Device capable of replacing spray gun on line

Abstract

The utility model discloses a device with a spray gun capable of being replaced on line, which relates to the technical field of oil refining chemical pipeline filling and cooling cleaning, comprises a sealing valve, a spray gun outer sleeve, a sealing element and a spray gun, and is characterized in that a spray head is arranged at the tail end of the spray gun, the spray gun outer sleeve is arranged outside the spray gun, and the sealing element is arranged at the upper end of the spray gun outer sleeve; a lower flange of the spray gun outer sleeve is connected with an upper flange of the sealing valve through a bolt, the spray gun can move up and down in the spray gun outer sleeve and the sealing valve, and a telescopic assembly is arranged at the upper position of the spray gun; through the arrangement of the telescopic assembly, the spray gun can be guided and driven, rapid and stable movement of the spray gun is achieved, and the operation efficiency is improved; through the arrangement of the sealing valve, the spray gun can enter or exit from the pipeline under the condition of not stopping and relieving pressure, so that the leakage of a medium in the pipeline is prevented, the online disassembly and assembly of the spray gun are realized, the operation safety is ensured, the loss caused by starting and stopping is avoided, and the maintenance time and cost are effectively reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of oil refining and chemical pipeline filling and cooling cleaning, in particular to a device capable of replacing a spray gun on line. BACKGROUND

[0002] In the process of filling or cooling cleaning in an oil refining and chemical pipeline, an atomizing nozzle is used for injection, and the injection material has a large viscosity or the pipeline contains impurities, which causes the nozzle spout to be blocked or corroded, the nozzle opening to be small or blocked or even to fall off, the injection pressure to be increased or even to be unable to inject, the nozzle to be cleaned or replaced, and the traditional method to require shutdown and disassembly, which is time-consuming and labor-intensive and affects production.

[0003] As disclosed in the announcement No. CN215030204U, "an online replacement device of an auxiliary agent sprayer, comprising an auxiliary agent spray gun provided with a nozzle, and a section tube, a gate valve, a rotary rod type intercepting valve and a spray cap which are sequentially connected and communicated, the rotary rod type intercepting valve is provided with a first channel for the flow of the auxiliary agent, the rotary rod type intercepting valve comprises a rotary rod provided with a gear, a valve core and a control handle assembly for driving the rotary rod to rotate when rotating, the valve core is provided with a rack engaged with the gear, the nozzle of the auxiliary agent spray gun extends into the first channel through the section tube and the gate valve in sequence, and the nozzle is located on the side of the valve core away from the spray cap; a sealing element is arranged between the auxiliary agent spray gun and the section tube to prevent leakage of the auxiliary agent". In actual use, if the size of the nozzle is larger than that of the spray gun, the nozzle may be stuck on the sealing element at one end of the section tube, which makes replacement difficult, and the structure is relatively complex, and workers are difficult to extract and install the spray gun. Therefore, the application provides a device capable of replacing a spray gun on line to solve the above problems. SUMMARY

[0004] The application aims to overcome the defects of the prior art and provide a device capable of replacing a spray gun on line, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a device capable of replacing a spray gun on line, comprising a sealing valve, a spray gun outer sleeve, a sealing element and a spray gun, the spray gun is provided with a spray head at the tail end, the spray gun is provided with a spray gun outer sleeve outside, the sealing element is arranged at the upper end of the spray gun outer sleeve to seal the gap between the spray gun and the spray gun outer sleeve, and the sealing valve is used to seal the process pipeline after the spray gun is removed to prevent medium leakage; the lower flange of the spray gun outer sleeve is connected to the upper flange of the sealing valve through bolts, the spray gun can move up and down in the outer sleeve and the sealing valve, and the upper position of the spray gun is provided with a telescopic assembly.

[0006] Further, the telescopic assembly comprises an upper force applying structure plate, a lower force receiving structure plate, a lead screw and a hand wheel, the upper end of the spray gun is fixed with the upper force applying structure plate, the upper force applying structure plate is rotationally connected with a lead screw provided with a hand wheel, the lower end of the spray gun is fixed with the lower force receiving structure plate, and the outer side of the lead screw is connected with the lower force receiving structure plate through a lead screw nut.

[0007] Further, not less than one guide shaft is arranged between the upper force applying structure plate and the lower force receiving structure plate, the upper end of the guide shaft is fixed on the upper force applying structure plate, the lower force receiving structure plate is provided with a guide hole corresponding to the guide shaft, and the lower end of the guide shaft is inserted into the guide hole of the lower force receiving structure plate.

[0008] Further, the number of the guide shafts is two, the upper end of the guide shaft is in a stepped shape, the shaft surface of the stepped end is provided with a thread, and the stepped end of the guide shaft penetrates through the upper force applying structure plate and is fixed in cooperation with a nut.

[0009] Further, the upper force applying structure plate and the lower force receiving structure plate are consistent in shape and are both triangular, the lead screw is located at the top corner of the triangle, and the two guide shafts are located on the two sides of the bottom side of the triangle.

[0010] Further, the upper end of the hand wheel is rotationally connected with a handle, and the handle is provided with an anti-skid sleeve.

[0011] Further, the upper end of the spray gun is in a stepped shape, the stepped end penetrates through the upper force applying structure plate, and the spray gun is fixed on the upper force applying structure plate in cooperation with a nut.

[0012] Further, the outer side of the sealing valve body is provided with a pressure relief valve, and the pressure relief valve is arranged at an upper position of the sealing valve.

[0013] Compared with the prior art, the telescopic assembly is arranged to guide and drive the spray gun, the spray gun is quickly and stably moved, the operation efficiency is improved, the sealing valve is arranged to enable the spray gun to enter or exit the pipeline without stopping and pressure relief, the medium in the pipeline is prevented from leaking, the spray gun is disassembled and assembled online, the operation safety is ensured, the loss caused by starting and stopping is avoided, and the maintenance time and cost are effectively reduced.

[0014] Meanwhile, the device is designed to be compact and precise in structure, the maintenance time and cost are effectively reduced, the reliability and service life of the overall system are improved, and a solid guarantee is provided for the efficient operation of the oil refining and chemical industry. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a front view of the present application;

[0016] Figure 2 is a top view of the telescopic assembly of the parts.

[0017] In the diagram: 1. Sealing valve, 2. Spray gun outer tube, 3. Seal, 4. Spray gun, 5. Nozzle, 6. Telescopic component, 7. Upper stress-applying structural plate, 8. Lower stress-bearing structural plate, 9. Lead screw, 10. Handwheel, 11. Guide shaft, 12. Metal hose. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application (for ease of description and understanding, hereinafter referred to as...), Figure 1 (The above is described above). All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0019] Please see Figures 1-2 This application provides a technical solution for an online spray gun replacement device: an online spray gun replacement device includes a sealing valve 1, a spray gun outer tube 2, a sealing element 3, and a spray gun 4. The spray gun 4 is provided with a nozzle 5 at its end, and the spray gun 4 is equipped with a spray gun outer tube 2. A sealing element 3 is provided at the upper end of the spray gun outer tube 2 to seal the gap between the spray gun and the spray gun outer tube. The sealing valve is used to seal the process pipeline after the spray gun is removed to prevent media leakage. The lower flange of the spray gun outer tube 2 is connected to the upper flange of the sealing valve 1 by bolts, and the spray gun 4 can move up and down within the spray gun outer tube 2 and the sealing valve 1.

[0020] Specifically, the upper end of the spray gun 4 is connected to an external metal hose 12. Through the setting of the metal hose 12, the spray gun 4 can be supplied with a medium, thereby filling or cleaning the pipeline 1.

[0021] When the spray gun 4 is working, the medium enters the spray gun 4 through the metal hose 12 and is then sprayed out from the nozzle of the spray gun 4 to add or clean the substance in the pipeline 1.

[0022] Specifically, seal 3 has a self-sealing function, which can effectively prevent media leakage and ensure the safety of the operation process.

[0023] Specifically, the sealing valve 1 is a ball valve structure that can be quickly closed during spray gun replacement to isolate pressure and ensure the safety of operators. In addition, the spray gun 4 can pass through the valve core of the sealing valve 1 and thus extend into the pipeline 1.

[0024] Furthermore, a pressure relief valve is provided on the outside of the valve body of sealing valve 1, and the pressure relief valve is located at the upper part of sealing valve 1.

[0025] Specifically, the pressure relief valve releases pressure within the spray gun outer sleeve 2 when the sealing valve 1 is closed, ensuring safety during spray gun 4 replacement. This design effectively prevents safety risks caused by excessive pressure, enhancing the overall safety of system maintenance.

[0026] A telescopic component 6 is provided at the upper part of the spray gun 4. The telescopic component 6 includes an upper force-applying structural plate 7, a lower force-bearing structural plate 8, a lead screw 9, and a handwheel 10. The upper force-applying structural plate 7 is fixed to the upper part of the spray gun 4. A lead screw 9 with a handwheel 10 is rotatably connected to the upper force-applying structural plate 7. The lower force-bearing structural plate 8 is fixed to the upper part of the spray gun outer sleeve 2. The outer side of the lead screw 9 is connected to the lower force-bearing structural plate 8 through a lead screw nut.

[0027] Specifically, the lead screw 9 is equipped with two stroke markers so that the operator can confirm whether the nozzle 5 of the spray gun 4 has reached the center position of the process pipeline or whether it has retracted to the position above the valve core of the sealing valve 1.

[0028] Specifically, the lower load-bearing structural plate 8 is located above the spray gun outer sleeve 2 and is fixed with a nut. Since the lower load-bearing structural plate 8 is fixed, it provides stable support. The upper load-applying structural plate 7 is movable relative to the lower load-bearing structural plate 8. Therefore, when the operator turns the handwheel 10, the handwheel 10 drives the lead screw 9 to rotate. Because the lead screw 9 is connected to the lower load-bearing structural plate 8 via a lead screw nut, and the lower load-bearing structural plate 8 is fixed to the spray gun outer sleeve 2, the rotation of the lead screw 9 will drive the upper load-applying structural plate 7 to move the spray gun 4 up and down, thereby achieving quick replacement of the spray gun 4. This design simplifies the maintenance process, improves operational convenience, and maintains the system's stability and sealing performance.

[0029] Furthermore, the upper end of the spray gun 4 is stepped, with the stepped end penetrating the upper force-applying structure plate 7 and cooperating with a nut to fix the spray gun 4 onto the upper force-applying structure plate 7.

[0030] Specifically, the stepped end of the spray gun 4 penetrates the upper force-applying structure plate 7, and the position where the stepped end extends out of the upper force-applying structure plate 7 is provided with threads, so as to fix the spray gun 4 on the upper force-applying structure plate 7 with the help of nuts.

[0031] Furthermore, at least one guide shaft 11 is provided between the upper force-applying structural plate 7 and the lower force-receiving structural plate 8. The upper end of the guide shaft 11 is fixed on the upper force-applying structural plate 7, and the lower force-receiving structural plate 8 has a guide hole corresponding to the guide shaft 11. The lower end of the guide shaft 11 is inserted into the guide hole of the lower force-receiving structural plate 8.

[0032] Specifically, there are two guide shafts 11. The upper end of the guide shaft 11 is stepped, and the shaft surface of the stepped end is threaded. The stepped end of the guide shaft 11 passes through the upper force-applying structure plate 7 and is fixed with a nut. The guide hole of the lower force-applying structure plate 8 allows the guide shaft 11 to move only axially, restricting its radial movement. This ensures that the spray gun 5 does not shake during the up-and-down movement, thus ensuring the stability of the spray gun movement.

[0033] Furthermore, the upper force-applying structural plate 7 and the lower force-receiving structural plate 8 have the same shape, both being triangular, with the lead screw 9 located at the apex of the triangle and the two guide shafts 11 located on both sides of the base of the triangle.

[0034] Furthermore, the upper end of the handwheel 10 is rotatably connected to a handle for easy operation, and the handle is equipped with an anti-slip sleeve to prevent slippage during operation.

[0035] When in use: When the spray gun 4 needs to be replaced or maintained, the operator turns the handwheel 10 to drive the screw 9 to rotate. Since the screw 9 is connected to the lower load-bearing structure plate 8 through the screw nut, the rotation of the screw 9 will drive the upper load-bearing structure plate 7, the spray gun 4 and the guide shaft 11 to move upward as a whole. When the screw 9 moves to the marked position above the valve core, close the sealing valve 1, open the pressure relief valve, and release the medium in the spray gun outer tube 2. After the release is completed, close the pressure relief valve, disconnect the metal hose 12 from the spray gun 4, remove the connecting bolts between the sealing valve 1 and the spray gun outer tube 2, and remove the spray gun 4, the spray gun outer tube 2 and the telescopic component 6 as a whole. After cleaning or replacing the nozzle, reassemble.

[0036] When installing the spray gun 4, first fasten the spray gun outer tube 2 to the sealing valve 1, and connect the metal hose 12 to the spray gun 4. Then open the sealing valve 1, and drive the upper force-applying structure plate 7, the spray gun 4 and the guide shaft 11 to move downward as a whole by rotating the handwheel 10 in the opposite direction. When the screw 9 moves to the center mark position of the pipeline, the installation is completed.

[0037] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for on-line replacement of a lance, comprising a sealing valve (1), a lance outer sleeve (2), a sealing element (3) and a lance (4), characterized in that: The spray gun (4) is provided with a spray head (5) at the end, the spray gun (4) is provided with a spray gun outer sleeve (2) outside, the upper end of the spray gun outer sleeve (2) is provided with a sealing element (3), the lower flange of the spray gun outer sleeve (2) is connected with the upper flange of the sealing valve (1) through bolts, and the spray gun (4) can move up and down in the spray gun outer sleeve (2) and the sealing valve (1), and the upper position of the spray gun (4) is provided with a telescopic assembly (6).

2. An apparatus for on-line replacement of a lance according to claim 1, characterized in that: The telescopic assembly (6) comprises an upper force applying structure plate (7), a lower force bearing structure plate (8), a lead screw (9) and a hand wheel (10), the upper part of the spray gun (4) is fixed with the upper force applying structure plate (7), a lead screw (9) with a hand wheel (10) is rotatably connected to the upper force applying structure plate (7), and the upper part of the spray gun outer sleeve (2) is fixed with the lower force bearing structure plate (8), and the outer side of the lead screw (9) is connected with the lower force bearing structure plate (8) through a lead screw nut.

3. An on-line replaceable lance assembly according to claim 2, wherein: At least one guide shaft (11) is arranged between the upper force applying structure plate (7) and the lower force bearing structure plate (8), the upper end of the guide shaft (11) is fixed on the upper force applying structure plate (7), the lower force bearing structure plate (8) is provided with a guide hole corresponding to the guide shaft (11), and the lower end of the guide shaft (11) is inserted into the guide hole of the lower force bearing structure plate (8).

4. An apparatus according to claim 3, wherein: The number of the guide shaft (11) is two, the upper end of the guide shaft (11) is in a stepped shape, and the threaded surface of the stepped end is provided with threads, and the stepped end of the guide shaft (11) penetrates the upper force applying structure plate (7) and is fixed in cooperation with the nut.

5. An on-line replaceable device for a lance according to claim 2, characterized in that: The upper force applying structure plate (7) and the lower force bearing structure plate (8) are consistent in shape and are both triangular, the lead screw (9) is located at the top corner of the triangle, and the two guide shafts (11) are located on the two sides of the bottom side of the triangle.

6. An on-line replaceable device for a lance according to claim 2, characterized in that: The upper end of the hand wheel (10) is rotatably connected with a handle, and the handle is provided with an anti-skid sleeve.

7. An on-line replaceable device for a lance according to claim 1, characterized in that: The upper end of the spray gun (4) is in a stepped shape, the stepped end penetrates the upper force applying structure plate (7), and the spray gun (4) is fixed on the upper force applying structure plate (7) in cooperation with the nut.

8. An on-line replaceable device for a lance according to claim 1, characterized in that: The outer side of the valve body of the sealing valve (1) is provided with a pressure relief valve, and the pressure relief valve is arranged at the upper position of the sealing valve (1).

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