Improved cleaning line structure

Abstract

The utility model discloses an improved cleaning line structure which comprises a first pressurizing device, a second pressurizing device, a first metering device, a second metering device, a limiting angle seat valve and a controller. The input end of the first pressurizing device is communicated with the output end of a water source, the output end of the first pressurizing device is communicated with the first end of a three-way device, a first metering device is arranged in a pipeline between the first pressurizing device and the three-way device, and the second end of the three-way device is communicated with a first cleaning pipeline. The third end of the three-way device is communicated with the input end of a second pressurizing device, a limiting angle seat valve is arranged in a pipeline between the three-way device and the second pressurizing device, the output end of the second pressurizing device is communicated with a second cleaning pipeline, and a second metering device is arranged in a pipeline between the second pressurizing device and the second cleaning pipeline. The utility model has the beneficial effect that the requirements of cleaning equipment on stable flow and different pressures can be met at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to physical field especially relates to cleaning technology, a kind of improved cleaning line structure. BACKGROUND

[0002] Dairy factory utilizes a variety of equipment in production process, and dairy factory generally adopts CIP cleaning (Cleaning in Place, cleaning in place or online cleaning) to clean equipment. Part of equipment needs to be provided with different cleaning flow and pressure for simultaneous cleaning by two cleaning lines. But two cleaning lines need stable flow respectively, and different pressure is provided simultaneously, otherwise the cleaning requirement of equipment cannot be met.

[0003] If cleaning flow cannot meet the requirement of equipment cleaning, equipment cleaning is not thorough. Because the internal structure of food production equipment is complex, there are many pipelines, valves, tank bodies and other components, if cleaning flow is insufficient, cleaning liquid cannot fully cover each corner and surface of equipment, some stubborn dirt, residual food and the like are difficult to be washed away, bacteria can be bred for long-term accumulation, and food safety is affected.

[0004] If cleaning pressure cannot meet the requirement of equipment cleaning, mechanical action is insufficient during cleaning. Because cleaning pressure is the key factor for cleaning liquid to generate sufficient mechanical action. If pressure is insufficient, cleaning liquid cannot form effective impact and stripping on dirt on the surface of equipment, and it is difficult to remove firmly adhered stains.

[0005] In prior art, cleaning liquid flow and pressure of dairy factory equipment cleaning line often cannot meet the requirement of equipment cleaning, resulting in low equipment cleaning efficiency and incomplete cleaning. UTILITY MODEL CONTENT

[0006] The utility model aims at providing an improved cleaning line structure, which solves the technical problem that cleaning liquid flow and pressure of separate cleaning equipment in prior art cannot meet the requirement of equipment cleaning.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] An improved cleaning line structure, comprising a first pressurizing device, a second pressurizing device, a first metering device, a second metering device, a limit angle seat valve and a controller; the input end of the first pressurizing device is communicated with the output end of a water source, the output end of the first pressurizing device is communicated with the first end of a three-way device, the pipeline between the first pressurizing device and the three-way device is provided with the first metering device, the second end of the three-way device is communicated with a first cleaning pipeline, the third end of the three-way device is communicated with the input end of the second pressurizing device, the pipeline between the three-way device and the second pressurizing device is provided with the limit angle seat valve, the output end of the second pressurizing device is communicated with a second cleaning pipeline, the pipeline between the second pressurizing device and the second cleaning pipeline is provided with the second metering device, the signal output end of the first metering device is connected with the signal input end of the controller, the first pressurizing device comprises a motor, the control end of the motor is connected with the signal output end of a frequency converter, and the control circuit of the frequency converter is connected with the signal output end of the controller.

[0009] Further, the first pressurizing device and the second pressurizing device each comprise a vane type centrifugal pump, the first pressurizing device is a large capacity centrifugal pump, and the second pressurizing device is a small capacity centrifugal pump.

[0010] Further, the first metering device is a flow meter, and the second metering device is a flow table.

[0011] Working principle:

[0012] The first pressurizing device provides a total cleaning demand flow and part of pressure, the second pressurizing device is installed on a cleaning line with higher pressure demand, provides a demand flow of the cleaning line and realizes pressure boosting of the cleaning line, the first metering device is used for monitoring and feeding back the flow of the cleaning line, and the second metering device is used for monitoring the flow of the cleaning line with small flow demand. When debugging, the limit mechanism of the limit angle seat valve is adjusted, so that the small flow meets the demand of the cleaning line, and when running, two different output flows can be obtained, and the cleaning line with small flow is pressurized, that is, two different output pressures can be obtained.

[0013] Compared with the prior art, the improved cleaning line structure has the beneficial effects that the single device can meet the demand of stable flow and different pressure of the cleaning device. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic view of an improved cleaning line structure of the utility model.

[0015] Figure 2 is a schematic view of a full closed state of the limit angle seat valve in the utility model.

[0016] Figure 3 is the schematic diagram of the limiting state of the limiting angle seat valve in the utility model. DETAILED DESCRIPTION

[0017] EMBODIMENT

[0018] Please refer to Figure 1 The utility model provides a technical scheme:

[0019] An improved cleaning line structure, comprising a first pressurizing device 1, a second pressurizing device 2, a first metering device 3, a second metering device 4, a limiting angle seat valve 5 and a controller (not shown in the figure), the input end of the first pressurizing device 1 is communicated with the output end of a water source, the output end of the first pressurizing device 1 is communicated with the first end of a three-way device, the pipeline between the first pressurizing device 1 and the three-way device is provided with the first metering device 3, the second end of the three-way device is communicated with a first cleaning pipeline 7, the third end of the three-way device is communicated with the input end of the second pressurizing device 2, the pipeline between the three-way device and the second pressurizing device 2 is provided with the limiting angle seat valve 5, the output end of the second pressurizing device 2 is communicated with a second cleaning pipeline 8, the pipeline between the second pressurizing device 2 and the second cleaning pipeline 8 is provided with the second metering device 4, the signal output end of the first metering device 3 is connected with the signal input end of the controller, the first pressurizing device 1 comprises a motor, the control end of the motor is connected with the output end of a frequency converter 6, and the control circuit of the frequency converter 6 is connected with the signal output end of the controller.

[0020] Further, the first pressurizing device 1 and the second pressurizing device 2 each comprise a vane type centrifugal pump, the first pressurizing device 1 is a large-capacity centrifugal pump, and the second pressurizing device 2 is a small-capacity centrifugal pump.

[0021] Further, the first metering device 3 is a flow meter, and the second metering device 4 is a flow meter.

[0022] Specifically, the device is fixed on a stainless steel frame and installed near a place where a cleaning unit is needed.

[0023] Specifically, the controller is selected from PLC or a single-chip microcomputer.

[0024] The first pressurizing device 1, the second pressurizing device 2, the motor, the vane type centrifugal pump, the three-way device, the first metering device 3, the second metering device 4, the limiting angle seat valve 5, the frequency converter 6 and the controller in the utility model all adopt known products or technical schemes in the prior art, for example, the limiting angle seat valve 5 is an angle seat valve with a limiting mechanism.

[0025] Working process:

[0026] The centrifugal pump used by the first pressurizing device 1 and the second pressurizing device 2 is a vane pump, when working, the impeller rotates at high speed, and liquid obtains energy under the action of inertial centrifugal force to increase the pressure. The centrifugal pump with the sanitary type design is adopted, all flow materials are food-grade stainless steel SS316L materials (low-carbon stainless steel materials), the mechanical seal is made of silicon carbide material, the shaft seal optimizes the cooling and lubrication of the sealing surface, and meanwhile the sealing chamber can efficiently dissipate heat to reduce the risk of "dry running". The motor for driving the impeller to rotate adopts an IE3 motor, and the energy efficiency is higher. The I-CP series centrifugal pump of alfa laval (alfa laval (Shanghai) Technology Co., Ltd.) can be selected.

[0027] The frequency converter 6 is used to control the rotating speed of the centrifugal pump, so as to adjust the flow of the output end of the water source and the first end of the three-way device. The frequency converter 6 adopts an IP20 protection level, and can realize accurate and effective motor control. The frequency converter product of DANFOSS can be selected, and the built-in functions are helpful to save installation space, setting time and daily maintenance energy, and can improve production efficiency and cost benefit.

[0028] The first metering device 3 is a flowmeter, which is arranged on one side of the output end of the first pressurizing device 1, and is used for monitoring the total flow (water or cleaning liquid) of the cleaning line output and feeding back information to the controller. The second metering device 4 is a flowmeter, which is arranged on the outlet section of the second pressurizing device 2, and the operator can monitor the flow of the second cleaning pipeline 8 through the second metering device 4. The first metering device 3 and the second metering device 4 both adopt food-grade sanitary products, for example, the first metering device 3 selects the 5HBB series electromagnetic flowmeter of E+H (Endress+Hauser), and the second metering device 4 can select the flowmeter of Zhilian (Shanghai Zhilian Instrument and Meter Co., Ltd.), and the flow material is food-grade stainless steel SS316L material, which can be directly contacted with the product and can accurately feedback the real-time flow of the cleaning line.

[0029] The limit angle seat valve 5 is arranged on the pipeline between the third end of the three-way device and the second pressurizing device 2, before the utility model is put into operation, the flow of the pipeline between the third end of the three-way device and the second pressurizing device 2 is pre-set by using the limiting mechanism of the limit angle seat valve 5, that is, the fluid volume passing through a radial section of the pipeline in unit time is pre-set, so that the purpose of accurately controlling the flow in operation is realized. In the embodiment, the JF12050025WH CF8M BPE SL limit angle seat valve of ESG (Qingdao Jingrui Machinery Manufacturing Co., Ltd.) is selected. Figure 2 and Figure 3As shown in the figure, 9 represents the valve stem, and 10 represents the adjusting knob of the limiting mechanism. The limiting angle seat valve is based on the ordinary angle seat valve with the addition of a limiting mechanism. The limiting mechanism can restrict the position of the valve stem within the valve cavity. Ordinary angle seat valves only have two states: fully open and fully closed. By adjusting the knob of the limiting mechanism, the limiting angle seat valve can also achieve opening degrees of 40%, 50%, and 60%, thereby reducing the cross-sectional area of ​​the pipeline. According to the flow formula Q=SV (Q is the flow rate, S is the cross-sectional area, and V is the flow velocity), by decreasing S while keeping V constant, the flow rate is reduced. This limiting angle seat valve 5 adopts a food-grade hygienic design, and all sealing rings meet FDA certification (US Food and Drug Administration). It is made of EPDM material (Ethylene Propylene Diene Monomer, a synthetic rubber material). Operators can adjust the opening degree of the limiting angle seat valve 5 according to the display reading through the second metering device 4 to achieve flow control for this cleaning line.

[0030] Specifically, during the commissioning phase: first, the operating frequency of the motor in the first pressurizing device 1 is reduced by the controller to decrease pressure interference. Then, the reading of the second metering device 4 is observed. Simultaneously, the operator manually adjusts the adjusting knob 10 of the limit mechanism in the limit angle seat valve 5 until the reading displayed by the second metering device 4 meets the flow requirements of the second cleaning pipeline 8. Commissioning is then complete. Afterward, each time the total output flow rate is adjusted, the limit mechanism in the limit angle seat valve 5 is readjusted to adapt to different flow rates.

[0031] Usage Stage: After the cleaning fluid is output from the first pressurizing device 1, it is diverted through a three-way device to the first cleaning pipeline 7 and the second cleaning pipeline 8. Due to the flow restriction of the limiting angle seat valve 5, the first section of the second cleaning pipeline 8 can only pass through a limited flow rate, while the remaining flow rate flows to the first cleaning pipeline 7. This achieves the effect that the flow rate of the first cleaning pipeline 7 is greater than that of the second cleaning pipeline 8. The second pressurizing device 2 is installed at the first section of the second cleaning pipeline 8. After starting, it can increase the pressure of the second cleaning pipeline 8, thereby achieving the effect that the pressure of the second cleaning pipeline 8 is greater than that of the first cleaning pipeline 7. Thus, the cleaning line simultaneously obtains a large flow rate output and a large pressure output, which can clean the equipment at the same time.

Claims

1. An improved cleaning line structure, characterized in that: It includes a first pressurizing device (1), a second pressurizing device (2), a first metering device (3), a second metering device (4), a limit angle seat valve (5), and a controller; the input end of the first pressurizing device (1) is connected to the output end of a water source, the output end of the first pressurizing device (1) is connected to the first end of a three-way device, a first metering device (3) is installed in the pipeline between the first pressurizing device (1) and the three-way device, the second end of the three-way device is connected to a first cleaning pipeline (7), the third end of the three-way device is connected to the input end of the second pressurizing device (2), and the three-way device and the... The limiting angle seat valve (5) is installed in the pipeline between the second pressurizing device (2) shown. The output end of the second pressurizing device (2) is connected to the second cleaning pipeline (8). The second metering device (4) is installed in the pipeline between the second pressurizing device (2) and the second cleaning pipeline (8). The signal output end of the first metering device (3) is connected to the signal input end of the controller. The first pressurizing device (1) includes a motor. The control end of the motor is connected to the signal output end of a frequency converter (6). The control line of the frequency converter (6) is connected to the signal output end of the controller.

2. The improved cleaning line structure according to claim 1, characterized in that: The first pressurizing device (1) and the second pressurizing device (2) each include a vane centrifugal pump. The first pressurizing device (1) is a high-capacity centrifugal pump, and the second pressurizing device (2) is a low-capacity centrifugal pump.

3. The improved cleaning line structure according to claim 1, characterized in that: The first metering device (3) is a flow meter, and the second metering device (4) is a flow meter.

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