod (15), and the sliding seat (12) is sleeved on the outside of the support column (13).

6. A rotatable air sampling head according to claim 4, characterized in that: The upper surface of the support column (13) is fixedly connected to a first motor (10), and the output end of the first motor (10) extends rotatably into the interior of the support column (13) and is fixedly connected to one end of the threaded rod (15). Among them, the sliding seat (12) is threaded to the outer wall of the threaded rod (15), and the outer wall of the tapered block on both sides of the sliding seat (12) is correspondingly slidably connected to the tapered groove on both sides of the support column (13).

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