Meter weight control system for plastic pipe production

Abstract

The utility model discloses a meter weight control system for plastic pipe production. The meter weight control system comprises a double-screw extruder, the pipe detection and transportation system is positioned at the downstream of the double-screw extruder; the feeding end of the double-screw extruder is provided with two pieces of parallel meter weight control equipment, and the two pieces of parallel meter weight control equipment are both communicated with a hopper above the two pieces of parallel meter weight control equipment; the two meter weight control devices which are connected in parallel work alternately in the mode that one device works, and the other device is standby. The system provided by the utility model is provided with double meter weight control devices and a hopper with double discharge ports, one meter weight control device can be selected as a working device and the other meter weight control device can be used as a standby device according to the requirement of regular checking, and the two meter weight control devices are alternately used, so that the working efficiency is improved. According to the device, regular cleaning of working meter weight control equipment can be achieved on the basis that whole-line parking is not needed, the production requirements of modern production enterprises for high yield and high product quality are met, and the quality requirements of pipe products are also guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe production and processing technical field especially relates to a pipe production line's meter weight control system based on double meter weight control equipment. BACKGROUND

[0002] In the production of plastic pipe, meter weight is the most important index of pipe production. At present, there are various meter weight meters / meter weight control equipment, for example, the weight loss type meter weight control equipment can control the feeding amount of the extruder according to the process requirement more accurately through the metering element in the metering barrel, ensures that the pipe produced by the extruder meets the wall thickness requirement of the process, that is, finally ensures that the meter weight meets the process requirement.

[0003] At present, most of the production lines are single meter weight meters / meter weight control equipment, but due to the viscosity temperature of raw materials, part of viscous raw materials will adhere to the inner wall of the meter weight meter / meter weight control equipment, which will directly affect the metering effect and thus affect the quality of pipe products. The meter weight equipment needs to be cleaned regularly to ensure the accuracy of metering, but the single meter weight meter needs to be stopped for maintenance or replacement, which will also affect the production cycle. Obviously, this cannot meet the requirements of modern production enterprises for high yield and high quality.

[0004] Therefore, based on the above technical problems, the skilled in the art urgently needs to develop a meter weight control system for plastic pipe production. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a meter weight control system for plastic pipe production, which is provided with double meter weight control equipment, a hopper with double discharge ports, according to the requirement of periodic inspection, one of the meter weight control equipment can be selected as working equipment, and the other one as standby, so that the working meter weight control equipment can be cleaned regularly without stopping the whole line, meeting the production requirements of modern production enterprises for high yield and high quality, and ensuring the quality requirements of pipe products.

[0006] In order to realize the above purpose, the utility model provides the following technical scheme:

[0007] The utility model relates to a meter weight control system for plastic pipe production, which comprises:

[0008] Double screw extruder; and

[0009] Pipe detection and transportation system located downstream of the double screw extruder process;

[0010] The feeding end of the double screw extruder is provided with two parallel metering control devices, and both of the metering control devices are communicated with the upper hopper;

[0011] The two parallel metering control devices work alternately in a mode of one working and the other standby.

[0012] Further, the hopper is provided with two discharge outlets below;

[0013] Each of the metering control devices is connected with one of the discharge outlets to receive the raw materials in the hopper;

[0014] Both of the metering control devices are arranged below the hopper, and the double screw extruder has two feeding inlets, and each of the metering control devices is connected with one of the feeding inlets;

[0015] The discharge outlet is provided with a hopper valve for controlling the communication state of the discharge outlet.

[0016] Further, the metering control device is connected with the feeding inlet and the discharge outlet through flanges;

[0017] When any of the metering control devices stops working, the hopper valve of the corresponding discharge outlet is closed;

[0018] When any of the metering control devices is disassembled for maintenance, the corresponding discharge outlet and the corresponding feeding inlet are blocked by blind plates.

[0019] Further, the outer wall of the metering barrel of the metering control device is fixed with a lifting ring, the lifting ring is a circular ring structure fixed to the outer wall of the metering barrel, and the lifting ring is symmetrically provided with two lifting hooks;

[0020] The two lifting hooks are connected by external lifting equipment to lift the metering control device.

[0021] Further, the process downstream end of the double screw extruder is provided with a vacuum box and a cooling water tank, and a pipe thickness gauge is arranged between the vacuum box and the cooling water tank, and the process downstream end of the cooling water tank is provided with a pipe traction device, and the pipe material extruded by the double screw extruder passes through the vacuum box, the pipe thickness gauge and the cooling water tank in sequence through the pipe traction device.

[0022] Further, the pipe detection and transportation system further comprises a metering instrument arranged at the process upstream end of the pipe traction device.

[0023] Further, the transportation system is configured as a conveyor belt arranged at the process downstream end of the pipe traction device.

[0024] In the above technical scheme, the meter weight control system for plastic pipe production has the following beneficial effects:

[0025] The system is provided with double meter weight control devices, a hopper with double discharge ports is configured, according to the requirement of fixed inspection, one of the meter weight control devices can be selected as a working device, and the other one is used as a backup, so that the working meter weight control device can be cleaned regularly without stopping the whole line, the production requirement of high yield and high product quality of modern production enterprises is met, and the quality requirement of the pipe product is also ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0027] Fig. 1 The structure schematic diagram of the meter weight control system for plastic pipe production provided by the embodiment of the present application is shown in the figure.

[0028] Fig. 2 The structure schematic diagram of the single-side meter weight control device of the meter weight control system for plastic pipe production provided by the embodiment of the present application in the maintenance state is shown in the figure.

[0029] Fig. 3 The hoisting structure schematic diagram of the meter weight control device of the meter weight control system for plastic pipe production provided by the embodiment of the present application is shown in the figure.

[0030] Fig. 4 The system flow chart of the meter weight control system for plastic pipe production provided by the embodiment of the present application applied to the plastic pipe production system is shown in the figure.

[0031] Explanation of reference signs:

[0032] 1, double screw extruder; 2, hopper; 3, blind plate; 4, meter weight control device; 5, vacuum box; 6, pipe thickness gauge; 7, cooling water tank; 8, metering instrument; 9, pipe traction device; 10, cutting machine;

[0033] 101, feeding port;

[0034] 201, discharge port; 202, hopper valve; 203, hopper platform;

[0035] 401, hoisting ring; 402, lifting hook. DETAILED DESCRIPTION

[0036] In order to make the technical scheme of the utility model better understood by the skilled in the art, the utility model will be further described in detail below in combination with the drawings.

[0037] Referring to Figs. 1 to 4 As shown in the figure;

[0038] The embodiment discloses a meter weight control system for plastic pipe production, which comprises:

[0039] A double screw extruder 1; and

[0040] A pipe detection and transportation system located downstream of the double screw extruder 1 in process;

[0041] The feeding end of the double screw extruder 1 is provided with two parallel meter weight control devices 4, and the two meter weight control devices 4 are both in communication with the upper hopper 2.

[0042] The two parallel meter weight control devices 4 work alternately in a mode of one working and the other being on standby.

[0043] Specifically, the embodiment discloses a meter weight control system based on double meter weight control devices 4, that is, two meter weight control devices 4 are arranged at the feeding end of the double screw extruder 1 of the plastic pipe production line, and the two meter weight control devices 4 are arranged in parallel and share one hopper 2; specifically, a use mode of “one working and the other being on standby” is adopted. After one meter weight control device 4 is used for a certain period of time, it needs to be regularly inspected, that is, the inner wall needs to be cleaned, then the meter weight control device 4 is closed, and the other meter weight control device 4 is opened. At this time, the meter weight control device 4 that needs to be regularly inspected can be disassembled and cleaned. In this way, the repair of the meter weight control device 4 can be completed under the condition of no shutdown, and the high production requirement of modern enterprises can also be met. The meter weight control device 4 of the embodiment can select any meter weight metering instrument or meter weight metering device that meets the process requirement in the prior art, and details are not repeated here.

[0044] Preferably, the hopper 2 of the embodiment is provided with two discharge ports 201 below;

[0045] Each meter weight control device 4 is connected with one discharge port 201 to receive the raw materials in the hopper 2.

[0046] The two meter weight control devices 4 are both arranged below the hopper 2, and the double screw extruder 1 has two feeding ports 101, and each meter weight control device 4 is connected with one feeding port 101.

[0047] The discharge port 201 is provided with a hopper valve 202 for controlling the communication state of the discharge port 201.

[0048] The embodiment selects a double screw extruder 1, the double screw extruder 1 can set two feeding ports 101 according to the output requirement and process requirement, and the two feeding ports 101 are in communication with the internal feeding channel of the double screw extruder 1, so that the two feeding ports 101 can be used in cooperation with two meter weight control devices 4. The hopper 2 of the embodiment is used to deliver raw materials to any meter weight control device 4, so that two discharge ports 201 are formed at the lower end of the hopper 2, and the two discharge ports 201 are still in communication with each meter weight control device 4 respectively, and a hopper valve 202 is arranged on the discharge port 201 to close the discharge of the discharge port 201 when any meter weight control device 4 needs to stop.

[0049] As an extended embodiment, the meter weight control device 4 and the corresponding pipe port of the embodiment can adopt a direct connection mode, or can adopt a necessary pipe communication mode according to the production site device arrangement requirement, and these are all conventional designs, which will not be described here.

[0050] Preferably, the meter weight control device 4 of the embodiment is connected with the feeding port 101 and the discharge port 201 through a flange plate;

[0051] When any meter weight control device 4 stops working, the hopper valve 202 of the corresponding discharge port 201 is closed;

[0052] When any meter weight control device 4 is disassembled for maintenance, the corresponding discharge port 201 and the corresponding feeding port 101 are both plugged by a blind plate 3.

[0053] In order to keep the workshop clean and avoid leakage of raw materials, the pipe port needs to be plugged by the blind plate 3 after the meter weight control device 4 is disassembled in the embodiment.

[0054] In order to facilitate the fixation of the outer wall of the metering barrel of the meter weight control device 4, a lifting ring 401 is fixed to the outer wall of the metering barrel, the lifting ring 401 is a circular ring structure fixed to the outer wall of the metering barrel, and the lifting ring 401 is symmetrically provided with two lifting hooks 402;

[0055] The two lifting hooks 402 are connected by an external lifting device to lift the meter weight control device 4.

[0056] Secondly, the embodiment based on the existing production line further introduces the composition of the plastic pipe production line, specifically: the downstream end of the process of the double screw extruder 1 is provided with a vacuum box 5 and a cooling water tank 7, and a pipe thickness gauge 6 is arranged between the vacuum box 5 and the cooling water tank 7, and the downstream end of the process of the cooling water tank 7 is provided with a pipe traction device 9, and the pipe extruded by the double screw extruder 1 is driven by the pipe traction device 9 to pass through the vacuum box 5, the pipe thickness gauge 6 and the cooling water tank 7 in turn. The pipe detection and transportation system of the embodiment further comprises a metering instrument 8 arranged at the upstream end of the process of the pipe traction device 9. Among them, the transportation system of the embodiment is configured as a conveying belt arranged downstream of the process of the pipe traction device 9, and the pipe output by the pipe traction device 9 is cut by a cutting machine 10 and then conveyed to the downstream of the process by the conveying belt.

[0057] The position of each main equipment of the production line is further limited, wherein the metering instrument 8 for the meter weight control of the plastic pipe, such as the meter weight control device 4, the pipe thickness gauge 6 and the metering instrument 8, can all select the commonly used instrument in the prior art, and therefore the working principle thereof is not described again.

[0058] In addition, as an extended embodiment, the meter weight control device 4, the pipe thickness gauge 6 and the metering instrument 8 of the embodiment can all be in communication connection with the controller and transmit the measurement data to the controller in real time, and the operator can monitor the various process parameters of the produced pipe in real time through the display screen of the controller, so as to manually intervene when necessary to ensure the smooth production.

[0059] In the above technical scheme, the meter weight control system for plastic pipe production has the following beneficial effects:

[0060] The system of the utility model sets up double meter weight control devices, and is provided with a hopper 2 with double discharge ports 201, according to the requirement of fixed inspection, one of the meter weight control devices 4 can be selected as the working device, and the other one is used as the standby, so that the fixed inspection of the working meter weight control device 4 can be realized without stopping the whole line, the production requirement of high yield and high product quality of the modern production enterprise is met, and the quality requirement of the pipe product is also ensured.

[0061] The above only describes certain exemplary embodiments of the utility model by way of illustration, without doubt, for ordinary skilled in the art, under the condition of not deviating from the spirit and scope of the utility model, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the utility model.

Claims

1. A weight control system for the production of plastic pipe, characterized in that, The rice weight control system comprises: a double screw extruder (1); and a pipe detection and transportation system located downstream of the process of the double screw extruder (1); the feeding end of the double screw extruder (1) is provided with two parallel rice weight control devices (4), and the two rice weight control devices (4) are both in communication with the upper hopper (2); the two parallel rice weight control devices (4) work alternately in a mode of one working and the other being on standby.

2. The mass control system for plastic pipe production according to claim 1, characterized by, The lower part of the hopper (2) is provided with two discharge ports (201); each rice weight control device (4) is connected with one discharge port (201) to receive raw materials in the hopper (2); the two rice weight control devices (4) are both located below the hopper (2), and the double screw extruder (1) has two feeding ports (101), and each rice weight control device (4) is connected with one feeding port (101); the discharge port (201) is provided with a hopper valve (202) for controlling the communication state of the discharge port (201).

3. The mass control system for plastic pipe production according to claim 2, characterized by The rice weight control device (4) is connected with the feeding port (101) and the discharge port (201) through flanges; when any rice weight control device (4) stops working, the hopper valve (202) of the corresponding discharge port (201) is closed; when any rice weight control device (4) is disassembled for maintenance, the corresponding discharge port (201) and the corresponding feeding port (101) are both blocked by a blind plate (3).

4. The mass control system for plastic pipe production according to any one of claims 1 to 3, characterized by, The outer wall of the metering barrel of the rice weight control device (4) is fixed with a lifting ring (401), and the lifting ring (401) is a circular ring structure fixed to the outer wall of the metering barrel, and the lifting ring (401) is symmetrically provided with two lifting hooks (402); two lifting hooks (402) are connected by external lifting equipment to lift the rice weight control device (4).

5. The mass control system for plastic pipe production according to any one of claims 1 to 3, characterized by, The downstream end of the process of the double screw extruder (1) is provided with a vacuum box (5) and a cooling water tank (7), and a pipe thickness gauge (6) is arranged between the vacuum box (5) and the cooling water tank (7), and the downstream end of the process of the cooling water tank (7) is provided with a pipe traction device (9), and the pipe traction device (9) drives the pipe extruded by the double screw extruder (1) to pass through the vacuum box (5), the pipe thickness gauge (6) and the cooling water tank (7) in sequence.

6. The mass control system for plastic pipe production according to claim 5, wherein The pipe detection and transportation system further comprises a metering instrument (8) arranged at the upstream end of the process of the pipe traction device (9).

7. The mass control system for plastic pipe production according to claim 5, wherein The transportation system is configured as a conveyor belt arranged downstream of the process of the pipe traction device (9).

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