Device suitable for integrating barreled dangerous chemical liquid extraction pipe with blow-down pipe

Abstract

The utility model relates to the technical field of dangerous chemical containers, in particular to a device suitable for integrating a barreled dangerous chemical liquid pumping pipe with an emptying pipe, which comprises a cover body, a through hole is arranged on the cover body, an inner cover is arranged in the through hole, a rotary sealing mechanism is arranged between the cover body and the inner cover, a bearing seat is arranged on the cover body, and the bearing seat is arranged on the bearing seat. A bearing is arranged between the bearing seat and the inner cover, a bearing gland is arranged on the bearing seat, an oil seal framework is arranged between the bearing gland and the inner cover, the bearing gland is matched with the cover body to axially limit the bearing, a liquid pumping pipe and a blow-down pipe are arranged on the inner cover, a first one-way valve is arranged on the liquid pumping pipe, and a second one-way valve is arranged on the blow-down pipe. And a second one-way valve is arranged on the blow-down pipe. The problems that in the discharging process of an existing metal barrel, operation is tedious, the working load is large, auxiliary material leakage is likely to happen, and raw material waste and environment pollution are caused can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dangerous chemical containers, in particular to a device suitable for integrating a liquid extraction pipe with a vent pipe for barreled dangerous chemicals. Background Art

[0002] Some auxiliary materials used in polyoxymethylene devices must be loaded and transported in specific metal barrels due to their chemical properties. When unloading at the production site, since some auxiliary materials are flammable and explosive hazardous chemicals, air must be prevented from entering the metal barrels. This is because the entry of air may cause safety accidents and affect the quality of the auxiliary materials in the barrels. Moreover, for volatile auxiliary materials, if they are not effectively sealed during the unloading process, it is easy to cause leakage of auxiliary materials. The leakage of auxiliary materials not only pollutes the environment and produces obvious odors, but these volatile substances may also harm the health of operators.

[0003] However, the metal barrels in the prior art still have the following technical problems:

[0004] 1. The discharge port and the venting port are separately set on the metal barrel. During the unloading process, the discharge pipe and the venting pipe need to be connected separately. The operation process is very cumbersome, which increases the workload of the operator and has low unloading efficiency;

[0005] 2. The discharge port of the metal barrel and the discharge pipe are not tightly sealed, resulting in leakage of auxiliary materials, causing waste and environmental pollution;

[0006] 3. During the unloading process, after the unloading pump stops working, the auxiliary materials in the connecting pipe between the unloading pump and the metal barrel return to the metal barrel along the connecting pipe, resulting in incomplete unloading, causing waste of raw materials and increasing the workload of subsequent processing;

[0007] 4. During the unloading process, if the vent pipe cannot be automatically cut off and the vent valve is forgotten to be closed, the vented inert gas will bring out the auxiliary materials in the metal barrel, causing a strong odor on site, affecting the surrounding environment, and even endangering the health of the operators;

[0008] 5. When the discharge pipe joint is tightened and connected to the discharge port, the discharge pipe joint rotates, causing the discharge pipe connected to the discharge pipe joint to be twisted or even broken. Utility Model Content

[0009] The utility model provides a device suitable for integrating a venting pipe with a liquid extraction pipe for barreled hazardous chemicals, which can solve the problems of complicated operation, heavy workload, easy leakage of auxiliary materials, waste of raw materials and environmental pollution in the existing metal barrel unloading process.

[0010] This application provides the following technical solutions:

[0011] A device suitable for integrating a liquid extraction pipe with a vent pipe for barreled hazardous chemicals comprises a cover body, the cover body is provided with a through hole, an inner cover is provided in the through hole, a rotary sealing mechanism is provided between the cover body and the inner cover, a bearing seat is provided on the cover body, a bearing is provided between the bearing seat and the inner cover, a bearing pressure cover is provided on the bearing seat, an oil seal skeleton is provided between the bearing pressure cover and the inner cover, the bearing pressure cover cooperates with the cover body to axially limit the bearing, the inner cover is provided with a liquid extraction pipe and a vent pipe, the liquid extraction pipe is provided with a first one-way valve, and the vent pipe is provided with a second one-way valve.

[0012] Technical principles and beneficial effects:

[0013] 1. The liquid extraction pipe and the vent pipe are integrated on the inner cover to avoid separate pipe connection, reducing the workload of on-site operators. The liquid extraction pipe and the vent pipe are connected at one time, eliminating the possibility that operators do not connect the vent pipe to save workload, fundamentally eliminating safety, environmental protection, and quality risks, and improving the on-site working environment.

[0014] 2. Through the rotating sealing mechanism, bearings, and oil seal skeleton, the cover structure can be independently rotated 360° (i.e., rotary sealing) while maintaining reliable sealing. During the installation of the device in the metal barrel, the pumping and draining pipes can be effectively prevented from being twisted or even broken, which greatly improves the service life of the pumping and draining pipes and reduces the risk of leakage of the pumping and draining pipes.

[0015] 3. A one-way valve device is installed on the liquid extraction pipe to avoid waste caused by backflow of materials and reduce the subsequent processing workload and processing costs.

[0016] 4. A second one-way valve is installed on the vent pipe. When there is no need to add venting balance inert gas, the self-locking function can be realized to prevent the venting inert gas from bringing out the auxiliary materials in the metal barrel, avoiding the impact on the environment and ensuring the health of the operators.

[0017] 5. Both the first check valve and the second check valve can be mechanical check valves, which are easy to maintain and repair, do not need to set up a control system, and save on-site space.

[0018] 6. The device is suitable for integrating the venting pipe with the extraction pipe of barreled hazardous chemicals. It is simple to operate, safe, environmentally friendly, reduces material waste, has high practical value, and has good economic benefits.

[0019] In summary, compared with the prior art, the device suitable for the integrated vent pipe of the liquid extraction pipe for barreled hazardous chemicals is simple to operate, has high work efficiency, low risk of auxiliary material leakage, protects the environment, is easy to maintain, and reduces costs.

[0020] Furthermore, the through hole of the cover body is a stepped hole, the upper end is a large diameter section, and the lower end is a small diameter section, and a rotating sealing mechanism is provided in the large diameter section of the through hole of the cover body.

[0021] Beneficial effects: The stepped hole design of the cover body cooperates with the rotary sealing mechanism to improve the sealing performance, facilitate maintenance, improve production efficiency and reduce costs.

[0022] Furthermore, the rotating sealing mechanism includes a machine seal holder, a machine seal dynamic ring, and a machine seal static ring. The machine seal holder is fixedly mounted on the outer peripheral wall of the inner cover, a machine seal dynamic ring is provided below the machine seal holder, the machine seal dynamic ring is sleeved on the inner cover and slidably cooperates with the inner cover, a dynamic ring sealing ring is provided between the machine seal dynamic ring and the inner cover, a spring is provided between the machine seal dynamic ring and the machine seal holder, and under the action of the spring, the machine seal dynamic ring is tightly attached to the machine seal static ring below the machine seal dynamic ring, the machine seal static ring is located on the cover body, and a static ring sealing ring is provided between the machine seal static ring and the cover body.

[0023] Beneficial effect: The rotary seal between the cover body and the inner cover is achieved through the mechanical seal retainer, mechanical seal dynamic ring, mechanical seal static ring and spring. Under the action of the spring, the mechanical seal dynamic ring and the mechanical seal static ring can maintain good contact between the sealing surfaces, achieve self-adjustment, and avoid reduced sealing effect due to wear of components.

[0024] Furthermore, a dynamic ring sealing ring installation groove is provided on the side of the mechanical seal dynamic ring opposite to the inner cover.

[0025] Furthermore, a static ring sealing ring installation groove is provided on the side of the mechanical seal static ring opposite to the cover body.

[0026] Beneficial effects: The sealing ring installation groove can accurately position the sealing ring to ensure the correct fit between the sealing ring and the sealing surface. At the same time, it protects the sealing ring from mechanical damage and extends the service life of the sealing ring. It makes the replacement and maintenance of the sealing ring more convenient and quick.

[0027] Furthermore, the outer peripheral wall of the cover body is stepped, with the upper end being the large diameter end and the lower end being the small diameter end, a sealing gasket is provided on the stepped surface between the large diameter end and the small diameter end, and an external thread is provided on the outer peripheral wall of the small diameter end.

[0028] Beneficial effects: easy to install, and can provide a more reliable sealing effect to prevent leakage.

[0029] Furthermore, the inner cover is provided with a groove opening downward.

[0030] Beneficial effect: The inert gas can diffuse quickly into the metal barrel through the groove, thus improving production efficiency and saving material costs.

[0031] Furthermore, a first one-way valve is provided at the port of the feed end of the liquid extraction pipe, the gas outlet end of the vent pipe is connected to the groove, and a second one-way valve is provided near the gas outlet end.

[0032] Beneficial effects: The first one-way valve is set at the port of the feed end of the liquid extraction pipe, which can unload the auxiliary materials in the metal barrel as much as possible at one time, avoiding the waste caused by the backflow of liquid, and reducing the workload and cost of subsequent processing. The second one-way valve is set near the gas outlet end of the vent pipe, which can effectively avoid the discharge of inert gas and protect the environment and health.

[0033] Furthermore, the diameter of the inner circumferential wall of the bearing seat is larger than the diameter of the large diameter section of the cover body through hole, and the diameter of the inner circumferential wall of the bearing pressure cover is smaller than the diameter of the inner circumferential wall of the bearing seat.

[0034] Beneficial effect: The cover body and the bearing cover can cooperate to axially limit the bearing inside the bearing seat.

[0035] Furthermore, the diameter of the vent pipe on the side of the second one-way valve on the vent pipe relative to the inner cover is larger than the diameter of the vent pipe on the other side of the second one-way valve.

[0036] Beneficial effect: The vent pipe can be adapted to meet the requirements of different sizes, increasing the versatility of the vent pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The utility model is a structural cross-sectional view of a device suitable for integrating a liquid extraction pipe with a vent pipe for barreled hazardous chemicals. DETAILED DESCRIPTION

[0038] The following is further described in detail through specific implementation methods:

[0039] The marks in the drawings of the specification include: cover body 1, inner cover 2, rotary sealing mechanism 3, machine seal retainer 301, spring 302, machine seal dynamic ring 303, dynamic ring sealing ring 304, machine seal static ring 305, static ring sealing ring 306, bearing seat 4, bearing 5, bearing pressure cover 6, oil seal skeleton 7, liquid extraction pipe 8, vent pipe 9, first one-way valve 10, second one-way valve 11.

[0040] Embodiment 1

[0041] like Figure 1As shown, a device suitable for integrating a venting pipe with a liquid extraction pipe for barreled hazardous chemicals comprises a cover body 1, a through hole is provided on the cover body 1, an inner cover 2 is provided in the through hole, and a rotary sealing mechanism 3 is provided between the cover body 1 and the inner cover 2. The through hole of the cover body 1 is a stepped hole, with a large diameter section at the upper end and a small diameter section at the lower end. The rotary sealing mechanism 3 is provided in the large diameter section of the through hole of the cover body 1, and the rotary sealing mechanism 3 comprises a mechanical seal holder 301, a mechanical seal dynamic ring 303, and a mechanical seal static ring 305. The mechanical seal holder 301 is fixedly mounted on the outer peripheral wall of the inner cover 2 by conventional fixing methods such as welding and interference fit. A mechanical seal dynamic ring 303 is provided below the mechanical seal holder 301, and the mechanical seal dynamic ring 303 is sleeved on the inner cover 2 and is in contact with the inner cover 2. The inner cover 2 is slidably matched, a dynamic ring sealing ring 304 is provided between the mechanical seal dynamic ring 303 and the inner cover 2, a spring 302 is provided between the mechanical seal dynamic ring 303 and the mechanical seal retainer 301, and the mechanical seal dynamic ring 303 is tightly attached to the mechanical seal static ring 305 below the mechanical seal dynamic ring 303 under the action of the spring 302, the mechanical seal static ring 305 is located on the stepped surface between the large diameter section and the small diameter section of the through hole of the cover body 1, and a static ring sealing ring 306 is provided between the mechanical seal static ring 305 and the cover body 1. A dynamic ring sealing ring installation groove is provided on the side of the mechanical seal dynamic ring 303 opposite to the inner cover 2, and a dynamic ring sealing ring 304 is installed in the dynamic ring sealing ring installation groove. A static ring sealing ring 306 is installed in the static ring sealing ring installation groove on the side of the mechanical seal static ring 305 opposite to the cover body 1. An annular bearing seat 4 is provided on the upper end surface of the cover body 1, a bearing 5 is provided between the bearing seat 4 and the inner cover 2, an annular bearing pressure cover 6 is provided on the upper end surface of the bearing seat 4, an oil seal skeleton 7 is provided between the bearing pressure cover 6 and the inner cover 2, the bearing pressure cover 6 cooperates with the cover body 1 to limit the axial position of the bearing 5, and the bearing seat 4 and the bearing pressure cover 6 are fixedly connected to the cover body 1 by bolts. The outer peripheral wall of the cover body 1 is stepped, the upper end is the large diameter end, and the lower end is the small diameter end. A sealing gasket is provided on the stepped surface between the large diameter end and the small diameter end, and an external thread is provided on the outer peripheral wall of the small diameter end. The diameter of the outer peripheral wall of the bearing seat 4 and the bearing pressure cover 6 is the same as the diameter of the large diameter end of the outer peripheral wall of the cover body 1, the diameter of the inner peripheral wall of the bearing seat 4 is larger than the aperture of the large diameter section of the through hole of the cover body 1, and the diameter of the inner peripheral wall of the bearing pressure cover 6 is smaller than the diameter of the inner peripheral wall of the bearing seat 4. The inner cover 2 is provided with a liquid extraction pipe 8 and a venting pipe 9. The liquid extraction pipe 8 is provided with a first one-way valve 10, and the venting pipe 9 is provided with a second one-way valve 11. The inner cover 2 is provided with a groove with an opening facing downward. One end of the liquid extraction pipe 8 passes through the groove provided on the inner cover 2, and is used to suck the auxiliary materials in the metal barrel. The end of the liquid extraction pipe 8 located in the metal barrel is the feed end. The first one-way valve 10 is provided at the port of the feed end to prevent the backflow of the sucked liquid. The other end of the liquid extraction pipe 8 extends out of the inner cover 2 for connecting a suction pump. The gas outlet end of the venting pipe 9 is connected to the groove provided on the inner cover 2, and a second one-way valve 11 is provided near the gas outlet end. The other end of the venting pipe 9 extends out of the inner cover 2 for connecting an inert gas. The second one-way valve 11 is used to control the inert gas to enter or stop entering the inner cover 2.

[0042] The method of use is as follows: when the auxiliary materials in the metal barrel are discharged, the device for the integrated venting pipe of the barreled hazardous chemicals is fixedly installed on the discharge port of the metal barrel through the external thread provided on the outer peripheral wall of the cover body 1 and the internal thread of the discharge port of the metal barrel. During the installation process, the cover body 1 rotates, the inner cover 2 remains stationary, and the rotating sealing mechanism 3 and the oil seal skeleton 7 ensure the sealing during the installation process. During the discharge process, the liquid extraction pipe 8 on the inner cover 2 is connected to the suction pump. The suction pump works, so that the first one-way valve 10 on the liquid extraction pipe 8 in the metal barrel is opened due to the pressure difference, so that the auxiliary materials in the metal barrel are moved along the liquid extraction pipe 8 to the designated position (or container). As the amount of auxiliary materials in the barrel decreases, a pressure difference is formed inside and outside the metal barrel. The pressure difference further causes the second one-way valve 11 on the venting pipe 9 on the inner cover 2 to open, so that the inert gas connected to the venting pipe 9 enters the metal barrel, so that the pressure inside and outside the metal barrel is kept in a balanced state. When the suction pump stops working, the first one-way valve 10 on the suction pipe 8 is closed to prevent the suction liquid from flowing back. The one-way valve on the vent pipe 9 also returns to the closed state due to the pressure difference, cutting off the inert gas supply in time, and the internal and external pressures of the metal barrel reach a balanced state again.

[0043] Embodiment 2

[0044] The difference between this embodiment and the first embodiment is that a vent pipe 9 is provided on the inner cover 2, a second one-way valve 11 is provided on the vent pipe 9, and the diameter of the vent pipe 9 on the side of the second one-way valve 11 opposite to the inner cover 2 is larger than the diameter of the vent pipe 9 on the other side of the second one-way valve 11.

[0045] The above is only an embodiment of the utility model. The utility model is not limited to the field involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A device suitable for integrating a vent pipe with a liquid extraction pipe for barreled hazardous chemicals, characterized in that: It includes a cover body, a through hole is provided on the cover body, an inner cover is provided in the through hole, a rotary sealing mechanism is provided between the cover body and the inner cover, a bearing seat is provided on the cover body, a bearing is provided between the bearing seat and the inner cover, a bearing pressure cover is provided on the bearing seat, an oil seal skeleton is provided between the bearing pressure cover and the inner cover, the bearing pressure cover cooperates with the cover body to limit the bearing axially, a liquid extraction pipe and a drain pipe are provided on the inner cover, a first one-way valve is provided on the liquid extraction pipe, and a second one-way valve is provided on the drain pipe.

2. The device for integrating a drain pipe with a barreled hazardous chemical extraction pipe according to claim 1 is characterized in that: The through hole of the cover body is a stepped hole, the upper end of which is a large-diameter section, and the lower end of which is a small-diameter section. A rotating sealing mechanism is arranged in the large-diameter section of the through hole of the cover body.

3. The device for integrating a drain pipe with a barreled hazardous chemical extraction pipe according to claim 1 is characterized in that: The rotary sealing mechanism includes a machine seal holder, a machine seal dynamic ring, and a machine seal static ring. The machine seal holder is fixedly mounted on the outer peripheral wall of the inner cover, a machine seal dynamic ring is provided below the machine seal holder, the machine seal dynamic ring is sleeved on the inner cover and slidably cooperates with the inner cover, a dynamic ring sealing ring is provided between the machine seal dynamic ring and the inner cover, a spring is provided between the machine seal dynamic ring and the machine seal holder, the machine seal dynamic ring is tightly attached to the machine seal static ring below the machine seal dynamic ring under the action of the spring, the machine seal static ring is located on the cover body, and a static ring sealing ring is provided between the machine seal static ring and the cover body.

4. The device for integrating a discharge pipe with a barreled hazardous chemical extraction pipe according to claim 3 is characterized in that: A dynamic ring sealing ring installation groove is provided on one side of the mechanical seal dynamic ring opposite to the inner cover.

5. The device for integrating a discharge pipe with a barreled hazardous chemical extraction pipe according to claim 3 is characterized in that: A static ring sealing ring installation groove is provided on one side of the mechanical seal static ring opposite to the cover body.

6. The device for integrating a drain pipe with a barreled hazardous chemical extraction pipe according to claim 1 is characterized in that: The outer peripheral wall of the cover body is stepped, with the upper end being a large diameter end and the lower end being a small diameter end. A sealing gasket is provided on the stepped surface between the large diameter end and the small diameter end, and an external thread is provided on the outer peripheral wall of the small diameter end.

7. The device for integrating a liquid extraction pipe with a vent pipe for barreled hazardous chemicals according to claim 1 is characterized in that: The inner cover is provided with a groove opening downward.

8. The device for integrating a discharge pipe with a barreled hazardous chemical extraction pipe according to claim 7 is characterized in that: A first one-way valve is provided at the port of the feed end of the liquid extraction pipe, and the gas outlet end of the vent pipe is communicated with the groove, and a second one-way valve is provided near the gas outlet end.

9. The device for integrating a discharge pipe with a barreled hazardous chemical extraction pipe according to claim 8 is characterized in that: The diameter of the inner circumferential wall of the bearing seat is larger than the diameter of the large diameter section of the cover body through hole, and the diameter of the inner circumferential wall of the bearing pressure cover is smaller than the diameter of the inner circumferential wall of the bearing seat.

10. The device for integrating a liquid extraction pipe with a vent pipe for barreled hazardous chemicals according to claim 9 is characterized in that: The diameter of the vent pipe on the side of the second one-way valve on the vent pipe relative to the inner cover is larger than the diameter of the vent pipe on the other side of the second one-way valve.

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