Water level sensor for fire pool

Abstract

The water level sensor comprises the fire pool, a rectangular groove is formed in the fire pool, a transparent plate is arranged in the rectangular groove, a reflecting plate is arranged on the inner side wall of the fire pool, two installation plates are arranged on the outer side wall of the fire pool, a transmission rod is arranged between the two installation plates, and a transmission block is arranged on the transmission rod in a sleeved mode. An infrared reflection sensor is arranged on the transmission block, the infrared reflection sensor is matched with the transparent plate and the reflecting plate, and a transmission assembly for driving the transmission rod to rotate is arranged on the mounting plate; according to the utility model, the infrared laser emitted by the infrared reflection sensor passes through the transparent plate and is contacted with the reflecting plate after passing through the fire-fighting pool, the infrared laser is reflected back into the infrared reflection sensor by the reflecting plate, and the infrared reflection sensor cannot receive the reflected infrared laser due to the interference of water, so that the infrared laser can be reflected by the fire-fighting pool. Whether water exists in the fire-fighting pool at the height where the infrared reflection sensor is located can be distinguished, and the water level height in the fire-fighting pool can be visually detected.

Description

Technical Field

[0001] The utility model relates to the field of fire-fighting equipment, in particular to a water level sensor for a fire-fighting pool. Background Art

[0002] A fire water tank is a specially built water storage facility designed to provide water for fixed or mobile fire pumps. Fire water tanks are usually used in situations where the municipal water supply network or household inlet pipes cannot meet the design flow requirements of fire water supply inside and outside the building, such as when there is only one household pipe, the design flow of the outdoor fire hydrant exceeds 20 liters / second, the building height exceeds 50 meters, or the municipal fire water supply design flow is insufficient; in these cases, a fire water tank must be set up to ensure that the fire water demand is met.

[0003] The existing water level sensors for fire pools generally place floating objects in the fire pool to objectively observe the water level in the fire pool at that time. However, this detection method is prone to the phenomenon of floating objects getting stuck due to rust or accumulation of impurities during long-term use, and thus the water level sensor cannot detect the water level of the fire pool, affecting the accuracy of the water level detection of the fire pool. Therefore, a water level sensor for fire pools is proposed to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a water level sensor for a fire pool in response to the above-mentioned problems. The utility model transmits an infrared laser through a transparent plate through an infrared reflection sensor, and contacts a reflective plate after passing through the fire pool. The infrared laser is then reflected back to the infrared reflection sensor through the reflective plate. Due to the interference of water, the infrared reflection sensor cannot receive the reflected infrared laser. In this way, it can be distinguished whether there is water in the fire pool at the height of the infrared reflection sensor at this time, and the water level in the fire pool can be detected more intuitively. In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0005] According to one aspect of the utility model, a water level sensor for a fire pool is provided, comprising a fire pool, an overflow pipe is provided above the side wall of the fire pool, a rectangular groove is opened in the middle of the side of the fire pool close to the overflow pipe, a transparent plate is provided in the rectangular groove, a reflective plate is provided on the inner wall of the fire pool away from the transparent plate, and the transparent plate and the reflective plate cooperate, two mounting plates are provided on the outer wall of the fire pool, the two mounting plates are arranged opposite to each other up and down, and the two mounting plates are located next to the transparent plate, a transmission rod is provided between the two mounting plates, and the two ends of the transmission rod are respectively connected to the two mounting plates through bearings, a transmission block is sleeved on the transmission rod, and an infrared reflection sensor is provided on the transmission block, the infrared reflection sensor cooperates with the transparent plate and the reflective plate, and a transmission component for driving the transmission rod to rotate is provided on the mounting plate.

[0006] Preferably, the transmission assembly includes a driving motor mounted on a mounting plate, the output shaft of the driving motor is connected to a transmission rod, the transmission rod is a reciprocating screw, two connecting rods are provided between the two mounting plates, two openings are provided on the transmission block to cooperate with the two connecting rods, and a reciprocating assembly is provided on the transmission block to drive the infrared reflection sensor to move back and forth laterally.

[0007] Preferably, the reciprocating assembly includes two support plates mounted on the transmission block, an electric push rod is commonly mounted on the two support plates, a T-shaped plate is mounted on the head of the electric push rod, the T-shaped plate is connected to the infrared reflection sensor, and the transverse plate of the T-shaped plate is parallel to the transparent plate.

[0008] Preferably, the transparent plate and the fire pool are of separate design, two slide grooves are symmetrically provided in the rectangular groove, two slide bars are symmetrically provided on the transparent plate, and a handle is provided on the top of the transparent plate.

[0009] Preferably, a bracket is provided on the top of the fire pool, and the bracket is located above the rectangular groove. A cross bar is provided on the side of the bracket close to the inside of the fire pool, and a scraper is installed on the cross bar through a spring hinge, and the scraper cooperates with the transparent plate.

[0010] Preferably, the scraper is inclined toward one side of the transparent plate, and the inclination angle is 10°-15°.

[0011] Preferably, there is a height difference between the left and right ends of the scraper, that is, the lower side of the scraper is an upward sloping bevel.

[0012] Preferably, a plurality of outward drainage holes are opened at the lower end of one side of the fire fighting pool close to the rectangular groove, and the plurality of drainage holes are evenly arranged laterally, and the plurality of drainage holes are all connected to the bottom of the rectangular groove.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. The water level sensor for a fire pool described in the utility model emits an infrared laser through a transparent plate through an infrared reflection sensor, and contacts a reflective plate after passing through the fire pool. The infrared laser is then reflected back to the infrared reflection sensor via the reflective plate. Due to the interference of water, the infrared reflection sensor cannot receive the reflected infrared laser. In this way, it can be distinguished whether there is water in the fire pool at the height of the infrared reflection sensor at this time, and the water level in the fire pool can be detected more intuitively. At the same time, the staff can manually adjust the infrared turn-over sensor to the lowest water level of the fire pool, and regularly turn on the infrared reflection sensor for detection.

[0015] 2. The water level sensor for a fire pool described in the utility model drives the transmission block to move up and down through the transmission assembly and the transmission rod, that is, drives the infrared reflection sensor to move up and down, so as to achieve the purpose of automatically detecting the water level of the fire pool and improve the convenience of the water level sensor in detecting the water level of the fire pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This utility model Figure 1 A magnified image of point A;

[0018] Figure 3 This utility model Figure 1 The enlarged view of point B;

[0019] Figure 4 This is a schematic diagram of the disassembly and assembly of the transparent plate of the utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view of point C;

[0021] In the attached drawings, 1. fire pool; 2. overflow pipe; 3. rectangular groove; 4. transparent plate; 5. reflective plate; 6. mounting plate; 7. transmission rod; 8. transmission block; 9. infrared reflection sensor; 10. drive motor; 11. connecting rod; 12. support plate; 13. electric push rod; 14. T-shaped plate; 15. slide groove; 16. slide bar; 17. handle; 18. bracket; 19. cross bar; 20. scraper; 21. drainage hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling readers to have a thorough understanding of one or more aspects of the utility model, and these aspects of the utility model can be realized even without these specific details.

[0023] See also Figures 1 to 5 The utility model provides a water level sensor for a fire water pool, and the technical solution is as follows:

[0024] It includes a fire pool 1, an overflow pipe 2 is provided on the upper side wall of the fire pool 1, a rectangular groove 3 is opened in the middle of the side of the fire pool 1 close to the overflow pipe 2, a transparent plate 4 is provided in the rectangular groove 3, a reflective plate 5 is provided on the inner wall of the fire pool 1 away from the transparent plate 4, and the transparent plate 4 and the reflective plate 5 cooperate, two mounting plates 6 are provided on the outer wall of the fire pool 1, the two mounting plates 6 are arranged opposite to each other up and down, and the two mounting plates 6 are located next to the transparent plate 4, a transmission rod 7 is provided between the two mounting plates 6, and the two ends of the transmission rod 7 are respectively connected to the two mounting plates 6 through bearings, a transmission block 8 is sleeved on the transmission rod 7, and an infrared reflection sensor 9 is provided on the transmission block 8, the infrared reflection sensor 9 cooperates with the transparent plate 4 and the reflective plate 5, and a transmission component for driving the transmission rod 7 to rotate is provided on the mounting plate 6.

[0025] Through the cooperation of the infrared reflection sensor 9 with the transparent plate 4 and the reflective plate 5, the infrared reflection sensor 9 emits an infrared laser that passes through the transparent plate 4, contacts the reflective plate 5 after passing through the fire pool 1, and the infrared laser is then reflected back to the infrared reflection sensor 9 via the reflective plate 5; since the irradiation distance of the infrared reflection sensor 9 in the air is a fixed value, and after being refracted by water, the distance increases, and the distances of different types of infrared reflection sensors 9 are different, the infrared reflection sensor 9 cannot receive the reflected infrared laser. In this way, it can be distinguished whether there is water in the fire pool 1 at the height of the infrared reflection sensor 9 at this time, and the water level in the fire pool 1 can be detected more intuitively; in this way, the staff can manually adjust the infrared turning sensor to the lowest water level of the fire pool 1, and regularly turn on the infrared reflection sensor 9 for detection;

[0026] The manual adjustment method is relatively simple and cannot accurately measure the water level height in the fire pool 1 at this time. The transmission assembly cooperates with the transmission rod 7 to drive the transmission block 8 to move up and down, that is, to drive the infrared reflection sensor 9 to move up and down, so as to achieve the purpose of automatically detecting the water level of the fire pool 1.

[0027] The transmission assembly includes a driving motor 10 installed on the mounting plate 6, the output shaft of the driving motor 10 is connected to the transmission rod 7, the transmission rod 7 is a reciprocating screw, two connecting rods 11 are arranged between the two mounting plates 6, and two openings are provided on the transmission block 8 to cooperate with the two connecting rods 11, and a reciprocating assembly for driving the infrared reflection sensor 9 to move back and forth laterally is provided on the transmission block 8; the infrared reflection sensor 9 starts to emit infrared light, and if the reflected light is received, the driving motor 10 is started, and the transmission block 8 is driven to move downward by rotating the transmission rod 7. During the process, the infrared reflection sensor 9 is continuously turned on until no reflected signal is received, and the driving motor 10 stops. At this time, the position of the transmission block 8 is the water level of the fire pool 1. A distance measuring sensor is provided at the lower end of the mounting plate 6 where the driving motor 10 is located, and the height data of the transmission block 8 at this time can be transmitted to the control background through the distance measuring sensor, so that the staff can monitor the water level of the fire pool 1 at this time through the background;

[0028] The lowest end that the transmission block 8 can move on the transmission rod 7 is set as the lowest water level of the fire pool 1. When the transmission block 8 moves to the lowest end, the infrared reflection sensor 9 can still receive the reflected laser, and then a warning signal is sent to the control background, indicating that the current water level in the fire pool 1 is lower than the lowest water level and water needs to be added. Since the transmission rod 7 is a reciprocating screw, the drive motor 10 does not need to be reversed, and the transmission block 8 can be moved upward to the top by continuously transmitting the forward direction for the next water level detection.

[0029] The reciprocating assembly includes two support plates 12 installed on the transmission block 8, and an electric push rod 13 is installed on the two support plates 12. A T-shaped plate 14 is installed at the head of the electric push rod 13. The T-shaped plate 14 is connected to the infrared reflection sensor 9, and the transverse plate of the T-shaped plate 14 is parallel to the transparent plate 4; the transparent plate 4 is soaked in water for a long time, and scale or impurities are easily hung on the transparent plate 4, and their existence is easy to block the infrared laser emitted by the infrared reflection sensor 9, and the accuracy of the detection of the infrared reflection sensor 9 cannot be guaranteed; on the same horizontal plane, the probability of scale or impurities completely occupying the entire transparent plate 4 is small, so the electric push rod 13 is set to drive the T-shaped plate 14 to move back and forth, that is, drive the infrared reflection sensor 9 to move back and forth in the transverse direction, thereby improving the fault tolerance of the infrared reflection sensor 9 and ensuring the detection stability and accuracy of the infrared reflection sensor 9.

[0030] The transparent plate 4 and the fire pool 1 are of separate design, two slide grooves 15 are symmetrically opened in the rectangular groove 3, two slide bars 16 are symmetrically arranged on the transparent plate 4, and a handle 17 is arranged on the top of the transparent plate 4; the end of the transparent plate 4 immersed in water is prone to scale and impurities, and needs to be cleaned regularly; cleaning the transparent plate 4 with a high-pressure water gun can easily affect the light transmittance of the transparent plate 4, so the transparent plate 4 is taken out of the rectangular groove 3 through the handle 17, and after deep cleaning and maintenance, the transparent plate 4 is installed into the rectangular groove 3, thereby ensuring the stability of the detection of the infrared reflection sensor 9.

[0031] A bracket 18 is provided on the top of the fire pool 1, and the bracket 18 is located above the rectangular groove 3. A cross bar 19 is provided on the side of the bracket 18 close to the inside of the fire pool 1, and a scraper 20 is installed on the cross bar 19 through a spring hinge, and the scraper 20 cooperates with the transparent plate 4; when the staff manually takes out the transparent plate 4, the scale or impurities attached to the transparent plate 4 will be initially cleaned by the scraper 20, thereby reducing the cleaning difficulty of the staff; and the scraper 20 is installed on the cross plate through a spring hinge, when the scraper 20 moves upward, the moving direction of the transparent plate 4 is opposite to the rotation direction of the spring hinge, then the scraper 20 can contact with the transparent plate 4 to scrape off the scale and impurities, conversely, in the process of placing the transparent plate 4 into the rectangular groove 3, the transparent plate 4 moves downward, which is consistent with the rotation direction of the spring hinge, then the scraper 20 will not interfere with the movement of the transparent plate 4, thereby improving the convenience of disassembly and assembly of the transparent plate 4.

[0032] The scraper 20 is inclined toward one side of the transparent plate 4, and the inclination angle is 10°-15°; the inclined scraper 20 can better contact the transparent plate 4 and more conveniently scrape off scale or impurities. Although there is a limitation of the spring hinge, the inclination angle should not be too large to avoid interfering with the disassembly and assembly process of the transparent plate 4. The inclination angle of 10°-15° is a more suitable range.

[0033] There is a height difference between the left and right ends of the scraper 20, that is, the lower side of the scraper 20 is an upward slanted bevel; the upward slanted scraper 20 design can reduce the possibility of scraped scale or impurities remaining on the scraper 20, avoid blade clogging, and reduce the frequency of cleaning and maintenance.

[0034] A plurality of drainage holes 21 are provided at the lower end of the fire pool 1 on one side close to the rectangular groove 3, and the plurality of drainage holes 21 are evenly arranged horizontally, and the plurality of drainage holes 21 are all connected with the bottom of the rectangular groove 3; when disassembling and assembling the transparent plate 4, it is inevitable that a small amount of water will enter the rectangular groove 3. After taking out the transparent plate 4, through the plurality of drainage holes 21, without the restriction of the transparent plate 4, the water accumulated in the rectangular groove 3 can be discharged out of the rectangular groove 3 through the plurality of drainage holes 21, avoiding remaining in the rectangular groove 3, which will affect the light transmittance of the transparent plate 4 in the long run.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A water level sensor for a fire pool, characterized in that: include: A fire pool (1), wherein an overflow pipe (2) is provided above the side wall of the fire pool (1), a rectangular groove (3) is provided in the middle of a side of the fire pool (1) close to the overflow pipe (2), a transparent plate (4) is provided in the rectangular groove (3), a reflective plate (5) is provided on the inner side wall of the fire pool (1) away from the transparent plate (4), and the transparent plate (4) and the reflective plate (5) cooperate, and two mounting plates (6) are provided on the outer side wall of the fire pool (1), and the two mounting plates (6) are arranged opposite to each other up and down, The two mounting plates (6) are located beside the transparent plate (4), a transmission rod (7) is provided between the two mounting plates (6), and the two ends of the transmission rod (7) are respectively connected to the two mounting plates (6) through bearings, a transmission block (8) is sleeved on the transmission rod (7), and an infrared reflection sensor (9) is provided on the transmission block (8), the infrared reflection sensor (9) cooperates with the transparent plate (4) and the reflection plate (5), and a transmission component for driving the transmission rod (7) to rotate is provided on the mounting plate (6).

2. A water level sensor for a fire pool according to claim 1, characterized in that: The transmission assembly comprises a driving motor (10) mounted on a mounting plate (6), the output shaft of the driving motor (10) being connected to a transmission rod (7), the transmission rod (7) being a reciprocating screw rod, two connecting rods (11) being arranged between the two mounting plates (6), the transmission block (8) being provided with two openings cooperating with the two connecting rods (11), and the transmission block (8) being provided with a reciprocating assembly for driving the infrared reflection sensor (9) to move back and forth laterally.

3. A water level sensor for a fire pool according to claim 2, characterized in that: The reciprocating assembly comprises two support plates (12) mounted on a transmission block (8), an electric push rod (13) being mounted on the two support plates (12), a T-shaped plate (14) being mounted on the head of the electric push rod (13), the T-shaped plate (14) being connected to an infrared reflection sensor (9), and a transverse plate of the T-shaped plate (14) being parallel to the transparent plate (4).

4. A water level sensor for a fire pool according to claim 1, characterized in that: The transparent plate (4) and the fire pool (1) are of separate design, two slide grooves (15) are symmetrically provided in the rectangular groove (3), two slide bars (16) are symmetrically provided on the transparent plate (4), and a handle (17) is provided on the top of the transparent plate (4).

5. A water level sensor for a fire pool according to claim 4, characterized in that: A bracket (18) is provided on the top of the fire pool (1), and the bracket (18) is located above the rectangular groove (3). A cross bar (19) is provided on one side of the bracket (18) close to the inside of the fire pool (1), and a scraper (20) is installed on the cross bar (19) through a spring hinge, and the scraper (20) cooperates with the transparent plate (4).

6. A water level sensor for a fire pool according to claim 5, characterized in that: The scraper (20) is inclined toward one side of the transparent plate (4), and the inclination angle is 10°-15°.

7. A water level sensor for a fire pool according to claim 6, characterized in that: There is a height difference between the left and right ends of the scraper (20), that is, the lower side of the scraper (20) is an upward sloping side.

8. A water level sensor for a fire pool according to claim 4, characterized in that: A plurality of outwardly facing drainage holes (21) are provided at the lower end of one side of the fire fighting pool (1) close to the rectangular groove (3), and the plurality of drainage holes (21) are evenly arranged laterally, and the plurality of drainage holes (21) are all connected to the bottom of the rectangular groove (3).

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