A suspended high-pressure enclosed cleaning device

Abstract

The present invention relates to a suspended high-pressure enclosed cleaning device, comprising a flushing valve and a pressure plate valve. The flushing valve is fixedly connected to the upper end of a polymerization kettle, and the inner cavity of the flushing valve is connected to the inner cavity of the polymerization kettle. A high-pressure conduit is installed in the flushing valve for telescopic adjustment. A high-pressure nozzle is installed at the lower end of the high-pressure conduit, and the high-pressure nozzle can enter and exit the inner cavity of the polymerization kettle. A pressure plate valve is installed between the flushing valve and the polymerization kettle to control the opening or closing of the passage between the flushing valve and the polymerization kettle. The flushing stroke, nozzle operating speed, flushing pressure, flushing flow rate, and flushing key locations of this device can all be selected and can be set according to cleaning needs, thereby achieving good cleaning effects and improving product quality.

Description

Technical Field

[0001] The invention belongs to the field of cleaning devices, and relates to a sealed cleaning device in a polymerization kettle, in particular to a suspended high-pressure sealed cleaning device. Background Art

[0002] After a polymerization process is completed, the inner cavity of the polymerization kettle needs to be cleaned to ensure that the next reaction material is not contaminated. Since the polymerization kettle is a closed space, the cleaning equipment has high requirements. The cleaning equipment must be effective and must not affect the sealing of the polymerization kettle to ensure its performance.

[0003] The existing cleaning device can be found in the previously applied patent (CN215655960U, a spray valve nozzle sealing structure), which uses a telescopic steel pipe to drive the nozzle into the kettle, and a sealing structure is set at the end of the nozzle. The length of this structure that the nozzle can enter the kettle is limited by the telescopic steel pipe, and the position of the nozzle is fixed and cannot be adjusted. The cleaning efficiency is low, the cleaning ability is not ideal, and the sealing of the structure is affected by the sealing material, the service life is short, and there are safety hazards such as leakage points. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a suspended high-pressure closed cleaning device that can reduce safety hazards, improve production efficiency and improve cleaning quality.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] A suspended high-pressure closed cleaning device is characterized in that it includes a flushing valve and a pressure plate valve. The flushing valve is fixedly connected to the upper end of the polymerization kettle. The inner cavity of the flushing valve is connected to the inner cavity of the polymerization kettle. A high-pressure conduit is installed in the flushing valve for telescopic adjustment. A high-pressure nozzle is installed at the lower end of the high-pressure conduit. The high-pressure nozzle can enter and exit the inner cavity of the polymerization kettle; a pressure plate valve is installed between the flushing valve and the polymerization kettle, which can control the opening or closing of the channel between the flushing valve and the polymerization kettle.

[0007] Moreover, the upper end of the high-pressure conduit extends to the outside of the main valve body and is connected to a conduit driving component. The conduit driving component is a winch assembly. The winch assembly includes a wheel, a guide wheel and a conduit sealing assembly. The wheel is set on an external frame, and the high-pressure conduit is wrapped around the wheel. The wheel is equipped with a drive motor that can control the rotation of the wheel to retract and extend the high-pressure conduit.

[0008] Moreover, a swing cylinder is installed on the outer side of the middle part of the valve body of the flushing valve. The piston rod of the swing cylinder passes through the side wall of the flushing valve body. The end of the piston rod is connected to a swing sleeve, which is slidably mounted on the high-pressure conduit.

[0009] Moreover, a conduit sealing assembly is arranged on the periphery of the high-pressure conduit at the upper end of the valve body of the flushing valve. The conduit sealing assembly comprises a plurality of lip seals, and an inflatable chamber is arranged in the middle of the plurality of lip seals.

[0010] Moreover, the pressure plate valve includes a plate valve body, a plunger, a cylinder and a pressure plate. The plate valve body is a cylindrical structure that is coaxially sealed with the valve body of the flushing valve. A plunger channel is vertically arranged in the middle of the plate valve body. A plunger is installed in the plunger channel as a driving guide. One end of the plunger extends to the outside of the plunger channel to connect to the cylinder. A pressure plate is installed at the other end located in the plunger channel. The cylinder drives the pressure plate to move in the plunger channel to open or close the through hole for the high-pressure conduit and the high-pressure nozzle to pass through.

[0011] Moreover, a pressure plate is provided on both the upper and lower sides of the plunger for guidance and adjustment, and the pressure plates on the upper and lower sides can double-close the channel in the plate valve body.

[0012] Moreover, a tension spring with a guide column is provided between the pressure plate and the plunger on both sides, and a pair of rocker arms are symmetrically hinged between the pressure plate and the plunger on both sides.

[0013] Moreover, a plate valve seal is provided on the sliding matching surface between the cylinder plunger and the plunger channel, and a multi-layer lip seal is provided in the sealing cavity of the plate valve seal.

[0014] Moreover, an inspection window is provided in the middle of the main valve body, and an inspection window cover is installed to seal the inspection window. A sealing gasket is installed at the connection position between the inspection window cover and the flushing valve body, and a plurality of screws are evenly spaced around the inspection window cover to connect to the flushing valve body.

[0015] Moreover, an observation window is installed at the lower part of the main valve body.

[0016] The advantages and positive effects of the present invention are:

[0017] 1. This device has a simple and reliable structure, few leakage points, simple operation, can be seamlessly connected with DCS, safe and reliable, and reduces safety hazards.

[0018] 2. The device is easy to operate and can adjust the nozzle height according to needs, thereby improving production efficiency and achieving good cleaning effect.

[0019] 3. The flushing stroke, nozzle running speed, flushing pressure, flushing flow rate and flushing key positions of this device can all be selected and set according to the cleaning needs, which has a good cleaning effect and improves product quality.

[0020] 4. The valve plate structure of the pressure plate valve of this device has good sealing performance. An internal water-filled structure is set inside to use water pressure to seal the internal channel of the valve body, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of this device.

[0022] Figure 2 It is a schematic diagram of the internal structure of this device.

[0023] Figure 3 yes Figure 2 A partial enlarged view of part B in the middle.

[0024] Figure 4 yes Figure 2 A partial enlarged view of part A in the middle.

[0025] Reference numerals: 1. winch assembly; 101. wheel disc; 102. guide wheel; 103. guide bracket; 104. lip seal; 105. inflatable chamber; 2. flushing valve; 201. high-pressure conduit; 202. valve body; 203. swing sleeve; 204. swing cylinder; 205. high-pressure nozzle; 3. inspection window cover; 4. observation window; 5. pressure plate valve; 501. pressure plate; 502. plunger; 503. plunger Channel; 504, plate valve seal; 5041, end cover; 5042, lip seal; 5043, sealing sleeve; 5044, pressure cover; 505, support rod; 506, plate valve cylinder; 507, plate valve body; 508, pressure plate seal assembly; 5081, fixing seat; 5082, rocker arm; 5083, tension spring; 5084, guide wheel; 5085, sealing rubber ring; 509, inlet; 510, pressure gauge. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely illustrative and non-restrictive, and the scope of protection of the present invention cannot be limited thereto.

[0027] The horizontal and vertical directions mentioned in this embodiment are used to describe the relative positions of the structures and do not limit the actual installation direction of the structures.

[0028] See attached Figure 1 As shown, a suspended high-pressure closed cleaning device includes a flushing valve 2, a winch assembly 1 and a pressure plate 501 valve 5. The flushing valve 2 is fixed at the upper end of the polymerization kettle, and the flushing valve 2 is connected to the inner cavity of the polymerization kettle. The winch assembly 1 is installed at the upper end of the flushing valve 2, and the pressure plate 501 valve 5 is installed between the flushing valve 2 and the polymerization kettle.

[0029] The flushing valve 2 is equipped with a high-pressure nozzle 205 and a high-pressure conduit 201. One end of the high-pressure conduit 201 is connected to the high-pressure nozzle 205. The other end of the high-pressure conduit 201 extends outside the flushing valve 2, is wrapped around a winch assembly 1, and is connected to a water source. The winch assembly 1 can control the length and speed of the high-pressure conduit 201. The winch assembly 1 drives the high-pressure conduit 201 to the high-pressure nozzle 205 to enter the polymerization kettle for spray cleaning, or to exit the polymerization kettle and be retracted into the flushing valve 2. Depending on the required movement distance of the high-pressure conduit 201, the winch assembly 1 can also be replaced with other conduit-driving components that can drive the pipeline.

[0030] A pressure plate 501 valve 5 is installed between the flushing valve 2 and the polymerization kettle. The pressure plate 501 valve 5 can close or open the channel between the flushing valve 2 and the polymerization kettle.

[0031] An inspection window is provided in the middle of the flush valve 2. The inspection window is sealed with an inspection window cover 3. A sealing gasket is installed at the connection between the inspection window cover 3 and the flush valve 2. Multiple screws are evenly spaced around the inspection window cover 3 to connect to the flush valve 2 to ensure the sealing of the inspection window. When maintenance is required, the inspection window cover can be removed to maintain the internal structure of the flush valve 2. The outer diameter of the high-pressure conduit 201 is larger than the outer diameter of the connector between the nozzle and the conduit. The outer diameter can be removed to facilitate the replacement of the sealing ring. When the upper part of the sealing ring needs to be repaired, the inspection window can be opened, the nozzle can be removed from the maintenance compartment, the high-pressure conduit 201 can be pulled out, and the seal can be replaced.

[0032] An observation window 4 is installed at the lower part of the flush valve 2, through which the internal state of the flush valve 2 can be seen.

[0033] For the specific structure, please refer to the attached Figure 2 As shown,

[0034] The winch assembly includes a wheel 101, a guide wheel 102 and a catheter sealing assembly 104. The wheel is set on an external frame (the frame is not shown in the figure, and the installation position of the wheel is selected according to the actual installation situation). The high-pressure catheter 201 is wrapped around the wheel 101. The wheel 101 is connected to a drive motor. The drive motor controls the rotation of the wheel so that the high-pressure catheter can be retracted and extended; the external end of the high-pressure catheter is connected to a water source (not shown in the figure).

[0035] In order to facilitate the movement of the high-pressure catheter, a guide bracket 103 is fixed on the upper end of the valve body of the flushing valve. A guide wheel 102 is installed on the guide bracket 103. The guide wheel 102 is set on one side of the deflection wheel disc. The guide wheel guides and supports the high-pressure catheter 201 to prevent the high-pressure catheter 201 from being damaged.

[0036] The high-pressure conduit 201 of the winch part has a built-in magnetic positioning ring, and the wheel 101 is provided with a magnetic switch. The magnetic positioning ring sends a position signal to the magnetic switch.

[0037] See attached Figure 3 As shown, the flush valve 2 has a through-hole at the center of its upper end, through which the high-pressure conduit 201 passes. A conduit sealing assembly is installed at the outer periphery of the through-hole to ensure the sealing of the valve body 202. The conduit sealing assembly comprises a multi-stage seal 104. An inflatable chamber 105 is located in the center of the multi-stage seal 104. This chamber 105 has an optional external air inlet and is equipped with an emergency compression function. During normal operation, it does not contribute to sealing or only provides a light seal.

[0038] Since the high-pressure conduit needs to be lightly lubricated, an oil storage box is installed at the inlet of the conduit, which is not shown in this embodiment. The oil storage box lightly lubricates the outer wall of the conduit.

[0039] The flush valve 2 includes a valve body 202, a high-pressure conduit 201, and a high-pressure nozzle 205. A vertical channel is formed in the valve body 202 of the flush valve 2. The high-pressure conduit 201 is installed in the channel of the valve body 202 of the flush valve 2. The high-pressure nozzle 205 is installed at one end of the high-pressure conduit 201. The high-pressure conduit 201 drives the high-pressure nozzle 205 to move along the channel of the valve body 202 of the flush valve 2. The other end of the high-pressure conduit 201 extends outside the flush valve 2 and is connected to a water source.

[0040] A swing cylinder 204 is installed on the outer side of the middle part of the valve body 202 of the flushing valve 2. The piston rod of the swing cylinder 204 passes through the side wall of the valve body 202 of the flushing valve 2. The end of the piston rod is connected to the swing sleeve 203 outside the high-pressure conduit 201. When the swing cylinder 204 is opened, it drives the swing sleeve 203 to make the high-pressure conduit 201 swing laterally, thereby driving the high-pressure nozzle 205 to swing. A sealing assembly is provided between the swing cylinder 204 and the valve body 202 to ensure the sealing of the installation. The above-mentioned swing cylinder 204 is equipped with a two-position three-way solenoid valve, and the piston of the swing cylinder 204 is equipped with an emergency clamping device. The guide rod of the swing cylinder 204 is equipped with a sealing surface, which can play a sealing role when the cylinder returns to its position.

[0041] To facilitate installation and maintenance, the flush valve 2 of this embodiment is composed of upper and lower coaxial valve bodies 202 connected by flanges. The overall length of the valve body 202 can be adjusted according to actual installation needs.

[0042] The pressure plate 501 valve 5 includes a plate valve body 507, a plunger 502, a plate valve cylinder 506 and a pressure plate 501. The plate valve body 507 is a cylindrical structure that is coaxially sealed with the valve body 202 of the flushing valve 2. A plunger 502 channel is vertically arranged in the middle of the plate valve body 507. The plunger 502 channel located in the plate valve body 507 is provided with a through hole for the high-pressure conduit 201 and the high-pressure nozzle 205 to pass through; a plunger 502 is installed in the plunger 502 channel as a driving guide, one end of the plunger 502 extends to the outside of the plunger 502 channel and is fixedly connected to the piston end of a plate valve cylinder 506, and the other end of the plunger 502 located in the plunger 502 channel is provided with a pressure plate 501. The plate valve cylinder 506 drives the pressure plate 501 to move in the plunger 502 channel, thereby opening or closing the through hole for the high-pressure conduit 201 and the high-pressure nozzle 205 to pass through. The plate valve cylinder 506 adopts pipeline gas source, and the gas source protector keeps the plate valve cylinder 506 in its original position when the pipeline gas supply is lost. The pressure plate 501 valve 5 pull rod and the plate valve cylinder 506 main shaft are connected by a clamp, which is convenient for replacing the sealing ring.

[0043] See attached Figure 4 As shown, in order to ensure sealing, a plate valve seal 504 is provided on the sliding mating surface between the cylinder plunger 502 and the plunger 502 channel. The plate valve seal 504 includes an end cover 5041, a sealing sleeve 5043, a lip seal 5042 and a pressure cover 5044. The end of the plunger 502 channel is sealed with an end cover 5041. The middle of the end cover 5041 has a plunger 502 hole for the plunger 502 to pass through. A sealing sleeve 5043 is sealed and fixed in the plunger 502 hole. A sealing cavity between the sealing sleeve 5043 and the plunger 502 is provided with multiple layers of lip seals 5042. A pressure cover 5044 is sealed and fixed at the axial outer end of the sealing sleeve 5043. The seal maintains a pressure of more than 0.8 MPa, which is higher than the cylinder pressure, and can be equipped with an emergency clamping flange.

[0044] In order to ensure the coaxial stability of the driving plunger 502 of the plate valve cylinder 506, a plurality of support rods 505 are provided between the plate valve cylinder 506 and the outer wall of the plunger 502 channel.

[0045] A guide groove for guiding the movement of the pressure plate 501 is provided in the plunger 502 channel. When the flushing valve 2 is switched on and off, the pressure plate 501 slides in the guide groove and closes the valve when it reaches the top.

[0046] In order to improve the sealing performance of the pressure plate 501, a pressure plate 501 sealing assembly is provided at the mounting end of the plunger 502 and the pressure plate 501. The pressure plate 501 sealing assembly includes a tension spring 5083, a rocker 5082 and a fixing seat 5081. A pressure plate 501 is installed on both sides of the plunger 502 corresponding to the through hole. A tension spring 5083 is provided between the pressure plate 501 and the plunger 502. In this embodiment, the tension spring 5083 is a tension spring 5083 with a guide column, and the tension spring 5083 is provided in two groups at intervals; on both sides of the plunger 502 A pair of rocker arms 5082 are hinged between the pressure plate 501. Specifically, one end of the rocker arm 5082 is hinged on the plunger 502 through a horizontal axis perpendicular to the plunger 502, and the other end of the rocker arm 5082 is hinged on a fixed seat 5081 set in the pressure plate 501. The rocker arms 5082 on both sides of the plunger 502 are symmetrically arranged, and the angle between the rocker arms 5082 is less than 180 degrees. The distance for the pressure plate 501 to reach the sealing point position is less than the stroke of the cylinder, so that the cylinder continuously provides a pressing force for the pressure plate 501 and the cylinder continuously supplies air.

[0047] To further ensure the sealing of the pressure plate, the plunger channel is provided with an inlet 509, which can be filled with air or water, thereby increasing the pressure in the plunger channel, causing the pressure plates on both sides to abut the inner wall of the plunger channel, ensuring the sealing of the pressure plate position. The plunger channel is also provided with a pressure gauge 510 to monitor the pressure in the plunger channel in real time. When the inlet is a water inlet, clean water is injected to serve as the internal pressure of the double seal of the pressure plate, which can also flush the sealing surface when the pressure plate is opened.

[0048] A guide wheel 5084 is installed on the inner side of the pressure plate 501 on the side away from the cylinder. The guide wheel 5084 can be limited to abut against the inner wall of the plate valve body 507 to limit the position of the pressure plate 501. At the same time, the friction during abutment is reduced by rotating the guide wheel 5084.

[0049] In order to ensure the sealing performance of the pressure plate 501, a sealing rubber ring 5085 is provided on the pressure plate 501 at the position where it contacts the inner wall of the channel of the plunger 502.

[0050] Steps:

[0051] 1. After the polymerization kettle is discharged, there is no pressure in the kettle, and a signal is given to the cylinder solenoid valve to open the pressure plate valve.

[0052] 2. After the pressure plate valve is opened, a signal is given to the winch.

[0053] 3. Rotate the capstan downward and lower the nozzle into the kettle.

[0054] 4. The nozzle enters the kettle (N meters) and starts working. When it reaches the swing position, the swing cylinder receives the signal and starts working, pushing the high-pressure tube to move the nozzle horizontally.

[0055] 5. After the nozzle reaches the predetermined position, it returns to its original position in the maintenance chamber.

[0056] 6. After receiving the signal, the pressure plate valve cylinder closes the pressure plate valve and the work is completed.

[0057] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A suspended high-pressure enclosed cleaning device, characterized in that: The invention comprises a flushing valve (2) and a pressure plate valve (5), wherein the flushing valve (2) is fixedly connected to the upper end of the polymerization kettle, the inner cavity of the flushing valve (2) is communicated with the inner cavity of the polymerization kettle, a high-pressure conduit (201) is installed in the flushing valve (2) for telescopic adjustment, a high-pressure nozzle (205) is installed at the lower end of the high-pressure conduit (201), and the high-pressure nozzle (205) can enter and exit the inner cavity of the polymerization kettle; the upper end of the high-pressure conduit (201) extends to the outside of the main valve body (202) and is connected to a conduit driving component, the conduit driving component is a winch assembly (1), the winch assembly (1) comprises a wheel (101), a guide wheel (102) and a conduit sealing assembly, the wheel (101) is arranged on an external frame, the high-pressure conduit (201) is wound on the wheel (101), and the wheel (101) is installed with a driving motor capable of controlling the wheel (101) to rotate so as to retract and extend the high-pressure conduit (201); A pressure plate valve (5) is installed between the flushing valve (2) and the polymerization kettle, which can control the opening or closing of the channel between the flushing valve (2) and the polymerization kettle. The pressure plate valve (5) includes a plate valve body (507), a plunger (502), a plate valve cylinder (506) and a pressure plate (501). The plate valve body (507) is a cylindrical structure coaxially sealed with the valve body (202) of the flushing valve (2). A plunger (502) is vertically arranged in the middle of the plate valve body (507). A plunger (502) is installed in the plunger (502) channel to drive the guide. One end of the plunger (502) extends to the outside of the plunger (502) channel to connect to the plate valve cylinder (506). A pressure plate (501) is installed at the other end located in the plunger (502) channel. The plate valve cylinder (506) drives the pressure plate (501) to move in the plunger (502) channel to open or close the through hole for the high-pressure conduit (201) and the high-pressure nozzle (205) to pass through.

2. The suspended high-pressure enclosed cleaning device according to claim 1, characterized in that: A swing cylinder (204) is installed on the outer side of the middle part of the valve body of the flushing valve (2). The piston rod of the swing cylinder (204) passes through the side wall of the valve body of the flushing valve (2). The end of the piston rod is connected to a swing sleeve (203). The swing sleeve (203) is slidably mounted on the high-pressure conduit (201).

3. The suspended high-pressure enclosed cleaning device according to claim 1, characterized in that: A conduit sealing assembly is provided on the periphery of the high-pressure conduit (201) at the upper end of the valve body of the flushing valve (2). The conduit sealing assembly comprises a plurality of lip seals (5042), and an air-filled chamber (105) is provided in the middle of the plurality of lip seals (5042).

4. The suspended high-pressure enclosed cleaning device according to claim 1, characterized in that: A pressure plate (501) is provided on both the upper and lower sides of the plunger (502) for guidance and adjustment. The upper and lower pressure plates (501) can double-close the channel in the plate valve body (507).

5. The suspended high-pressure enclosed cleaning device according to claim 1, characterized in that: Tension springs (5083) with guide posts are provided between the pressure plates (501) and the plungers (502) on both sides, and a pair of rocker rods (5082) are symmetrically hinged between the pressure plates (501) and the plungers (502) on both sides.

6. The suspended high-pressure enclosed cleaning device according to claim 1, characterized in that: A plate valve seal (504) is provided on the sliding matching surface between the cylinder plunger (502) and the plunger (502) channel, and a multi-layer lip seal (5042) is provided in the sealing cavity of the plate valve seal (504).

7. The suspended high-pressure enclosed cleaning device according to claim 1, characterized in that: An inspection window is provided in the middle of the main valve body (202), and an inspection window cover (3) is installed to seal the inspection window. A sealing gasket is installed at the connection position between the inspection window cover (3) and the flushing valve (2) body, and a plurality of screws are evenly spaced around the periphery of the inspection window cover (3) to connect to the flushing valve (2) body.

8. The suspended high-pressure enclosed cleaning device according to claim 1, characterized in that: An observation window (4) is installed at the lower part of the main valve body (202).

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