Negative pressure suction device for steel pipe cold drawing machine

Abstract

The utility model provides a negative pressure suction device for a steel pipe cold-drawing machine, which comprises the steel pipe cold-drawing machine, a steel pipe penetrates through the steel pipe cold-drawing machine, the steel pipe cold-drawing machine can clamp and draw the steel pipe, an oil pump and an oil cooling spray pipe are arranged in front of the steel pipe cold-drawing machine, and an inlet of the oil pump is connected with an oil source and an oil cooling spray pipe. The oil cooling spray pipe is right opposite to the contact position of the steel pipe cold drawing machine and a steel pipe, a gas collecting hood is arranged above the steel pipe cold drawing machine and connected with one end of a gas extraction pipeline, the other end of the gas extraction pipeline is connected with an air purifier, a negative pressure gas extraction pump is installed on the gas extraction pipeline, and the negative pressure gas extraction pump can generate negative pressure at the gas collecting hood. And air at the contact position of the steel pipe cold drawing machine and the steel pipe is sucked into the air suction pipeline and sent to the air purifier, and the air purifier is connected with outdoor air. The device can purify air, keep the air in a factory fresh, and reduce the influence of the steel pipe treatment process on the environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of negative pressure suction device, specifically related to the negative pressure suction device for steel pipe cold drawing machine. BACKGROUND

[0002] The steel pipe cold drawing machine is an important equipment for improving the mechanical properties of steel pipes and is widely used in the fields of construction and engineering. Its main function is to improve the strength, ductility and stability of steel pipes by stretching them, thereby meeting the strict requirements of steel pipe use structure on materials.

[0003] During the cold drawing process, the steel pipe will undergo high-strength stretching, causing changes in its internal structure. Due to the deformation of the material during stretching, the temperature of the steel pipe will rise significantly. This heating phenomenon not only affects the performance of the steel pipe, but also has a negative impact on the operating environment. When the temperature rises, the stress concentration and heat generated by friction in the local area may cause the temperature to rise to a certain extent.

[0004] In order to ensure the normal operation of the cold drawing machine and the health of workers, effective cooling measures must be taken. In addition, the lubricating oil or other chemicals used in the steel pipe processing process may volatilize in a gaseous state under the influence of high temperature and be released into the air. This gas not only causes an odor in the factory interior environment, but also may have an impact on the health of workers.

[0005] Therefore, the factory has reformed the cold drawing equipment by designing a cooling device and an air suction device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The utility model discloses a negative pressure suction device for steel pipe cold drawing machine based on the technical problems mentioned in the background art.

[0007] The utility model adopts the following technical scheme:

[0008] The negative pressure suction device for steel pipe cold drawing machine comprises a steel pipe cold drawing machine, a steel pipe passing through the steel pipe cold drawing machine, the steel pipe cold drawing machine being capable of clamping and stretching the steel pipe, an oil pump and an oil cooling nozzle being arranged in front of the steel pipe cold drawing machine, an oil inlet of the oil pump being connected with an oil source, the oil inlet being connected with the oil cooling nozzle, the oil cooling nozzle being directly opposite to a contact position of the steel pipe cold drawing machine and the steel pipe, a gas collecting hood being arranged above the steel pipe cold drawing machine, one end of the gas collecting hood being connected with an air suction pipeline, the other end of the air suction pipeline being connected with an air purifier, a negative pressure air suction pump being installed on the air suction pipeline, the negative pressure air suction pump being capable of generating negative pressure at the gas collecting hood, sucking air at the contact position of the steel pipe cold drawing machine and the steel pipe into the air suction pipeline, and sending the air to the air purifier, and the air purifier being connected with outdoor air.

[0009] To optimize the technical scheme, further measures are taken as follows:

[0010] The steel pipe cold-drawing machine is provided with a plurality of the steel pipe cold-drawing machines, and a corresponding plurality of the gas collecting hoods, and the gas suction pipeline is provided with a main pipeline and a plurality of branch pipelines.

[0011] The steel pipe cold-drawing machine comprises a driving structure, a clamping part and a bottom slide, the steel pipe passes through the clamping part, one end of the steel pipe is fixed by an external fixing device, the clamping part can clamp and fix the body of the steel pipe, the clamping part is slidably arranged on the bottom slide, the driving structure can drive the clamping part to slide on the bottom slide, so as to stretch the steel pipe.

[0012] The bottom slide is provided with an oil collecting groove for collecting oil, and the oil cooling spray pipe sprays oil at the contact position of the steel pipe cold-drawing machine and the steel pipe, and the oil drops into the oil collecting groove.

[0013] The steel pipe cold-drawing machine negative pressure suction device further comprises a power starter, the driving structure and the negative pressure air pump are connected with the power starter, and the power starter is used for controlling the power switch of the driving structure and the negative pressure air pump.

[0014] The power starter is provided with a starting circuit, the starting circuit is provided with a negative pressure air pump switch, a plurality of driving structure switches, a live wire end and a zero line end, the live wire end is connected with a power supply live wire, the zero line end is connected with a power supply zero line, each driving structure switch is connected in series with the corresponding driving structure, and then connected in parallel to form a driving parallel unit, and the live wire end, the negative pressure air pump switch, the negative pressure air pump, the driving parallel unit and the zero line end are connected in series.

[0015] The oil sprayed by the oil cooling spray pipe is mineral oil.

[0016] The driving structure is an electric motor.

[0017] The gas collecting hood is a stainless steel hood.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model discloses a steel pipe cold-drawing machine is provided with oil pump and oil cooling spray pipe in front, oil pump import is connected with oil source, oil pump import is connected with oil cooling spray pipe, and oil cooling spray pipe is directly opposite the contact position of steel pipe cold-drawing machine and steel pipe, and through the oil spraying of the contact position of steel pipe cold-drawing machine and steel pipe, the cooling of steel pipe cold-drawing machine is guaranteed, and the normal work of steel pipe cold-drawing machine is guaranteed.

[0020] Because the temperature of the contact position between the steel pipe cold drawing machine and the steel pipe is high, a small part of the oil used for cooling will volatilize into the air in a gaseous manner, causing the factory area to have a pungent smell, the utility model discloses a negative pressure suction device is arranged, air is purified by using the gas collecting hood, the air extraction pipeline, the negative pressure air extraction pump and the air purifier, the factory area air is kept fresh, and the influence of the steel pipe processing process on the environment is reduced.

[0021] In order to prevent the worker from forgetting to open the negative pressure suction device after starting the steel pipe cold drawing machine, the utility model further designs a power starter, only when the negative pressure air extraction pump is closed, the steel pipe cold drawing machine can be normally started, thereby effectively preventing the problem that the negative pressure suction device cannot be normally used by the worker. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the utility model;

[0023] Figure 2 It is a A-A direction view in Figure 1

[0024] Figure 3 It is a circuit schematic view of the power starter;

[0025] The drawings are as follows: the steel pipe cold drawing machine 1, the driving structure 11, the clamping part 12, the bottom sliding seat 13, the steel pipe 2, the oil pump 3, the oil cooling spray pipe 4, the gas collecting hood 5, the air extraction pipeline 6, the main pipeline 61, the branch pipeline 62, the negative pressure air extraction pump 7, the power starter 8, the negative pressure air extraction pump switch 81, the driving structure switch 82, the firewire end 83, the zero line end 84, the air purifier 9. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is described and explained below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application. Based on the examples provided in the present application, all other examples obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present application.

[0027] Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those of ordinary skill in the art, the present application can also be applied to other similar scenarios without making creative efforts based on these drawings. In addition, it can be understood that although the efforts made in this development process can be complex and lengthy, some design, manufacture or production changes based on the technical content disclosed in the present application are only routine technical means for those of ordinary skill in the art related to the content disclosed in the present application, and should not be understood as insufficient disclosure of the present application.​

[0028] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0029] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units (elements) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms “multiple” / “several” used in this application refer to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can indicate: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following objects are in an "or" relationship. The terms "first," "second," and "third" used in this application are merely to distinguish similar objects and do not represent a specific ordering of the objects.

[0030] like Figures 1-2As shown, the negative pressure suction device for the steel pipe cold drawing machine has three parts of main structure, namely the steel pipe cold drawing machine 1, the oil cooling structure and the negative pressure suction structure, the structure of the steel pipe cold drawing machine 1 is prior art, mainly comprising a driving structure 11, a clamping part 12 and a bottom slide 13, the steel pipe 2 passes through the clamping part 12, one end of the steel pipe 2 is fixed by an external fixator, the external fixator can also send the steel pipe 2 forward at a predetermined frequency, the clamping part 12 is a steel clamp with a certain tightness, can clamp and fix the steel pipe 2, or loosen the steel pipe 2, the clamping part 12 is slidably arranged on the bottom slide 13, the driving structure 11 can drive the clamping part 12 to slide on the bottom slide 13, the driving structure 11 is a motor connected with a centrifugal wheel, a centrifugal column on the centrifugal wheel is hinged and matched with the clamping part 12 through a connecting rod, when the motor rotates, the centrifugal column on the centrifugal wheel will move in a circular track, in this process, the clamping part 12 moves forward and backward periodically, so that the steel pipe 2 is stretched and deformed. Figure 1 and Figure 2 The left side is front, the right side is back, when the clamping part 12 moves forward, the steel pipe 2 is loosened, at this time, the external fixator sends the steel pipe 2 backward, when the clamping part 12 moves backward, at this time, the external fixator fixes the steel pipe 2 without moving, the clamping part 12 moves backward while pressing the steel pipe 2 inward, causing the steel pipe 2 to stretch and deform. It needs to be additionally explained that the steel pipe cold drawing machine 1 is a prior structure, not the protection point of the utility model, the main structure of the steel pipe cold drawing machine 1 is described here, so that the reader can clearly understand the installation position of the oil cooling nozzle 4 and the gas collecting cover 5, therefore, the specific structure in the clamping part 12 and the specific structure of the external fixator of the steel pipe 2 will not be further analyzed.

[0031] The oil cooling structure is an improved structure of the utility model, comprising an oil pump 3 and an oil cooling nozzle 4, the oil pump 3 is connected with an oil tank, the oil tank contains mineral oil. The oil pump 3 inlet is connected with the oil cooling nozzle 4, the oil cooling nozzle 4 is opposite to the contact position of the clamping part 12 and the steel pipe 2, after the oil pump 3 is started, the oil cooling nozzle 4 can spray oil to the outer surface of the steel pipe 2, when the clamping part 12 contacts and presses the outer surface of the steel pipe 2, the oil cools the clamping part 12, and the excess oil falls into the oil collecting groove on the bottom slide 13, so as to be recycled.

[0032] The negative pressure suction structure is another improved structure of the utility model, comprising a gas collecting cover 5, an air suction pipeline 6, a negative pressure air suction pump 7, a power starter 8 and an air purifier 9. The gas collecting cover 5 is connected with one end of the air suction pipeline 6, the other end of the air suction pipeline 6 is connected with the air purifier 9, the negative pressure air suction pump 7 is installed on the air suction pipeline 6, the negative pressure air suction pump 7 can generate negative pressure at the gas collecting cover 5, suck the air at the contact position of the steel pipe cold drawing machine 1 and the steel pipe 2 into the air suction pipeline 6, and send it to the air purifier 9, the air purifier 9 is connected with outdoor air. The driving structure 11 and the negative pressure air suction pump 7 are connected with the power starter 8, the power starter 8 is used for controlling the power switch of the driving structure 11 and the negative pressure air suction pump 7.

[0033] When multiple steel pipe cold drawing machines 1 are operating simultaneously in the factory area, multiple production lines can use one negative pressure extraction pump 7 and air purifier 9 at the same time. Specifically, a gas collection hood 5 is installed above each steel pipe cold drawing machine 1, and the extraction pipeline 6 includes a main pipeline 61 and several branch pipelines 62. One end of each branch pipeline 62 is connected to the gas collection hood 5, and the other end of each branch pipeline 62 is connected to the main pipeline 61. The negative pressure extraction pump 7 is installed on the main pipeline 61. Figure 1 In the process, there are 3 cold drawing machines for steel pipes 1, 3 corresponding gas collection hoods 5, and 3 branch pipes 62.

[0034] To ensure that the negative pressure suction structure operates continuously as long as the production line is in operation, this invention improves the power starter 8, such as... Figure 3 As shown, the power starter 8 contains a starting circuit. This starting circuit includes a negative pressure vacuum pump switch 81, several drive structure switches 82, a live wire terminal 83, and a neutral wire terminal 84. The live wire terminal 83 is connected to the live power wire, and the neutral wire terminal 84 is connected to the neutral power wire. The drive structure switches 82 are connected in parallel to form a parallel unit. The live wire terminal 83, the negative pressure vacuum pump switch 81, the parallel unit, and the neutral wire terminal 84 are connected in series. The drive structure switches 82 control the power on / off of the corresponding drive structure 11, and the negative pressure vacuum pump switch 81 controls the power on / off of the negative pressure vacuum pump 7. Figure 3 As can be seen, for the negative pressure suction pump 7 to operate, the negative pressure suction pump switch 81 and any one of the drive structure switches 82 must be closed. Similarly, for the steel pipe cold drawing machine 1 to operate, the negative pressure suction pump switch 81 and the drive structure switch 82 of the steel pipe cold drawing machine 1 must be closed. Therefore, it can be concluded that as long as the steel pipe cold drawing machine 1 is operating, the negative pressure suction structure will inevitably operate. The advantage of this setup is that workers cannot start the steel pipe cold drawing machine 1 without activating the negative pressure suction structure, ensuring clean air in the factory area during operation and reducing the environmental impact of the steel pipe processing process.

[0035] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A negative pressure suction device for a steel pipe cold drawing machine, comprising a steel pipe cold drawing machine (1) through which a steel pipe (2) passes, said steel pipe cold drawing machine (1) being capable of clamping the steel pipe (2) and drawing the steel pipe, characterized in that: The steel pipe cold drawing machine (1) is provided with an oil pump (3) and an oil cooling nozzle (4) in front, the inlet of the oil pump (3) is connected with an oil source, the inlet of the oil pump (3) is connected with the oil cooling nozzle (4), the oil cooling nozzle (4) is opposite to the contact position of the steel pipe cold drawing machine (1) and the steel pipe (2), the steel pipe cold drawing machine (1) is provided with a gas collecting hood (5) above, one end of the gas collecting hood (5) is connected with an air extraction pipeline (6), the other end of the air extraction pipeline (6) is connected with an air purifier (9), a negative pressure air extraction pump (7) is installed on the air extraction pipeline (6), the negative pressure air extraction pump (7) can generate negative pressure at the gas collecting hood (5), air at the contact position of the steel pipe cold drawing machine (1) and the steel pipe (2) is sucked into the air extraction pipeline (6) and is sent to the air purifier (9), the air purifier (9) is connected with outdoor air. ​ 2. The negative pressure suction device for a steel pipe cold drawing machine according to claim 1, characterized by: The number of the steel pipe cold drawing machine (1) is several, each steel pipe cold drawing machine (1) has a steel pipe (2) passing through, correspondingly, the number of the gas collecting hood (5) is also several, each steel pipe cold drawing machine (1) is provided with a gas collecting hood (5) above, the air extraction pipeline (6) comprises a main pipeline (61) and several branch pipelines (62), one end of the branch pipeline (62) is connected with the gas collecting hood (5), the other end of each branch pipeline (62) is connected with the main pipeline (61), and the negative pressure air extraction pump (7) is arranged on the main pipeline (61).

3. The negative pressure suction device for a steel pipe cold drawing machine according to claim 2, characterized by: The steel pipe cold drawing machine (1) comprises a driving structure (11), a clamping part (12) and a bottom sliding base (13), the steel pipe (2) passes through the clamping part (12), one end of the steel pipe (2) is fixed by an external fixing device, the clamping part (12) can clamp and fix the pipe body of the steel pipe (2), the clamping part (12) is slidingly arranged on the bottom sliding base (13), and the driving structure (11) can drive the clamping part (12) to slide on the bottom sliding base (13), so that the clamping part (12) stretches the steel pipe (2).

4. The negative pressure suction device for a steel pipe cold drawing mill according to claim 3, characterized by: The bottom sliding base (13) is formed with an oil collecting groove for collecting oil, and the oil droplets at the contact position of the steel pipe cold drawing machine (1) and the steel pipe (2) sprayed by the oil cooling nozzle (4) fall into the oil collecting groove.

5. The negative pressure suction device for a steel pipe cold drawing machine according to claim 4, characterized by: The negative pressure suction device for the steel pipe cold drawing machine further comprises a power starter (8), the driving structure (11) and the negative pressure air extraction pump (7) are connected with the power starter (8), and the power starter (8) is used for controlling the power switch of the driving structure (11) and the negative pressure air extraction pump (7).

6. The negative pressure suction device for a steel pipe cold drawing machine according to claim 5, characterized by: The power starter (8) is provided with a starting circuit, the starting circuit is provided with a negative pressure air extraction pump switch (81), a plurality of driving structure switches (82), a live wire end (83) and a zero line end (84), the live wire end (83) is connected with a power supply live wire, the zero line end (84) is connected with a power supply zero line, each driving structure switch (82) is connected in series with the corresponding driving structure (11) and then is connected in parallel to form a driving parallel unit, the live wire end (83), the negative pressure air extraction pump switch (81), the negative pressure air extraction pump (7), the driving parallel unit and the zero line end (84) are connected in series.

7. The negative pressure suction device for a steel pipe cold drawing machine according to claim 1, characterized by: The oil liquid sprayed by the oil-cooled nozzle (4) is mineral oil.

8. The negative pressure suction device for a steel pipe cold drawing machine according to claim 3, characterized by: The driving structure (11) is an electric motor.

9. The negative pressure suction device for a steel pipe cold drawing machine according to claim 1, characterized by: The gas collecting cover (5) is a stainless steel cover.

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