Anti-freezing device for knife gate valve of sludge bin for sewage treatment

Abstract

The utility model relates to the technical field of sludge treatment, in particular to a sewage treatment sludge bin knife gate valve anti-freezing device which comprises a circulating water tank, an electric heating pipe, a circulating water pump and a heating pipe. The inner container is arranged in the circulating water tank, the electric heating pipe is arranged below the inner container and heats the inner container, temperature control is achieved through the temperature sensor, heated circulating water is conveyed to the position, above the knife gate valve, of the sludge outlet of the sludge bin through the circulating water pump, and freezing and freezing of the knife gate valve are effectively avoided by heating the sludge outlet of the sludge bin. The anti-freezing mud bin is simple in structure and convenient to use, the bin body at the mud outlet of the mud bin is heated through circulating water in the using process, then anti-freezing of the knife gate valve at the mud outlet is achieved, the anti-freezing mud bin is safer and more efficient, stable use of the knife gate valve is facilitated, and the service life of the knife gate valve is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to sludge treatment technical field, concretely relates to a sewage treatment mud bin knife gate valve anti -icing device. BACKGROUND

[0002] A large amount of sludge is produced in the process of sewage biological treatment, and the sludge is temporarily stored in a mud bin after pressure filtration treatment, waiting for further treatment or external transport, and entrusting further treatment; the existing sludge mud bin is generally large in size, and in actual plant layout, the bin body is often placed through a concrete floor, the mud outlet extends through the floor to the lower part of the floor, and the sludge in the mud bin can be discharged into a transport or transfer device by opening the knife gate valve at the mud outlet, so as to be further treated.

[0003] When the air temperature is low in winter, the sludge discharged from the front-end pressure filtration equipment has a certain temperature, so the sludge in the mud bin will not freeze when stored in the mud bin, but the knife gate valve exposed to the outside air will freeze, which will affect its normal opening and stable use of the knife gate valve, and since the knife gate valve is located high, it is not convenient to maintain and thaw in production and maintenance, which brings inconvenience to stable production.

[0004] Therefore, the utility model provides a sewage treatment mud bin knife gate valve anti -icing device, through the circulating water to the mud outlet above the knife gate valve heating, further realize the anti -icing of the knife gate valve, bring the convenience to the actual production. UTILITY MODEL CONTENTS

[0005] The utility model aims at the shortage of prior art, provides a sewage treatment mud bin knife gate valve anti -icing device to reach the purpose that the knife gate valve at the mud outlet of the mud bin is anti -icing when the air temperature is low in winter.

[0006] To achieve the above object, the utility model adopts the following technical scheme: a sewage treatment mud bin knife gate valve anti -icing device is set based on the knife gate valve at the mud outlet of the mud bin, including circulating water tank, the circulating water tank is provided with electric heating pipe, circulating water tank is connected with circulating water pump, circulating water pump is connected with the heating pipe at the mud outlet of the mud bin through water supply pipe, heating pipe is wound and arranged above the knife gate valve at the mud outlet, heating pipe is connected with return pipe, return pipe is connected with circulating water tank and forms a loop.

[0007] Further, the circulating water tank includes a box body, a box cover is detachably installed on the box body; an inner container is arranged in the box body, and the electric heating pipe is located below the bottom of the inner container.

[0008] Further, the inner container is provided with a temperature sensor, the temperature sensor is connected with a field PLC, and the PLC is connected with the electric heating pipe.

[0009] Further, the water supply pipe, the return pipe and the temperature sensor are sealingly connected with the inner container.

[0010] Further, sealing devices are arranged at the connection portions of the water supply pipe, the return pipe and the temperature sensor with the inner container, the sealing device comprises a first part and a second part, the first part comprises a first threaded connecting portion and a butt joint portion, the first threaded connecting portion is sealingly connected with a connecting port on the inner container, a recessed threaded connecting groove is arranged in the butt joint portion, and an elastic rubber ring is arranged in the threaded connecting groove, the second part comprises a second threaded connecting portion, and the second threaded connecting portion is matched with the threaded connecting groove; the water supply pipe, the return pipe and the probe rod of the temperature sensor are respectively arranged in the sealing device, and the elastic rubber ring is deformed and pressed on the probe rod of the water supply pipe, the return pipe or the temperature sensor in the tightening process of the second part.

[0011] Further, a support plate is arranged in the box, and a placing hole is arranged on the support plate, and the inner container is supported and placed through the placing hole.

[0012] Further, heat insulation cotton is arranged on the inner periphery of the water supply pipe, the heating pipe, the return pipe and the circulating water tank.

[0013] Further, Y-type filters are arranged on the water supply between the circulating water pump and the circulating water tank, one Y-type filter is arranged as a backup, and control valves are arranged on the front and back sides of the Y-type filter on each water supply branch.

[0014] The beneficial effects of the present application are as follows:

[0015] 1. The present application has simple structure, safe and reliable use, and can prevent the freezing of the knife gate valve of the mud discharge port in winter, thereby positively ensuring the stable use of the knife gate valve.

[0016] 2. The present application has low energy consumption, economic convenience, and is convenient to disassemble and maintain, thereby being convenient to use in actual production. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 is a schematic diagram of the internal structure of the circulating water tank of the present application;

[0019] Figure 3 is a schematic diagram of the pump front pipe connection of the circulating water pump of the present application;

[0020] Figure 4 is a schematic diagram of the structure of the sealing device of the present application.

[0021] The names corresponding to each mark in the diagram:

[0022] 1. Floor slab; 2. Mud bin; 21. Mud outlet; 22. Knife gate valve; 3. Antifreeze device; 31. Circulating water tank; 311. Tank body; 312. Tank cover; 313. Fastener; 314. Support plate; 315. Inner liner; 316. Heating element; 317. Temperature sensor; 32. Circulating water pump; 33. Water supply pipe; 331. Y-type filter; 332. Control valve; 34. Heating element; 35. Return water pipe; 4. Sealing device; 41. First part; 411. First threaded connection part; 412. Butt joint; 4121. Threaded connection groove; 42. Elastic rubber ring; 43. Second part; 431. Second threaded connection part. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0024] Embodiments of this utility model:

[0025] like Figures 1-4 As shown, in this embodiment, the antifreeze device 3 is used to prevent the sludge outlet 21 knife gate valve 22 of the sludge chamber 2 from freezing. The antifreeze device 3 includes a circulating water tank 31, which is placed on the floor slab 1. The circulating water tank 31 includes a tank body 311 and a tank cover 312. The tank body 311 and the tank cover 312 are detachably connected by a buckle 313. A support plate 314 is provided in the tank body 311, and an inner tank 315 is placed under the support plate 314. Circulating water is contained in the inner tank 315. An electric heating tube 316 is provided at the bottom of the inner tank 315 to heat the circulating water in the inner tank 315. A temperature sensor 317 is provided in the inner tank 315 and is connected to a field PLC. The field PLC is connected to the electric heating tube 316 to control the temperature of the circulating water in the inner tank 315. The connection between the temperature sensor 317 and the inner tank 315 is sealed.

[0026] The circulating water in the inner container 315 is pumped by the circulating water pump 32, and then is delivered to the top of the knife gate valve 22 of the discharge port 21 of the mud bin 2 through the water supply pipe 33, the water supply pipe 33 is wound around the discharge port to form a heating pipe 34, the heating pipe 34 heats the bin body near the knife gate valve 22, thereby realizing the heating and anti-freezing of the knife gate valve 22, and the circulating water is returned to the circulating water tank 31 through the return water pipe 35 after heating the bin body in the heating pipe 34, thereby realizing the circulation of water; The inside of the circulating pipeline and the circulating water tank 31 is provided with heat preservation cotton.

[0027] In the embodiment, the water supply pipe 33 and the return water pipe 35 are copper pipes, the inner container is made of stainless steel, and the connection parts of the water supply pipe 33, the return water pipe 35 and the temperature sensor 317 with the inner container 315 are sealed and connected by the sealing device 4, for example, the connection of the temperature sensor 317, the sealing device 4 comprises a first part 41 and a second part 43, the first part 41 comprises a first threaded connection part 411 and a butt joint part 412, the first threaded connection part 411 is threadedly connected with the side wall of the inner container 315 (an internal thread groove matched with the first threaded connection part 411 is welded on the inner container 315), a recessed threaded connection groove 4121 is arranged in the butt joint part 412, an elastic rubber ring 42 is arranged in the threaded connection groove 4121, the second part 43 comprises a second threaded connection part 431, the second threaded connection part 431 is matched with the threaded connection groove 4121, and the second part 43 is tightened to compress and deform the elastic rubber ring 42 and press the probe rod of the temperature sensor 317, thereby realizing the sealed connection of the temperature sensor 317 with the inner container 315.

[0028] A Y-type filter 331 is arranged on the delivery pipeline of the circulating water before the circulating water is delivered to the circulating water pump 32, and two Y-type filters 331 are arranged, one is used and the other is standby, and control valves 332 are arranged on the branch pipelines before and after each Y-type filter 331.

[0029] The principle of the utility model is:

[0030] The utility model is generally used in winter, in winter, because the temperature is low, the knife gate valve 22 exposed to the outside is easy to freeze, at this time, the circulating water is added to the circulating water tank 31, and an appropriate amount of antifreeze can be added in the process, so that the freezing of the circulating water caused by the shutdown of the equipment can be avoided, and the stability of use can be ensured.

[0031] The temperature of the circulating water heating can be set by the on-site PLC, such as 85 DEG C, and the temperature control involved in the process is a mature technical means, which will not be described here; at this time, the circulating water is filtered through the Y-type filter 331, and then is delivered to the discharge port 21 of the mud bin 2 through the circulating water pump 32, so that the knife gate valve 22 of the discharge port 21 can be heated, thereby realizing the anti-freezing, and ensuring the stable use of the knife gate valve 22 of the mud bin 2.

Claims

1. A kind of sewage treatment slurry bin knife gate valve anti-freezing device, based on the knife gate valve (22) of slurry bin (2) slurry outlet (21) place setting, it is characterized in that: The application relates to a circulating water tank (31) provided with an electric heating pipe (316), wherein the circulating water tank (31) is connected with a circulating water pump (32), the circulating water pump (32) is connected with a heating pipe (34) at a mud outlet (21) of a mud bin (2) through a water supply pipe (33), the heating pipe (34) is arranged above a knife gate valve (22) at the mud outlet (21), the heating pipe (34) is connected with a backwater pipe (35), and the backwater pipe (35) is connected with the circulating water tank (31) to form a loop.

2. A freeze protection device for a sewage treatment plug valve according to claim 1, wherein: The circulating water tank (31) comprises a tank body (311), and a tank cover (312) is detachably installed on the tank body (311); an inner container (315) is arranged in the tank body (311), and the electric heating pipe (316) is located below the bottom of the inner container (315).

3. A freeze protection device for a sewage treatment plug valve according to claim 2, wherein: The inner container (315) is provided with a temperature sensor (317), and the temperature sensor (317) is connected with a field PLC, and the PLC is connected with the electric heating pipe (316).

4. The freeze protection apparatus for a sewage treatment plug valve according to claim 3, wherein: The water supply pipe (33), the backwater pipe (35) and the temperature sensor (317) are sealingly connected with the inner container (315).

5. A freeze protection device for a sewage treatment plug valve according to claim 4, wherein: Sealing devices (4) are arranged at the connection positions of the water supply pipe (33), the backwater pipe (35) and the temperature sensor (317) and the inner container (315), the sealing device (4) comprises a first part (41) and a second part (43), the first part (41) comprises a first threaded connection part (411) and a butt joint part (412), the first threaded connection part (411) is sealingly connected with a connecting port on the inner container (315), a recessed threaded connection groove (4121) is arranged in the butt joint part (412), an elastic rubber ring (42) is arranged in the threaded connection groove (4121), the second part (43) comprises a second threaded connection part (431), the second threaded connection part (431) is matched with the threaded connection groove (4121), the water supply pipe (33), the backwater pipe (35) and a probe rod of the temperature sensor (317) are respectively penetratingly arranged in the sealing device (4), and the elastic rubber ring (42) is deformed and pressed on the probe rod of the water supply pipe (33), the backwater pipe (35) or the temperature sensor (317) in the tightening process of the second part (43).

6. A freeze protection device for a sewage treatment plug valve according to claim 2, wherein: The tank body (311) is internally provided with a supporting plate (314), the supporting plate (314) is provided with a placing hole, and the inner container (315) is supported and placed through the placing hole.

7. A freeze protection device for a sewage treatment plug valve according to claim 2, wherein: The water supply pipe (33), the heating pipe (34), the backwater pipe (35) and the inner periphery of the circulating water tank (31) are all provided with heat preservation cotton.

8. The freeze protection apparatus for a sewage treatment plug valve according to claim 1, wherein: A Y-shaped filter (331) is arranged between the water supply pipe (33) and the circulating water tank (31), the Y-shaped filter (331) is arranged in a standby mode, and control valves (332) are arranged on the front and back sides of the Y-shaped filter (331) on each water supply branch.

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