Floating ball valve of cooling tower

Abstract

The utility model discloses a floating ball valve of a cooling tower, which comprises a valve body, a water inlet arranged on one side of the valve body, a water outlet arranged at the bottom of the valve body, a floating ball rod arranged on one side of the valve body, a floating ball fixedly connected with the tail end of the floating ball rod, and a sewage disposal device arranged inside the water outlet. The adjusting device is arranged at one end of the floating ball rod away from the floating ball. The utility model relates to the technical field of floating ball valves, and the floating ball valve of the cooling tower realizes the automatic cleaning of the inner wall of the floating ball valve while water enters through the matching of a vertical rod, a scraping plate, a fixed seat, a fixed rod and a turbine, and solves the problems that some dirt is possibly attached to the inner wall of a floating ball valve of a traditional cooling tower after long-time use, and the inner wall of the floating ball valve is not easy to clean after a large amount of dirt is accumulated. The water outlet of the floating ball valve can not discharge water according to the normal water yield, so that the water storage time is prolonged, and the cooling progress of the cooling tower is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of float ball valve, concretely is the float ball valve of cooling tower. BACKGROUND

[0002] The float ball valve is composed of curved arm and float ball and can be used to automatically control the liquid level of water tower or pool.

[0003] When the float ball valve of the traditional cooling tower is used, the staff installs the float ball valve in the inside of the cooling tower to control the liquid level.

[0004] However, after long time use, the inner wall of the float ball valve of the traditional cooling tower may be attached with some dirt, and when a large amount of dirt is accumulated, the water outlet of the float ball valve may not discharge water according to the normal water discharge amount, which increases the water storage time and affects the cooling progress of the cooling tower. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides the float ball valve of cooling tower, solves the problem that the inner wall of the float ball valve of the traditional cooling tower may be attached with some dirt after long time use, and when a large amount of dirt is accumulated, the water outlet of the float ball valve may not discharge water according to the normal water discharge amount, which increases the water storage time and affects the cooling progress of the cooling tower.

[0006] To achieve the above object, the utility model is realized by the following technical scheme: the float ball valve of cooling tower, including the valve body, the one side of valve body is provided with the water inlet, the bottom of valve body is provided with the water outlet, the one side of valve body is provided with the float ball rod, the tail end of float ball rod is fixedly connected with the float ball, the float ball valve of cooling tower still includes the dirt cleaning device, and the dirt cleaning device is arranged in the inside of water outlet;Adjusting device is arranged at the one end of float ball rod away from the float ball;The dirt preventing device is arranged in the inside of water inlet;Among them, the inner wall of water outlet is cleaned through the dirt cleaning device, the distance between float ball and valve body is adjusted through adjusting device, and the inner wall of water inlet is prevented from being polluted through the dirt preventing device.

[0007] Preferably, the dirt cleaning device includes a vertical rod, the vertical rod is inserted into the inner wall of the water outlet, a scraper is fixedly connected to the outer wall of the vertical rod, a fixed seat is sleeved on the outer wall of the vertical rod and is fixedly connected to the bottom of the valve body, a fixed rod is rotatably connected to the outer wall of the vertical rod through a waterproof sealing bearing and is fixedly connected to the inner wall of the fixed seat, and a turbine is fixedly connected to the tail end of the vertical rod, wherein the cooperation of the vertical rod, the scraper, the fixed seat, the fixed rod and the turbine automatically cleans the inner wall of the water outlet while discharging water.

[0008] Preferably, a valve core is arranged in the inside of the valve body, a moving rod is fixedly connected to the side of the outer wall of the valve core away from the water inlet, the outer wall of the moving rod is inserted into the side of the outer wall of the valve body away from the water inlet and extends to the outside of the valve body.

[0009] Preferably, the outer wall of the valve body is provided with a connecting rod away from the water inlet, the front of the connecting rod is provided with a through groove, the through groove is movably connected with the end of the moving rod away from the valve core, the outer wall of the connecting rod is rotatably connected with a rotating seat through a pin shaft, and the rotating seat is located below the through groove.

[0010] Preferably, the adjusting device comprises an adjusting rod fixedly connected to the outer wall of the support seat away from the valve body, an adjusting groove arranged in the adjusting rod, six threaded holes arranged on the outer wall of the floating ball rod, and two bolts respectively penetrating the outer wall of the adjusting rod and threadedly connected to the inner wall of the threaded holes.

[0011] Preferably, the anti-fouling device comprises an anti-fouling pipe inserted into the inner wall of the water inlet and a connecting seat fixedly connected to the outer wall of the water inlet.

[0012] Beneficial effects

[0013] The cooling tower floating ball valve has the following beneficial effects: through the cooperation of the vertical rod, the scraper, the fixing seat, the fixing rod and the turbine, the inner wall of the floating ball valve can be automatically cleaned while water is flowing in, and the problem that after long-time use, the inner wall of the floating ball valve of the traditional cooling tower may be attached with some dirt, the water outlet of the floating ball valve may not be able to flow water according to the normal water flow when a large amount of dirt is accumulated, the water storage time is increased, and the cooling progress of the cooling tower is affected is solved.

[0014] Through the cooperation of the adjusting rod, the adjusting groove, the threaded hole and the bolt, the length of the floating ball rod is adjusted, and the problem that in actual use, the length of the floating ball rod of the traditional cooling tower floating ball valve is not easy to adjust, the traditional cooling tower floating ball valve may not meet the use requirement when facing different working conditions, the entire floating ball valve may need to be replaced, and the use cost is increased is solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is an appearance schematic view of the utility model;

[0017] Figure 3 It is Figure 1 It is a structural schematic view of the vertical rod, the scraper and the fixing seat;

[0018] Figure 4 It is Figure 1Structure schematic view of adjusting rod, adjusting groove and threaded hole;

[0019] Figure 5 For Figure 1 Structure schematic view of water inlet, sealing seat and connecting seat.

[0020] In the figure: 1, valve body; 11, water inlet; 12, water outlet; 2, valve core; 21, moving rod; 3, float rod; 31, float ball; 4, cleaning device; 41, vertical rod; 42, scraper; 43, fixed seat; 44, fixed rod; 45, turbine; 5, connecting rod; 51, through groove; 52, rotating seat; 53, support seat; 6, adjusting device; 61, adjusting rod; 62, adjusting groove; 63, threaded hole; 64, bolt; 7, anti-pollution device; 71, anti-pollution pipe; 72, connecting seat. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] After long-term use, the inner wall of the traditional cooling tower float ball valve may be attached with some dirt, and when a large amount of dirt accumulates, the water outlet of the float ball valve may not be able to discharge water at the normal water discharge rate, resulting in an increase in water storage time, thereby affecting the cooling progress of the cooling tower.

[0023] Therefore, the present application provides a cooling tower float ball valve, which solves the problem that after long-term use, the inner wall of the traditional cooling tower float ball valve may be attached with some dirt, and when a large amount of dirt accumulates, the water outlet of the float ball valve may not be able to discharge water at the normal water discharge rate, resulting in an increase in water storage time, thereby affecting the cooling progress of the cooling tower.

[0024] Through the personnel in the art, the parts in the case are connected in sequence, and the specific connection and operation sequence should be referred to the following working principle, and the detailed connection means is the public technical knowledge in the art, and the following mainly introduces the working principle and process.

[0025] Embodiment one: by Figures 1-5It can be known that the float ball valve of the cooling tower comprises a valve body 1, a water inlet 11 arranged on one side of the valve body 1, a water outlet 12 arranged at the bottom of the valve body 1, a float ball rod 3 arranged on one side of the valve body 1, and a float ball 31 fixedly connected to the end of the float ball rod 3, and further comprises a decontamination device 4, an adjusting device 6 and an anti-pollution device 7, wherein the decontamination device 4 is arranged inside the water outlet 12, the adjusting device 6 is arranged at the end of the float ball rod 3 away from the float ball 31, and the anti-pollution device 7 is arranged inside the water inlet 11; wherein the inner wall of the water outlet 12 is cleaned by the decontamination device 4, the distance between the float ball 31 and the valve body 1 is adjusted by the adjusting device 6, and the inner wall of the water inlet 11 is subjected to anti-pollution treatment by the anti-pollution device 7.

[0026] In the specific implementation process, it is particularly worth pointing out that the valve body 1 is in the shape of a whole 'T', the valve body 1 can be made of copper alloy, the outer wall of the valve body 1 is provided with a circular ring for increasing the contact area, one side is provided with the water inlet 11, the outer wall of the circular ring is provided with a sealing gasket on the side close to the water inlet 11, in the installation process, the side of the valve body 1 close to the water inlet 11 extends from the inside to the outside of the cooling tower, at this time, the sealing gasket is in contact with the inner wall of the cooling tower, thereby improving the sealing performance between the valve body 1 and the cooling tower, and the outer wall of the side of the valve body 1 close to the water inlet 11 is provided with threads, the other side is provided with a through hole, the inner wall of the through hole is fixedly connected with a sealing ring, the float ball rod 3 is in the shape of a cylindrical rod and can be made of stainless steel, the float ball 31 is in the shape of a ball and is provided with a hollow inside, and can be a hollow stainless steel ball, which has good strength and corrosion resistance and is suitable for harsh working environments, when the float ball valve is used by the worker, the position of the water outlet 12 of the inner wall of the valve body 1 is cleaned by the decontamination device 4, when facing different working conditions, the length of the float ball rod 3 is adjusted by the adjusting device 6, and the position of the water inlet 11 of the inner wall of the valve body 1 is subjected to anti-pollution treatment by the anti-pollution device 7.

[0027] Further, the decontamination device 4 comprises a vertical rod 41, a scraper 42, a fixing seat 43, a fixing rod 44 and a turbine 45, the vertical rod 41 is inserted into the inner wall of the water outlet 12, the scraper 42 is fixedly connected to the outer wall of the vertical rod 41, the fixing seat 43 is sleeved on the outer wall of the vertical rod 41 and is fixedly connected to the bottom of the valve body 1, the fixing rod 44 is rotatably connected to the outer wall of the vertical rod 41 through a waterproof sealing bearing and is fixedly connected to the inner wall of the fixing seat 43, and the turbine 45 is fixedly connected to the end of the vertical rod 41; wherein the vertical rod 41, the scraper 42, the fixing seat 43, the fixing rod 44 and the turbine 45 are cooperated to automatically clean the inner wall of the water outlet 12 while water is discharged.

[0028] In the implementation process, it is particularly worth pointing out that the vertical rod 41 is a cylindrical rod structure, which can be made of stainless steel. It can be understood that the diameter of the vertical rod 41 is reasonably designed according to the size of the water outlet, which can not only ensure sufficient strength to support the scraper 42, but also not affect the normal passage of water flow. The scraper 42 is a rectangular plate as a whole, which can be made of rubber or polyurethane material with certain elasticity and wear resistance. It can be understood that the edge of the scraper 42 is specially treated, which can effectively scrape off the dirt on the inner wall of the water outlet 12 without damaging the inner wall. The fixing seat 43 is a disc as a whole, which is larger in diameter than the diameter of the water outlet 12. The top is provided with a flange, which is fixedly connected with the bottom of the valve body 1 through screws, which is convenient for replacing the whole cleaning device 4. The fixing rod 44 is made of stainless steel, and its diameter and length are designed according to the actual installation space and mechanical requirements. The fixing rod 44 is provided with two, which are fixedly connected to the outer wall of the waterproof sealing bearing on both sides, which supports the vertical rod 41. The turbine 45 can be made of engineering plastic. The shape, number and angle of the turbine 45 are carefully designed to ensure that it can rotate efficiently under the impact of water flow. In actual use, when water flows out of the water outlet 12, it impacts the blades of the turbine 45, driving the vertical rod 41 and the scraper 42 to rotate together, thereby realizing automatic cleaning of the inner wall of the water outlet 12 and improving the service life of the floating ball valve of the cooling tower.

[0029] Further, the valve body 1 is provided with a valve core 2. The outer wall of the valve core 2 is fixedly connected with a moving rod 21 away from the water inlet 11. The outer wall of the moving rod 21 is inserted with the outer wall of the valve body 1 away from the water inlet 11, and extends to the outside of the valve body 1.

[0030] In the implementation process, it is particularly worth pointing out that the valve core 2 is made of high-strength corrosion-resistant stainless steel, and its shape is designed as a columnar structure that is matched with the inner wall of the valve body 1 to ensure good sealing performance. The outer wall of the valve core 2 is fixedly connected with a sealing plug near the water inlet 11 to increase the sealing performance of the valve core 2. The diameter and length of the moving rod 21 are designed according to the actual mechanical requirements and installation space, and its material can be selected as the same stainless steel as the valve core 2. The end of the moving rod 21 is provided with a groove, and a cylindrical slider is arranged in the groove. Through the cooperation of the valve core 2 and the moving rod 21, the sealing performance and working stability of the floating ball valve of the cooling tower are ensured.

[0031] Specifically, when the water inside the cooling tower needs to be supplemented, the staff connects the water inlet 11 of the valve body 1 with the external water source to make the external water source flow into the inside of the valve body 1. When the water inside the cooling tower is insufficient to meet the normal operation, the floating ball 31 is affected by its own gravity and moves downward with the lowering water surface, thereby driving the floating ball rod 3 to move. The floating ball rod 3 drives the moving rod 21 to move away from the water inlet 11. The moving rod 21 drives the valve core 2 to move away from the water inlet 11. When the outer wall of the valve core 2 is away from the top of the water outlet 12, the external water source enters the water outlet 12 of the inner wall of the valve body 1, enters the inside of the fixed seat 43 through the water outlet 12, and then contacts the turbine 45 through the fixed seat 43. The turbine 45 is affected by the water flow impact and starts to rotate. The turbine 45 drives the vertical rod 41 to rotate, and the vertical rod 41 drives the scraper 42 to make a circular motion. The scraper 42 cleans the water outlet 12 of the inner wall of the valve body 1. When the water inside the cooling tower gradually increases, the floating ball 31 moves with the rising water surface inside the cooling tower. Through the cooperation of the floating ball valve 31 and the moving rod 21, the valve core 2 gradually moves to the side of the clamping water inlet 11, gradually blocks the water outlet 12, and until completely closes the water outlet 12. At this time, the water inside the cooling tower is supplemented, and the turbine 45, the vertical rod 41 and the scraper 42 stop moving, and the cleaning action automatically stops.

[0032] Example two: by Figures 1-5 It can be seen that the side of the outer wall of the valve body 1 away from the water inlet 11 is provided with a connecting rod 5. The front surface of the connecting rod 5 is provided with a through groove 51. The through groove 51 is movably connected with the end of the moving rod 21 away from the valve core 2. The outer wall of the connecting rod 5 is rotatably connected with a rotating seat 52 through a pin shaft. The rotating seat 52 is located below the through groove 51. The outer wall of the rotating seat 52 away from the connecting rod 5 is fixedly connected with the outer wall of the valve body 1. The bottom of the connecting rod 5 is fixedly connected with a supporting seat 53.

[0033] In the specific implementation process, it is particularly worth pointing out that the connecting rod 5 is made of stainless steel. The length and width of the through groove 51 are designed according to the size of the cylindrical block at the end of the moving rod 21, which is slightly larger than the diameter and length of the cylindrical block, so that the cylindrical block can freely move in the through groove 51. The material of the rotating seat 52 can be selected as the same stainless steel as the connecting rod 5. The end close to the connecting rod 5 is provided with an adapter block with a driving pin shaft. The connecting rod 5 is rotated through the pin shaft on the adapter block and serves as a fixed support for the connecting rod 5. The supporting seat 53 is made of the same material as the valve body 1. Its shape is designed as a block that is adapted to the bottom of the connecting rod 5, which is used to provide stable support for the connecting rod 5. The above-mentioned components need to be regularly maintained to ensure that the movement is not obviously blocked. The staff realizes the improvement of the structural stability of the floating ball valve of the cooling tower through the cooperation of the connecting rod 5, the through groove 51, the rotating seat 52 and the supporting seat 53.

[0034] Further, the adjusting device 6 comprises an adjusting rod 61, an adjusting groove 62, threaded holes 63 and bolts 64, the adjusting rod 61 is fixedly connected to the outer wall of the supporting seat 53 away from the valve body 1, the adjusting groove 62 is arranged in the interior of the adjusting rod 61, the threaded holes 63 are six and are arranged on the outer wall of the floating ball rod 3, and the bolts 64 are two and respectively penetrate the outer wall of the adjusting rod 61 and are threadedly connected to the inner wall of the threaded holes 63, wherein the distance between the floating ball 31 and the valve body 1 is changed through cooperation of the adjusting rod 61, the adjusting groove 62, the threaded holes 63 and the bolts 64.

[0035] In the specific implementation process, it is worth pointing out that the adjusting rod 61 is made of the same stainless steel material as the floating ball rod 3, the length thereof is designed according to the actual installation space and the adjusting requirement, the through holes are arranged on the top and the bottom of the end close to the floating ball 31, the adjusting groove 62 is long strip-shaped, the diameter thereof is designed according to the floating ball rod 3 and is slightly larger than the diameter of the floating ball rod 3, and the inner wall is smooth to ensure that the floating ball rod 3 can freely move in the adjusting groove 62, the threaded holes 63 are six in total, the interval thereof is determined according to the actual adjusting precision requirement, the diameter and the pitch are of the standard specification to facilitate cooperation with the bolts 64, the bolts 64 are two and can be selected as the external hexagonal bolts 64 made of stainless steel, the floating ball rod 3 can be fixed at different positions in the adjusting groove 62 by tightening or loosening the bolts 64, the distance between the floating ball 31 and the valve body 1 can be adjusted in the face of various working conditions such as different environmental temperatures and cooling loads, so that the floating ball valve can better adapt to these changes, and it can be understood that the components of the adjusting device 6 need to be regularly maintained to ensure that the movement is not obviously blocked, thereby improving the use range of the floating ball valve of the cooling tower.

[0036] Further, the anti-fouling device 7 comprises an anti-fouling pipe 71 and a connecting seat 72, the anti-fouling pipe 71 is inserted into the inner wall of the water inlet 11, and the connecting seat 72 is fixedly connected to the outer wall of the water inlet 11, wherein the inner wall of the water inlet 11 is prevented from being fouled through cooperation of the anti-fouling pipe 71 and the connecting seat 72.

[0037] In the implementation process, it is particularly worth pointing out that the inner wall of the anti-fouling pipe 71 can be provided with an anti-fouling material, which can be PVC or PTFE material with a nano coating treatment on the surface. The inner wall of the anti-fouling pipe 71 can also be provided with a filter screen to filter impurities in the water, thereby improving the service life of the anti-fouling pipe 71. The outer wall of the anti-fouling pipe 71 contacts the water inlet 11 of the inner wall of the valve body 1, and a sealing ring is arranged between the two to increase the sealing performance and reduce the erosion of the inner wall of the valve body 1 by water. The material of the connecting seat 72 is the same as that of the valve body 1, and a flange is arranged on the side away from the valve body 1 to facilitate connection with other external pipelines. A circular ring is also arranged on the side close to the outer wall of the valve body 1, which is attached to the outer wall of the cooling tower. A sealing gasket is also arranged on the side of the circular ring attached to the cooling tower. It can be understood that the shapes of the two circular rings can be designed according to actual needs to ensure the sealing performance between the two and the inner and outer walls of the cooling tower. The inner wall of the connecting seat 72 is provided with threads that cooperate with the threads on the outer wall of the valve body 1 to fix the anti-fouling pipe 71 between the connecting seat 72 and the water inlet 11 of the valve body 1. A sealing ring is also arranged between the anti-fouling pipe 71 and the inner wall of the connecting seat 72 to ensure the sealing performance between the two. When the anti-fouling pipe 71 needs to be replaced, the old anti-fouling pipe 71 can be removed by the threaded structure between the valve body 1 and the connecting seat 72, and a new one can be installed. Regular maintenance is required between the connecting seat 72 and the valve body 1 to ensure that it does not rust. Through the cooperation of the anti-fouling pipe 71 and the connecting seat 72, the service life of the float ball valve of the cooling tower is further improved.

[0038] Specifically, when the distance between the float ball 31 and the valve body 1 needs to be changed, the worker enters the inside of the cooling tower and uses a tool to rotate the bolts 64 at the top and bottom of the adjusting rod 61 clockwise to make the bolts 64 away from the threaded holes 63. At this time, the worker holds the float ball rod 3 and pulls it to one side of the float ball 31 to increase the length of the float ball rod 3 exposed outside. After pulling out the appropriate length, the other threaded holes 63 on the float ball rod 3 correspond to the through holes at the top and bottom of the adjusting rod 61 one by one. The bolts 64 are rotated counterclockwise again to fix the float ball rod 3. At this time, the adjustment of the float ball rod 3 is complete. When the float ball 31 moves, it drives the float ball rod 3 to move, which in turn drives the adjusting rod 61 to move, the support seat 53 to move, the connecting rod 5 to move, the moving rod 21 to move through the rotating seat 52, and the valve core 2 to move through the through slot 51, thereby automatically opening and closing the float ball valve according to the movement of the float ball 31. When the anti-fouling pipe 71 needs to be replaced, the connecting seat 72 is rotated clockwise to remove it. At this time, the anti-fouling pipe 71 is exposed outside, and the old anti-fouling pipe 71 is removed from the inside of the valve body 1 and replaced with a new one. The connecting seat 72 is re-operated in the reverse direction to be fixed to the outer wall of the valve body 1. At this time, the replacement operation is complete.

[0039] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A float valve for cooling towers comprising a valve body (1) characterised in that: One side of the valve body (1) is provided with a water inlet (11), the bottom of the valve body (1) is provided with a water outlet (12), one side of the valve body (1) is provided with a float rod (3), the end of the float rod (3) is fixedly connected with a float ball (31), the float ball valve of the cooling tower further comprises: The cleaning device (4) is arranged in the water outlet (12); The adjusting device (6) is arranged at one end of the float rod (3) away from the float ball (31); The anti-fouling device (7) is arranged in the water inlet (11); Wherein, the inner wall of the water outlet (12) is cleaned by the cleaning device (4), the distance between the float ball (31) and the valve body (1) is adjusted by the adjusting device (6), and the inner wall of the water inlet (11) is treated by the anti-fouling device (7).

2. A float valve for cooling towers according to claim 1, characterized in that: The cleaning device (4) comprises: The vertical rod (41) is inserted into the inner wall of the water outlet (12); The scraper (42) is fixedly connected to the outer wall of the vertical rod (41); The fixed seat (43) is sleeved on the outer wall of the vertical rod (41) and is fixedly connected to the bottom of the valve body (1); The fixed rod (44) is rotatably connected to the outer wall of the vertical rod (41) through a waterproof sealing bearing and is fixedly connected to the inner wall of the fixed seat (43); The turbine (45) is fixedly connected to the end of the vertical rod (41); Wherein, the vertical rod (41), the scraper (42), the fixed seat (43), the fixed rod (44) and the turbine (45) cooperate to automatically clean the inner wall of the water outlet (12) while the water outlet (12) is discharging water.

3. The float and ball valve for cooling towers according to claim 1, characterized in that: The valve body (1) is provided with a valve core (2) inside, the outer wall of the valve core (2) is fixedly connected with a moving rod (21) away from the water inlet (11), the outer wall of the moving rod (21) is inserted into the outer wall of the valve body (1) away from the water inlet (11), and extends to the outside of the valve body (1).

4. The float and ball valve for cooling towers according to claim 3, characterized in that: The outer wall of the valve body (1) is provided with a connecting rod (5) away from the water inlet (11), the front surface of the connecting rod (5) is provided with a through groove (51), the through groove (51) is movably connected with the end of the moving rod (21) away from the valve core (2), the outer wall of the connecting rod (5) is rotatably connected with a rotating seat (52) through a pin shaft, and the rotating seat (52) is located below the through groove (51), the outer wall of the rotating seat (52) is fixedly connected to the outer wall of the valve body (1) away from the connecting rod (5), and the bottom of the connecting rod (5) is fixedly connected with a supporting seat (53).

5. A float valve for cooling towers as defined in claim 4, characterized in that: The adjusting device (6) comprises: The adjusting rod (61) is fixedly connected to the outer wall of the supporting seat (53) away from the valve body (1); The adjusting groove (62) is arranged in the adjusting rod (61); Six threaded holes (63) are arranged on the outer wall of the float rod (3); Two bolts (64) are arranged, respectively penetrating the outer wall of the adjusting rod (61), and threadedly connected to the inner wall of the threaded hole (63); Wherein, the distance between the float rod (3) and the valve body (1) is changed by the cooperation of the adjusting rod (61), the adjusting groove (62), the threaded hole (63) and the bolt (64).

6. A float and ball valve for cooling towers as defined in claim 5, characterized in that: The anti-fouling device (7) comprises: The anti-fouling pipe (71) is inserted into the inner wall of the water inlet (11); The connecting seat (72) is fixedly connected to the outer wall of the water inlet (11); Wherein, through the cooperation of the anti-fouling pipe (71) and the connecting seat (72), the inner wall of the water inlet (11) is prevented from being fouled.

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