Water resource pollutant detection device

Abstract

The invention relates to the technical field of water resource detection, in particular to a water resource pollutant detection device which comprises an upper cover frame, a center water storage tank is fixedly connected to the center of the bottom end of the upper cover frame, a lower cover frame is fixedly connected to the bottom end of the center water storage tank, and flow dividing frames are fixedly connected to the four sides of the side face of the center water storage tank. One end of the shunting frame is fixedly connected with a detection tank, an upper limiting seat is arranged at the top end of the central water storage tank, a lower limiting seat is arranged at the bottom end of the central water storage tank, an annular air bag is arranged in the center of the interior of the central water storage tank, and the outer surface of the annular air bag is sleeved with an annular contraction rubber cover. Through the arrangement of the upper cover frame, the central water storage tank, the lower cover frame, the diversion frame and the detection tank, more sufficient and accurate pollutant detection operation of water resources can be realized, and in the actual use process, a worker firstly injects the water resources needing to be detected into the central water storage tank between the upper cover frame and the lower cover frame.

Description

Technical Field

[0001] The invention relates to the technical field of water resource detection, and in particular to a water resource pollutant detection device. Background Art

[0002] Water is the source of life. Scientific and reasonable protection of water resources requires the investment of advanced technology and equipment. Water resource monitoring is used by water departments to monitor water intake from self-supplied wells, monitor water inlet and outlet flow of water plants, monitor open channel flow, monitor groundwater levels, monitor water quality at water sources, and conduct remote water sales management. It plays an important role in effectively protecting water resources, rationally utilizing water resources, and enhancing social awareness of water conservation. The quantity and quality of surface water and groundwater change with time and space. This dynamic change is the result of the combined effects of various natural and human factors. Through water resource monitoring, we can timely understand the dynamic changes in water quantity and quality, grasp the laws of change, and thus In order to provide a scientific basis for formulating water resources development, utilization and protection plans, the quantity and quality of water resources are monitored through dynamic monitoring points of water resources. In order to make the monitoring results more accurate, existing hydrological stations, rain gauges and meteorological stations are often included in the dynamic monitoring network of water resources. The method of monitoring water volume is simple and easy. For surface water resources, the water volume can be determined by water level observation and flow test. For groundwater resources, the change of flow rate can be monitored through observation holes or springs. The frequency of water volume and level monitoring can be determined according to the specific characteristics of the water body and the monitoring requirements. When monitoring water volume, the data of local meteorological and hydrological stations should be used as much as possible.

[0003] For example, a patent document with announcement number CN 108731983 B discloses a sampling device for water resource detection, including a test tube fixing hole and a rubber fixing ring; a rotating handle is installed on the front end surface of the reel, and the rotating handle is rotatably connected to the outer end surface of the reel, and the reel is connected to the handle through a traction rope; the handle is an arc strip structure, and both ends of the bottom of the handle are installed on the top end surface of the collection bucket; the counterweight block is installed at the bottom of the collection bucket, and the top of the connecting block is installed on the arc end surface of the bottom of the counterweight block by screws; the two silt collection holes opened by the silt collection cone are chamfered structures, and the silt collection cone is located at the bottom of the collection bucket; it is convenient to collect water samples from deeper rivers and wells through the device, so that personnel do not need to slide down to the water surface, and can immediately collect water samples at a distance from the water surface, making sample collection work easier.

[0004] However, during the process of water resource pollutant detection, due to the limitation of its own structure, this structure can only perform repeated pollutant detection on the entire water resource sample that needs to be detected, and cannot realize the rapid and uniform distribution and detection operation of the sample water. In addition, after the divided sample water completes various pollution tests, the sample water cannot be remixed and then divided to ensure the repeated detection operation of the sample. The final result of the test has certain limitations and cannot reflect the actual pollution conditions more truly and efficiently. At the same time, the equipment cannot perform rapid extraction and detection operations of water resources at different depths and cannot meet daily use needs. Therefore, it is urgent to design a water resource pollutant detection device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a water resource pollutant detection device to solve the problem that the existing structure proposed in the above background technology can only perform repeated pollutant detection on the entire water resource sample to be detected due to its own structural limitations during the water resource pollutant detection process, and cannot achieve a rapid and uniform distribution and detection operation of the sample water. In addition, after the divided sample water completes various pollution detections, the sample water cannot be re-mixed and then divided to ensure that the sample is repeatedly tested. The final result of the detection has certain limitations and cannot reflect the actual pollution conditions more truly and efficiently. At the same time, the equipment cannot perform rapid extraction and detection operations of water resources at different depths and cannot meet daily usage needs.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water resource pollutant detection device, comprising an upper cover frame, the bottom center of the upper cover frame is fixedly connected to a central water storage tank, the bottom end of the central water storage tank is fixedly connected to a lower cover frame, the four sides of the side of the central water storage tank are fixedly connected to a diversion frame, one end of the diversion frame is fixedly connected to a detection tank, the top of the central water storage tank is provided with an upper limit seat, the bottom end of the central water storage tank is provided with a lower limit seat, the inner center of the central water storage tank is provided with an annular airbag, and the outer surface of the annular airbag is provided with an annular shrink rubber cover;

[0007] A water control pump is fixedly connected to the water control pump at the bottom center of the lower cover frame, the bottom end of the water control pump is fixedly connected to a floating frame, the bottom end of the floating frame is fixedly connected to a retractable cover, a lifting pipe is arranged at the inner center of the floating frame and the retractable cover, one end of the lifting pipe is fixedly connected to a connecting valve seat, and a water suction head is arranged at the bottom end of the connecting valve seat.

[0008] Preferably, the outer surface of the water suction head is provided with an adsorption ring sleeve, and a water level sensor is provided on one side of the adsorption ring sleeve.

[0009] Preferably, an anti-bending inner core is provided inside the lifting tube, and a water flowing inner tube is provided on the inner wall of the anti-bending inner core.

[0010] Preferably, a retractable turntable is provided at the inner center of the floating frame, and a first connecting port is provided at the inner center of the inner wall of the retractable turntable.

[0011] Preferably, rotating gear rings are sleeved on the upper and lower ends of the retractable turntable, a driving gear roller is provided on one side of the inner wall of the floating frame, a driving motor is provided on the top of the driving gear roller, and a floating airbag is provided on the side of the floating frame.

[0012] Preferably, the four sides of the annular shrinkable rubber cover are fixedly connected with docking sockets, the upper and lower ends of the docking sockets are fixedly connected with limiting sliders, the sides of the docking sockets are provided with ejection air bags, and the four sides of the sides of the central water tank are provided with drainage side grooves.

[0013] Preferably, the four sides of the upper and lower surfaces of the upper cover frame and the lower cover frame are fixedly connected with mounting sleeves, an equipment socket is arranged inside the mounting sleeve, a detection unit body is arranged between the upper and lower equipment sockets, a water uniforming hood is fixedly connected between the upper and lower mounting sleeves, and a water guide frame is fixedly connected to the side of the water uniforming hood.

[0014] Preferably, a second connecting port is provided at the inner center of the upper limit seat, limiting slide rails are provided on four sides of the second connecting port, a detection liner is provided on the inner wall of the detection tank, and a water diversion trough is provided inside the diversion rack.

[0015] Preferably, an air control pump is arranged at the center of the surface of the upper cover frame, and a transmission antenna is arranged on the top of the air control pump.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The water resource pollutant detection device can realize a more complete and accurate water resource pollutant detection operation by arranging an upper cover frame, a central water storage tank, a lower cover frame, a diversion frame, a detection tank, an upper limit seat, a lower limit seat, an annular air bag, an annular shrink rubber cover, a docking card seat, a limit slider, an ejection air bag, a drainage side groove, a mounting sleeve seat, an equipment seat, a detection unit body, a water uniformity cover, a water guide frame, a second connecting port, a limit slide rail, a detection liner, a water diversion tank, an air control pump and a transmission antenna. In the actual use process, the staff first The water resources to be tested are injected into the central water storage tank between the upper cover frame and the lower cover frame, and then the air control pump on the surface of the upper cover frame can be started to inflate the interior of the central water storage tank, and the annular air bag inside the central water storage tank is inflated to make the annular shrink rubber cover to perform a rapid annular expansion operation. During the expansion process, the docking seats on the four sides of the annular shrink rubber cover evenly squeeze the water resources inside the central water storage tank to the drainage side grooves on the four sides of the central water storage tank, and at this time, the limit slides at the upper and lower ends of the docking seat The block slides along the limiting rails on the four sides of the upper limit seat to adapt the ejection airbag to the drainage side grooves on the four sides of the central water storage tank. When the annular shrink rubber cover fills the interior of the central water storage tank, the annular airbag can be inflated to the ejection airbag inside the docking seat, and then the ejection airbag is extended into the diverter rack on the four sides of the central water storage tank, squeezing the water resources inside the diverter rack into the detection tank at one end of the diverter rack, and then evenly guided by the water uniformity cover and the water guide frame inside the detection tank. The detection unit body between the equipment sockets performs uniform material distribution detection operations, and the detection results inside the four groups of detection tanks on the side can be summarized and sent out through the transmission antenna on the top of the air control pump, so as to realize efficient water resource distribution pollution detection operations on one side. At the same time, the annular airbag can be exhausted after one detection, and the annular shrinkage rubber cover shrinks as a whole, so that the water resources are re-mixed inside the central water storage tank, and then the annular airbag is inflated to carry out pollution detection operations for re-distribution, so as to realize accurate calibration of the test structure, which reflects the practicality of the equipment design.

[0018] The water resource pollutant detection device further improves the overall use effect of the equipment through the upper cover frame, central water storage tank, lower cover frame, water control pump, floating frame, retractable cover, lifting pipe, connecting valve seat, water suction head, adsorption ring sleeve, water level sensor, anti-bending inner core, water flowing inner tube, retractable turntable, first connecting port, rotating gear ring, driving gear roller, driving motor and floating airbag. In daily use, the staff can place the entire equipment on the water resource to be detected through the floating frame, and the floating airbag on the side of the floating frame provides stable buoyancy support during floating, and then the driving motor is started to make it pass through the driving gear roller at one end to float on the floating frame. The first connecting port is driven internally to rotate, thereby realizing the stable rotation operation of the retractable turntable as a whole inside the floating frame, and then the lifting tube as a whole is retracted and unwound on the retractable turntable. The anti-folding inner core and the water flow inner tube inside the lifting tube can also ensure the internal rapid water pumping and release operation when the retractable and unwound winding is wound. The connecting valve seat and the water suction head are placed at a suitable water level as a whole through the lifting tube. The water level sensor monitors the water level, and then the water control pump between the lower cover frame and the floating frame is started to realize the water resource pollutant detection operation at different water levels, so as to ensure that the equipment can achieve more comprehensive water resource pollutant detection work, which reflects the comprehensiveness of the equipment design. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention;

[0020] Figure 2 It is an overall schematic diagram of the central water storage tank structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the interior of the central water storage tank structure of the present invention;

[0022] Figure 4 It is an overall schematic diagram of the device socket structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the interior of the floating frame structure of the present invention;

[0024] Figure 6 It is an overall schematic diagram of the lifting tube structure of the present invention;

[0025] Figure 7 For the present invention Figure 1 A magnified schematic diagram of the structure at center A;

[0026] Figure 8 For the present invention Figure 1 A magnified schematic diagram of the structure at B in the figure.

[0027] In the figure: 1. Upper cover frame; 2. Central water storage tank; 3. Lower cover frame; 4. Diverter frame; 5. Detection tank; 6. Upper limit seat; 7. Lower limit seat; 8. Annular airbag; 9. Annular shrink rubber cover; 10. Water control pump; 11. Floating frame; 12. Retractable cover; 13. Lifting pipe; 14. Connecting valve seat; 15. Water suction head; 16. Adsorption ring sleeve; 17. Water level sensor; 18. Anti-bending inner core; 19. Water flow inner pipe; 20. Retractable turntable; 21. First Connecting port; 22, rotating gear ring; 23, driving gear roller; 24, driving motor; 25, floating airbag; 26, docking card seat; 27, limiting slider; 28, ejection airbag; 29, drainage side groove; 30, installation sleeve; 31, equipment socket; 32, detection unit body; 33, water distribution cover; 34, water guide frame; 35, second connecting port; 36, limiting slide rail; 37, detection liner; 38, water distribution tank; 39, air control pump; 40, transmission antenna. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-8 , an embodiment provided by the present invention:

[0030] A water resource pollutant detection device comprises an upper cover frame 1, a central water storage tank 2 is fixedly connected to the bottom center of the upper cover frame 1, a lower cover frame 3 is fixedly connected to the bottom end of the central water storage tank 2, a diversion frame 4 is fixedly connected to the four sides of the side of the central water storage tank 2, a detection tank 5 is fixedly connected to one end of the diversion frame 4, an upper limit seat 6 is arranged at the top of the central water storage tank 2, a lower limit seat 7 is arranged at the bottom end of the central water storage tank 2, an annular air bag 8 is arranged at the inner center of the central water storage tank 2, an annular shrink rubber cover 9 is sleeved on the outer surface of the annular air bag 8, a docking card seat 26 is fixedly connected to the four sides of the side of the annular shrink rubber cover 9, a limit slider 27 is fixedly connected to the upper and lower ends of the docking card seat 26, an ejection air bag 28 is arranged on the side of the docking card seat 26, a drainage side groove 29 is opened on the four sides of the side of the central water storage tank 2, a mounting sleeve 30 is fixedly connected to the four sides of the upper and lower surfaces of the upper cover frame 1 and the lower cover frame 3, an equipment connector 31 is arranged inside the mounting sleeve 30, and a device connector 31 is arranged inside the upper and lower surfaces of the upper and lower surfaces of the upper and lower surfaces of the lower and upper surfaces of the lower and upper surfaces of the lower and upper surfaces of the upper and lower surfaces of the lower and upper surfaces of the lower and upper surfaces of the lower and upper surfaces of the lower and upper surfaces of the lower and upper surfaces of the lower and upper surfaces of the lower and upper surfaces of the lower and upper surfaces of the lower and upper surfaces of the lower and lower surfaces of the lower and upper surfaces of the lower and lower surfaces of the lower and upper surfaces of the lower and lower surfaces of the lower and upper surfaces of the lower and lower surfaces of the lower and upper surfaces of the lower and lower A detection unit body 32 is arranged between the equipment sockets 31, a water uniforming cover 33 is fixedly connected between the upper and lower mounting sleeves 30, a water guide frame 34 is fixedly connected to the side of the water uniforming cover 33, a second connecting port 35 is arranged at the inner center of the upper limit seat 6, and limiting slide rails 36 are arranged on the four sides of the second connecting port 35, a detection liner 37 is arranged on the inner wall of the detection tank 5, a water diversion groove 38 is opened inside the diversion frame 4, an air control pump 39 is arranged at the center of the surface of the upper cover frame 1, and a transmission antenna 40 is arranged on the top of the air control pump 39, the air control pump 39 on the surface of the upper cover frame 1 is started, and the interior of the central water storage tank 2 is inflated, and the annular airbag 8 inside the central water storage tank 2 is inflated, so that the annular shrink rubber cover 9 is quickly expanded in an annular manner. During the expansion process, the docking seat 26 on the four sides of the annular shrink rubber cover 9 evenly squeezes the water resources inside the central water storage tank 2 to the drainage side groove 29 on the four sides of the central water storage tank 2.

[0031] A water control pump 10 is fixedly connected to the center of the bottom end of the lower cover frame 3. The bottom end of the water control pump 10 is fixedly connected to a floating frame 11. The bottom end of the floating frame 11 is fixedly connected to a retractable cover 12. A lifting pipe 13 is arranged at the inner center of the floating frame 11 and the retractable cover 12. One end of the lifting pipe 13 is fixedly connected to a connecting valve seat 14. A water suction head 15 is arranged at the bottom end of the connecting valve seat 14. An outer surface of the water suction head 15 is sleeved with an adsorption ring sleeve 16. A water level sensor 17 is arranged on one side of the adsorption ring sleeve 16. An anti-bending inner core 18 is arranged inside the lifting pipe 13. A flowing water inner tube 19 is arranged on the inner wall of the anti-bending inner core 18. A retractable turntable 20 is arranged at the inner center of the floating frame 11. The inner wall center of the retractable turntable 20 is arranged with a first A connecting port 21, the upper and lower ends of the retractable turntable 20 are sleeved with rotating gear rings 22, a driving gear roller 23 is arranged on one side of the inner wall of the floating frame 11, a driving motor 24 is arranged on the top of the driving gear roller 23, and a floating airbag 25 is arranged on the side of the floating frame 11. The entire equipment is placed on the water resources that need to be detected through the floating frame 11, and the floating airbag 25 on the side of the floating frame 11 provides stable buoyancy support during floating, and then the driving motor 24 is started, so that it drives the first connecting port 21 to rotate inside the floating frame 11 through the driving gear roller 23 at one end, thereby realizing the stable rotation operation of the retractable turntable 20 as a whole inside the floating frame 11, and then the lifting tube 13 as a whole performs the retractable and unreeling operation on the retractable turntable 20.

[0032] Working principle: When in use, the user first injects the water resources to be tested into the central water storage tank 2 between the upper cover frame 1 and the lower cover frame 3, and then starts the air control pump 39 on the surface of the upper cover frame 1 to inflate the interior of the central water storage tank 2, and inflate the annular airbag 8 inside the central water storage tank 2, so that the annular shrinkable rubber cover 9 can be quickly expanded in an annular manner. During the expansion process, the docking seat 26 on the four sides of the annular shrinkable rubber cover 9 evenly squeezes the water resources inside the central water storage tank 2 to the drainage side grooves 29 on the four sides of the central water storage tank 2, and at this time, the limit sliders 27 at the upper and lower ends of the docking seat 26 move along the limit slide rails 36 on the four sides of the upper limit seat 6. The ejection airbag 28 is adaptively docked to the drainage side grooves 29 on the four sides of the central water storage tank 2 by sliding in a limited position. When the annular shrink rubber cover 9 fills the interior of the central water storage tank 2, the annular airbag 8 can be inflated to the ejection airbag 28 inside the docking seat 26, and then the ejection airbag 28 is extended into the diverter rack 4 on the four sides of the central water storage tank 2, squeezing the water resources inside the diverter rack 4 into the detection tank 5 at one end of the diverter rack 4, and then the detection tank 5 is evenly guided by the water distribution cover 33 and the water guide frame 34, and the detection unit body 32 between the equipment seat 31 performs uniform material distribution detection operation. The detection results inside the four groups of detection tanks 5 on the side can be controlled by the air pump machine The transmission antenna 40 at the top of 39 is gathered and sent out to realize efficient water resource classification pollution detection operation on one side. At the same time, after one detection, the annular airbag 8 can be exhausted, and the annular shrinkable rubber cover 9 shrinks as a whole, so that the water resources are mixed again inside the central water storage tank 2, and the annular airbag 8 is inflated again to perform pollution detection operation of re-classification, so as to realize accurate calibration of the test structure. In daily use, the staff can place the entire equipment on the water resources to be detected through the floating frame 11, and the floating airbag 25 on the side of the floating frame 11 provides stable buoyancy support during floating, and then the drive motor 24 is started to drive the first connecting port 2 inside the floating frame 11 through the driving gear roller 23 at one end. 1 is rotated, thereby realizing the stable rotation operation of the retractable turntable 20 as a whole inside the floating frame 11, and then the lifting tube 13 as a whole is retracted and unwound on the retractable turntable 20. The anti-bend inner core 18 and the water flow inner tube 19 inside the lifting tube 13 can also ensure the internal rapid water pumping operation when winding and unwinding. The connecting valve seat 14 and the water suction head 15 are placed to a suitable water level as a whole through the lifting tube 13. The water level sensor 17 monitors the water level. After that, the water control pump 10 between the lower cover frame 3 and the floating frame 11 is started, and the water resource pollutant detection operation at different water levels can be realized to ensure that the equipment can realize more comprehensive water resource pollutant detection work. The above is the entire working principle of the present invention.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A water resource pollutant detection device, comprising an upper cover frame (1), characterized in that: The center of the bottom end of the upper cover frame (1) is fixedly connected to a central water storage tank (2), the bottom end of the central water storage tank (2) is fixedly connected to a lower cover frame (3), the four sides of the side of the central water storage tank (2) are fixedly connected to a diversion frame (4), one end of the diversion frame (4) is fixedly connected to a detection tank (5), the top of the central water storage tank (2) is provided with an upper limit seat (6), the bottom end of the central water storage tank (2) is provided with a lower limit seat (7), the inner center of the central water storage tank (2) is provided with an annular air bag (8), and the outer surface of the annular air bag (8) is provided with an annular shrink rubber cover (9); A water control pump (10), the center of the bottom end of the lower cover frame (3) is fixedly connected to the water control pump (10), the bottom end of the water control pump (10) is fixedly connected to a floating frame (11), the bottom end of the floating frame (11) is fixedly connected to a retractable cover (12), a lifting pipe (13) is provided at the inner center of the floating frame (11) and the retractable cover (12), one end of the lifting pipe (13) is fixedly connected to a connecting valve seat (14), and a water suction head (15) is provided at the bottom end of the connecting valve seat (14).

2. A water resource pollutant detection device according to claim 1, characterized in that: The outer surface of the water suction head (15) is sleeved with an adsorption ring sleeve (16), and a water level sensor (17) is arranged on one side of the adsorption ring sleeve (16).

3. A water resource pollutant detection device according to claim 1, characterized in that: The interior of the lifting tube (13) is provided with an anti-bending inner core (18), and the inner wall of the anti-bending inner core (18) is provided with a water flowing inner tube (19).

4. A water resource pollutant detection device according to claim 1, characterized in that: A retractable turntable (20) is provided at the inner center of the floating frame (11), and a first communication port (21) is provided at the inner center of the inner wall of the retractable turntable (20).

5. A water resource pollutant detection device according to claim 4, characterized in that: The upper and lower ends of the retractable turntable (20) are sleeved with rotating gear rings (22), one side of the inner wall of the floating frame (11) is provided with a driving gear roller (23), the top end of the driving gear roller (23) is provided with a driving motor (24), and the side of the floating frame (11) is provided with a floating airbag (25).

6. A water resource pollutant detection device according to claim 1, characterized in that: The four sides of the annular shrinkable rubber cover (9) are fixedly connected to a docking seat (26), the upper and lower ends of the docking seat (26) are fixedly connected to a limit slider (27), the side of the docking seat (26) is provided with an ejection air bag (28), and the four sides of the side of the central water storage tank (2) are provided with drainage side grooves (29).

7. A water resource pollutant detection device according to claim 1, characterized in that: The upper cover frame (1) and the lower cover frame (3) are fixedly connected to the four sides of the upper and lower surfaces with a mounting sleeve (30), an equipment socket (31) is arranged inside the mounting sleeve (30), a detection unit body (32) is arranged between the upper and lower equipment sockets (31), a water distribution cover (33) is fixedly connected between the upper and lower mounting sleeves (30), and a water guide frame (34) is fixedly connected to the side of the water distribution cover (33).

8. A water resource pollutant detection device according to claim 1, characterized in that: A second communication port (35) is provided at the inner center of the upper limit seat (6), and limit slide rails (36) are provided on four sides of the second communication port (35). A detection liner (37) is provided on the inner wall of the detection tank (5), and a water distribution trough (38) is provided inside the diversion rack (4).

9. A water resource pollutant detection device according to claim 1, characterized in that: An air control pump (39) is arranged at the center of the surface of the upper cover frame (1), and a transmission antenna (40) is arranged on the top of the air control pump (39).

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