A constant temperature environmental protection system for PE pipe cooling system

Abstract

The utility model discloses a constant temperature environmental protection system for a PE pipe cooling system, including a booster pump, a quartz sand filter tank, an industrial chiller, a water inlet pipe, an upper three-way valve, a water distributor, a filter purification layer, a water collector, a lower three-way valve, a drain pipe, a water inlet, a chiller, a water reservoir, a water outlet, a temperature measuring device and a control unit. The quartz sand filter tank is used to filter and purify the direct cooling water layer by layer, so that the water quality of the cooling water is improved and the safety of related production equipment is maintained. The industrial chiller is used to set and control the constant temperature of the cooling water, so that the temperature of the environmentally friendly cooling water at the final outlet is constant at 10°C, which can speed up the cooling process of the PE pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pipe production equipment, in particular to a constant temperature environmental protection system for a PE pipe cooling system. Background Art

[0002] As an important component of chemical building materials, plastic pipes are widely accepted by users for their superior performance, hygiene, environmental protection, and low consumption. Polyethylene (PE) pipes are widely used in drainage pipes, water pipes, gas pipes, communication pipes, etc. due to their high strength, high temperature resistance, corrosion resistance, and non-toxicity. In particular, the wear resistance of high-density polyethylene (HDPE) ranks first among all engineering plastics, which is eye-catching. The higher the molecular weight of HDPE, the more wear-resistant the material is, and it can even exceed many metal materials such as carbon steel, stainless steel, and bronze. The service life of HDPE under strong corrosion and high wear conditions is 4-6 times that of steel pipes and 9 times that of ordinary polyethylene, and the transportation efficiency is also improved by 20%; it has good flame retardant and antistatic properties, and excellent impact resistance and wear resistance; its service life underground can exceed 20 years, greatly improving economic benefits.

[0003] The pipe production line consists of a feeding system, a control system, a screw extruder, a die, a sizing sleeve, a cooling system, a blister forming machine, a tractor, a planetary cutting device, and a turning rack. Because the processing temperature at the screw extruder and the die mold during the production of PE pipes is about 200°C, the PE blank pipe needs to be cooled at the sizing sleeve and the cooling system, especially after the blank enters the sizing device, it needs to be cooled by spraying or immersing in a vacuum box, and the spraying or immersion in the vacuum box requires the use of a cooling system, so the cooling system is very important. Conventional cooling systems use direct cooling water from industrial water for cooling. Since direct cooling water is generally only basically clarified and filtered, the water quality needs to be further treated; in addition, the temperature of direct cooling water varies greatly, such as in spring, autumn, summer, and winter, the temperature difference is large, which brings temperature difference changes to the cooling of PE pipes. How to improve the water quality of cooling water to maintain the safety of related production equipment and to achieve constant temperature of cooling water is very necessary. Summary of the invention

[0004] The purpose of the utility model is to solve the deficiencies of the prior art and to provide a constant temperature environmental protection system for a PE pipe cooling system.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] A constant temperature environmental protection system for a PE pipe cooling system comprises a booster pump, a quartz sand filter tank and an industrial chiller.

[0007] The booster pump is composed of a water inlet pipe, a booster pump main unit and a drain pipe, and is located at the front end of the constant temperature environmental protection system.

[0008] The quartz sand filter tank is composed of a water inlet pipe, an upper three-way valve, a water distributor, a filtration and purification layer, a water collector, a lower three-way valve and a drain pipe. The quartz sand filter tank is a cylindrical tank body, the water inlet pipe and the upper three-way valve are located above the outside of the quartz sand filter tank, the upper three-way valve is located outside the water inlet pipe and is connected to the water inlet pipe by a metal sleeve; a water distributor is arranged above the inside of the quartz sand filter tank, a filtration and purification layer is arranged in the middle of the inside of the quartz sand filter tank, a water collector is arranged below the inside of the quartz sand filter tank, a lower three-way valve and a drain pipe are arranged below the outside of the quartz sand filter tank, and the lower three-way valve is located outside the drain pipe and is connected to the drain pipe by a metal sleeve.

[0009] The industrial chiller is composed of a water inlet, a chiller, a water reservoir, a water outlet, a temperature measuring device and a control unit. The water inlet is located at the lower part of the external side of the industrial chiller, the chiller and the water reservoir are located at the left and right ends of the lower part of the interior of the industrial chiller, respectively, the water outlet is connected to the water reservoir by a metal ferrule and is located at the lower part of the other side of the exterior of the industrial chiller, a temperature measuring device is provided at the water outlet, the control unit is located at the upper part of the interior of the industrial chiller, and the temperature measuring device and the control unit are electrically connected.

[0010] Preferably, the filtration and purification layer is a multi-media filtration layer.

[0011] With the above technical solution, the upper filter material has the largest particle size and the smallest density, which plays a coarse filtration role; the middle filter material has a medium particle size and density, and the lower filter material has the smallest particle size and the largest density, which plays a fine filtration role. When water flows through the filtration and purification layer, it is filtered layer by layer, and impurities are trapped in the filtration and purification layer, giving full play to the role of the multi-media filtration layer.

[0012] Preferably, the water collector of the quartz sand filter tank is a plurality of evenly distributed water collectors.

[0013] By adopting the above technical solution, the filtered water is evenly collected and led out, and the horizontal flow filtration can make the filter filter at a high flow rate and still achieve a good filtering effect.

[0014] Preferably, the upper three-way valve and the lower three-way valve are connected to the water inlet pipe at the same time.

[0015] By adopting the above technical solution, the opening or closing of the upper three-way valve and the lower three-way valve can realize the filtering mode or the backwashing mode of the quartz sand filter tank.

[0016] Preferably, an electric control valve is provided at the water outlet, and the opening or closing of the electric control valve is controlled by a control unit.

[0017] By adopting the above technical solution, direct cooling water is pumped into the water inlet pipe by the booster pump, filtered and purified layer by layer in the quartz sand filter tank, and then enters the industrial chiller for cooling control. The control unit sets the temperature of the environmentally friendly cooling water to 10°C, so that the temperature of the environmentally friendly cooling water at the final outlet is constant at 10°C.

[0018] The beneficial effects of the utility model are:

[0019] 1. The direct cooling water is filtered and purified layer by layer using quartz sand filter tanks, which improves the water quality of the cooling water and maintains the safety of related production equipment.

[0020] 2. Use industrial chillers to set and control the constant temperature of cooling water, so that the temperature of environmentally friendly cooling water at the final outlet is constant at 10°C, which can speed up the cooling process of PE pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0023] Figure 1 The utility model is a structural schematic diagram of a constant temperature environmental protection system for a PE pipe cooling system.

[0024] Figure 1 Shown in: 1. Booster pump, 2. Quartz sand filter tank, 3. Industrial water chiller, 201. Water inlet pipe, 202. Upper three-way valve, 203. Water distributor, 204. Filter purification layer, 205. Water collector, 206. Lower three-way valve, 207. Drain pipe, 301. Water inlet, 302. Water chiller, 303. Water reservoir, 304. Water outlet, 305. Temperature measuring device, 306. Control unit.

[0025] Figure 2 The utility model is a schematic diagram of a filtering mode of a quartz sand filter tank for a constant temperature environmental protection system of a PE pipe cooling system.

[0026] Figure 3 The utility model is a schematic diagram of a backwash mode of a quartz sand filter tank for a constant temperature environmental protection system of a PE pipe cooling system. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The terms such as "upper", "lower", "left", "right", etc. cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0029] Reference Figure 1 The utility model discloses a constant temperature environmental protection system for a PE pipe cooling system, comprising a booster pump 1, a quartz sand filter tank 2, an industrial chiller 3, a water inlet pipe 201, an upper three-way valve 202, a water distributor 203, a filter purification layer 204, a water collector 205, a lower three-way valve 206, a drain pipe 207, a water inlet 301, a chiller 302, a water reservoir 303, a water outlet 304, a temperature measuring device 305 and a control unit 306.

[0030] The chiller used in this embodiment is a chiller produced by Zhejiang Qingfeng Environmental Protection Co., Ltd., model QLB120SC-UU, input power 24.72 kW, maximum operating current 45.7 A, cooling capacity 119.6 kW, refrigerant R22 / 22kg, energy efficiency ratio 4.84, input power 380 V, phase number 3 PH, frequency 50 Hz, cooling water flow 25.71 m 3 / h, cooling pipe diameter DN 40, chilled water flow rate 20.57 m 3 / h, the diameter of the refrigeration pipe is DN 65, the total weight of the unit is 720 kg, and the overall dimensions of the unit are 2200*950*1288 mm.

[0031] Reference Figure 2The utility model proposes a quartz sand filter tank for a constant temperature environmental protection system of a PE pipe cooling system. The working process of the filtering mode is as follows:

[0032] 1. The upper three-way valve 202 opens through hole 1 and through hole 2, and closes through hole 3; the lower three-way valve 206 closes through hole 4, and opens through holes 5 and 6.

[0033] 2. Because through hole 4 is closed, direct cooling water flows from the water inlet pipe 201 through the upper three-way valve 202, passes through through holes 1 and 2, and enters the quartz sand filter tank 2 from above the quartz sand filter tank 2.

[0034] 3. The water is evenly spread through the water distributor 203 and dispersed to the filtration and purification layer 204 for layer-by-layer filtration and purification, and then drips onto the water collector 205 for collection.

[0035] 4. It reaches the lower three-way valve 206, passes through holes 5 and 6, and flows out into the drain pipe 207.

[0036] Reference Figure 3 The utility model proposes a quartz sand filter tank for a constant temperature environmental protection system of a PE pipe cooling system. The working process of the backwash mode is as follows:

[0037] 1. The upper three-way valve 202 closes through hole 1 and opens through holes 2 and 3; the lower three-way valve 206 closes through hole 6 and opens through holes 4 and 5.

[0038] 2. Because the through hole 1 is closed, the direct cooling water flows from the water inlet pipe 201 to the lower three-way valve 206, passes through the through holes 4 and 5, and enters the quartz sand filter tank 2 from the bottom of the quartz sand filter tank 2.

[0039] 3. After passing through the water collector 205, it reaches the filtration and purification layer 204, and the impurities, adsorbents and suspended matter in each layer of the filtration and purification layer 204 are reversely flushed from bottom to top.

[0040] 4. Then it passes through the water distributor 203 to reach the upper three-way valve 202, and is discharged to the outside through holes 2 and 3.

[0041] The working process of this embodiment is as follows:

[0042] 1. Direct cooling water is pumped by booster pump 1 and flows into water inlet pipe 201 after being pressurized.

[0043] 2. The upper three-way valve 202 opens through hole 1 and through hole 2, and closes through hole 3; the lower three-way valve 206 closes through hole 4, and opens through holes 5 and 6.

[0044] 3. Because the through hole 4 is closed, direct cooling water flows from the water inlet pipe 201 through the upper three-way valve 202, passes through the through holes 1 and 2, and enters the quartz sand filter tank 2 from above the quartz sand filter tank 2.

[0045] 4. The water is first evenly spread through the water distributor 203 to the filtration and purification layer 204 for layer-by-layer filtration and purification, and then drips onto the water collector 205 for collection.

[0046] 5. It reaches the lower three-way valve 206, passes through the through holes 5 and 6, enters the drain pipe 207, and flows into the water inlet 301.

[0047] 6. The environmental water flows into the chiller 302 from the water inlet 301, and is cooled by the chiller 302 before flowing into the water reservoir 303.

[0048] 7. The temperature measuring device 305 monitors the cooling water temperature at the water outlet 304 in real time, and feeds back the temperature to the control unit 306 in real time, and the control unit 306 controls the opening or closing of the electric control valve at the water outlet 304.

[0049] 8. When the temperature of the environmentally friendly cooling water at the water outlet 304 is constant at 10°C, the electric control valve at the water outlet 304 is opened, and the 10°C constant temperature environmentally friendly cooling water flows out from the water outlet 304.

[0050] Of course, the embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A constant temperature environmental protection system for PE pipe cooling system, characterized by: The invention comprises a booster pump (1), a quartz sand filter tank (2) and an industrial water chiller (3); the booster pump (1) is composed of a water inlet pipe, a booster pump main unit and a drain pipe, and is located at the front end of the constant temperature environmental protection system; the quartz sand filter tank (2) is composed of a water inlet pipe (201), an upper three-way valve (202), a water distributor (203), a filtration and purification layer (204), a water collector (205), a lower three-way valve (206) and a drain pipe (207); the quartz sand filter tank (2) is a cylindrical tank body, the water inlet pipe (201) and the lower three-way valve (206) are connected to the water inlet pipe (201) and the drain pipe (207). The upper three-way valve (202) is located above the outside of the quartz sand filter tank (2); the upper three-way valve (202) is located outside the water inlet pipe (201) and is connected to the water inlet pipe (201) by a metal sleeve; a water distributor (203) is arranged above the inside of the quartz sand filter tank (2); a filtering and purifying layer (204) is arranged in the middle of the inside of the quartz sand filter tank (2); a water collector (205) is arranged below the inside of the quartz sand filter tank (2); and a water filter (206) is arranged outside the quartz sand filter tank (2). A lower three-way valve (206) and a drain pipe (207) are provided below the industrial chiller (3); the lower three-way valve (206) is located outside the drain pipe (207) and is connected to the drain pipe (207) by a metal sleeve; the industrial chiller (3) is composed of a water inlet (301), a chiller (302), a water reservoir (303), a water outlet (304), a temperature measuring device (305) and a control unit (306); the water inlet (301) is located at the lower part of the outer side of the industrial chiller (3); the chiller (302) is connected to the drain pipe (207) by a metal sleeve; (302) and the water reservoir (303) are respectively located at the left and right ends of the lower inner part of the industrial water chiller (3); the water outlet (304) is connected to the water reservoir (303) by a metal ferrule and is located at the lower outer part of the other side of the industrial water chiller (3); a temperature measuring device (305) is provided at the water outlet (304); the control unit (306) is located at the upper inner part of the industrial water chiller (3); and the temperature measuring device (305) and the control unit (306) are electrically connected.

2. A constant temperature environmental protection system for a PE pipe cooling system according to claim 1, characterized in that: The filtering and purifying layer (204) is a multi-media filtering layer.

3. The constant temperature environmental protection system for a PE pipe cooling system according to claim 1, characterized in that: The water collector (205) of the quartz sand filter tank (2) is a plurality of evenly distributed water collectors.

4. The constant temperature environmental protection system for a PE pipe cooling system according to claim 1, characterized in that: The upper three-way valve (202) and the lower three-way valve (206) are connected to the water inlet pipe (201) at the same time.

5. The constant temperature environmental protection system for a PE pipe cooling system according to claim 1, characterized in that: An electric control valve is provided at the water outlet (304), and the opening or closing of the electric control valve is controlled by a control unit (306).

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