Scraper knife for flammable and explosive environment

Abstract

The scraper knife used in the flammable and explosive environment comprises an operating rod, a scraper knife body is arranged at the front end of the operating rod, and the knife edge of the scraper knife body is perpendicular to the direction of a rod body of the operating rod; a cleaning agent spraying assembly is fixed to the operating rod, and a water outlet of the cleaning agent spraying assembly is formed in the front end of the operating rod and aligned to the edge of the scraper knife. A spraying control device is arranged at the tail end of the operating rod and communicates with the cleaning agent spraying assembly. A worker can control the cleaning agent spraying assembly to spray out the cleaning agent by extruding the air bag, and operation is easy and convenient. A liquid storage bottle of the cleaning agent spraying assembly can add cleaning agents, adhesive removing agents and other liquid according to different stains and impurities, the cleaning effect is improved, cleaning work can be conveniently and efficiently carried out in a labor-saving mode, the cleaning agent can cool the tool bit at the same time, and the situation that the tool bit rises to the ignition temperature of flammable and explosive gas, gas is ignited, and personal safety accidents are caused is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper blade design, and in particular to a scraper blade used in an inflammable and explosive environment. Background Art

[0002] A scraper is one of the commonly used cleaning tools, which can remove impurities, colloids, sludge, etc. attached to walls, glass, tiles, metal equipment, etc.

[0003] However, the current shovel blades have a single function and cannot be used in flammable and explosive environments such as natural gas boilers and pipelines. For example, the Chinese utility model patent with patent number CN201420388228.8 discloses a crystallization shovel for Combitin, including a shovel handle and a shovel blade installed on the shovel handle. The crystallization shovel also includes a fixing groove installed at the lower end of the shovel handle and a number of fixing parts that fix the shovel blade and the fixing groove. The fixing groove is in an inverted U shape and includes a connecting part connected to the lower end of the shovel handle and two side walls extending vertically downward from both sides of the connecting part. The shovel blade is installed inside the fixing groove and is located between the two side walls. The fixing part passes through the two side walls and the shovel blade, and the shovel blade can move on the fixing part. The shovel blade also has the following defects: 1. Although the shovel blade made of polytetrafluoroethylene will not generate sparks during operation, it will generate static electricity and heat. For flammable and explosive environments such as natural gas boiler equipment, pipelines and their working spaces, the explosion-proof safety is insufficient. 2. When using conventional scrapers for cleaning, scraping, and sweeping, the main reliance is on strength and angle. Stubborn impurities often cannot be cleaned, and it is necessary to spray cleaning agents, degumming agents, and other cleaning agents. This scraper does not have the function of spraying cleaning agents. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a scraper for use in flammable and explosive environments.

[0005] The utility model is realized by the following technical solutions:

[0006] A scraper for use in an inflammable and explosive environment, comprising:

[0007] Operating lever 1;

[0008] The scraper 2 is arranged at the front end of the operating rod 1, with the blade perpendicular to the rod body of the operating rod 1, and is used to scrape away debris on the plane;

[0009] The cleaning agent spraying assembly 3 is fixed on the operating rod 1, and the water outlet is arranged at the front end of the operating rod 1 and is aimed at the cutting edge of the shovel blade 2, so as to spray the cleaning agent to the cutting edge of the shovel blade 2;

[0010] The spray control device 4 is arranged at the end of the operating rod 1 and is connected to the detergent spray assembly 3 for controlling the spraying of the detergent.

[0011] Furthermore, the cleaning agent spraying assembly 3 comprises:

[0012] A liquid storage bottle 31 is fixed on the operating rod 1;

[0013] The nozzle 32 is disposed at the front end of the liquid storage bottle 31 and communicates with the liquid storage chamber 311 at the front end of the liquid storage bottle 31;

[0014] The piston 33 is slidably arranged in the liquid storage bottle 31. The area from the front end of the piston 33 to the nozzle 32 is a liquid storage chamber 311, and the area from the rear end of the piston 33 to the bottom of the liquid storage bottle 31 is an air chamber 312. A pressure relief valve 313 is arranged at the bottom of the liquid storage bottle 31.

[0015] Furthermore, the spray control device 4 comprises:

[0016] A pressurized hose 41, one end of which is connected to the air chamber 312 at the end of the liquid storage bottle 31, and the other end of which is connected to the air outlet at the front end of the air bag 42;

[0017] An air bag 42 is arranged at the end of the operating rod 1;

[0018] The first one-way valve 43 is disposed at the end of the airbag 42 , and air enters the airbag 42 in one direction.

[0019] Furthermore, a bayonet 11 is provided at the end of the operating rod 1 , and the pressurized hose 41 at the air outlet of the airbag 42 is clamped in the bayonet 11 .

[0020] Furthermore, the scraper 2 includes a scraper plate 21 and a cutter head 22 . The scraper plate 21 is fixed to the front end of the operating rod 1 , and the cutter head 22 is detachably mounted on the front end of the scraper plate 21 .

[0021] Furthermore, the cutter head 22 is made of carbon fiber material.

[0022] Furthermore, the operating rod 1 is a telescopic rod, and an anti-slip sleeve 12 is provided at the end of the operating rod 1.

[0023] Furthermore, a cut-off ring 13 is provided on the front section of the operating rod 1. The cut-off ring 13 is in an umbrella-shaped structure, and its umbrella-shaped edge faces the end.

[0024] The working principle of this utility model:

[0025] The utility model takes an operating rod 1 and a scraper 2 as a main body. The operating rod 1 stores detergent through a liquid storage bottle 31 of a detergent spraying assembly 3, and sprays detergent on the cutting edge of the scraper 2 through a nozzle 32 at the front end of the liquid storage bottle 31; the detergent spraying assembly 3 sprays detergent, and the air bag 42 of the spraying control device 4 controls the spraying time and dosage, and the scraper 2 realizes the replacement of wear parts by setting a detachable cutter head 22.

[0026] When the staff squeezes the airbag 42 of the spray control device 4, the gas in the airbag 42 flows along the pressurized hose 41 to the liquid storage bottle 31, and enters the air chamber 312 in one direction through the second one-way valve 44, the air pressure in the air chamber 312 increases, the air pressure squeezes the detergent from the nozzle 32 through the piston 33, and sprays it on the cutter head 22; when the staff releases the hand squeezing the airbag 42, the air pressure in the airbag 42 is less than the atmospheric pressure, the second one-way valve 44 blocks the gas in the air chamber 312 from entering the airbag 42, the air enters the airbag 42 in one direction from the first one-way valve 43, and the airbag 42 gradually swells until the air pressure in the airbag 42 is balanced with the atmospheric pressure.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] The liquid storage bottle 31 of the detergent spray assembly 3 can add cleaning agents, degumming agents and other liquids for different stains and impurities to improve the cleaning effect and facilitate more efficient and labor-saving cleaning work. The detergent can also cool the cutter head 22 to prevent the cutter head 22 from rising to the ignition point temperature of flammable and explosive gases and igniting the gases, causing personal safety accidents.

[0029] The staff can control the cleaning agent spraying assembly 3 to spray the cleaning agent by squeezing the air bag 42, which is simple and convenient to operate.

[0030] The cutter head 22 is made of carbon fiber as a raw material, has good heat resistance, is not easy to deform, does not generate static electricity and sparks, and can ensure the safety of working in a flammable and explosive environment.

[0031] The operating rod 1 is in a retractable mode, which can reduce the limitation of the cleaning range, avoid the operator using climbing tools, and prevent personal injury. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0033] Figure 2 An exploded view of the operating lever and the blade of the utility model;

[0034] Figure 3 An exploded view of the cleaning agent spray assembly and the spray control device of the utility model;

[0035] Figure 4 It is a cross-sectional view of the cleaning agent spraying assembly and the spraying control device of the utility model;

[0036] Figure 5 This is a usage state diagram of the utility model.

[0037] Numbers in the figure:

[0038] 1-operating rod, 11-bayonet, 12-anti-slip sleeve, 13-cut-off ring;

[0039] 2-shovel blade, 21-shovel blade plate, 22-shovel head;

[0040] 3-cleaner spray assembly, 31-liquid storage bottle, 311-liquid storage chamber, 312-air chamber, 313-pressure relief valve, 314-water inlet, 32-nozzle, 33-piston;

[0041] 4-spraying control device, 41-pressurized hose, 42-air bag, 43-first one-way valve, 44-second one-way valve. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the utility model, its specific implementation method is described in detail below with reference to the accompanying drawings.

[0043] like Figure 1-5 As shown, a scraper for use in flammable and explosive environments includes an operating rod 1, a scraper 2 is arranged at the front end of the operating rod 1, and the blade 2 is perpendicular to the rod direction of the operating rod 1; a detergent spraying assembly 3 is fixed on the operating rod 1, and the water outlet of the detergent spraying assembly 3 is arranged at the front end of the operating rod 1 and is aligned with the blade position of the scraper 2; a spraying control device 4 is arranged at the end of the operating rod 1, and the spraying control device 4 is connected to the detergent spraying assembly 3.

[0044] In an embodiment, Figure 3 , 4 As shown, the detergent spraying assembly 3 includes a liquid storage bottle 31 and a nozzle 32. A water inlet 314 is provided at the front end of the liquid storage bottle 31. The outer wall or inner wall of the water inlet 314 is provided with a thread. The nozzle 32 is connected to the water inlet 314 through the thread. When the staff adds detergent, they just unscrew the nozzle 32. Liquids such as water, cleaning agents, and degumming agents can be added to the liquid storage bottle 31 according to different stains and impurities to improve the cleaning effect.

[0045] The nozzle 32 is an atomizing nozzle or a nozzle with a flat water outlet, which ensures that the cleaning agent spreads and covers the cutter head 22 after being sprayed out.

[0046] The piston 33 is slidably arranged in the liquid storage bottle 31. The area from the front end of the piston 33 to the nozzle 32 is a liquid storage chamber 311, and the area from the rear end of the piston 33 to the bottom of the liquid storage bottle 31 is an air chamber 312. A sealing ring is arranged on the circumference of the piston 33, and the sealing ring contacts the inner wall of the liquid storage bottle 31 to prevent the cleaning agent in the liquid storage chamber 311 from flowing into the air chamber 312 and affecting the air pressure control effect of the spray control device 4.

[0047] In an embodiment, Figure 3 , 4As shown, the spray control device 4 is composed of a pressurized hose 41 and an air bag 42. The pressurized hose 41 connects the air chamber 312 at the end of the liquid storage bottle 31 and the air bag 42. A first one-way valve 43 is installed at the end of the air bag 42. When the staff squeezes the air bag 42, the gas in the air bag 42 flows along the pressurized hose 41 to the liquid storage bottle 31, and enters the air chamber 312 in one direction through the second one-way valve 44. The air pressure in the air chamber 312 increases, and the air pressure squeezes the detergent from the nozzle 32 through the piston 33 and sprays it on the position of the cutter head 22; when the staff releases the hand squeezing the air bag 42, the air pressure in the air bag 42 is less than the atmospheric pressure, and the air enters the air bag 42 in one direction from the first one-way valve 43, and the air bag 42 gradually swells until the air pressure in the air bag 42 is balanced with the atmospheric pressure.

[0048] In the embodiment, the airbag 42 is fixed in a position in the bayonet 11 by the pressurized hose 41 at the air outlet. The staff can choose the operation mode according to their own usage habits. The pressurized hose 41 can be stuck in the bayonet 11, and the airbag 42 can be fixed on the operating rod 1 for squeezing; or the airbag 42 can be removed from the bayonet 11, the operating rod can be held with one hand, and the airbag 42 can be operated alone with the other hand.

[0049] In an embodiment, Figure 2 As shown, the cutter head 22 is fixed to the front end of the scraper plate 21 by bolts or buckles. When the cutter head 22 is severely worn, the bolts can be loosened to remove the severely worn cutter head 22, and a new cutter head 22 can be installed for continued use.

[0050] In the embodiment, the cutter head 22 is made of carbon fiber material, which has good heat resistance, is not easy to deform, and will not generate sparks, thereby ensuring the safety of working in flammable and explosive environments.

[0051] In the embodiment, the length of the blade 22 is 100 mm. The main rod of the operating rod 1 is 600 mm long, and the length of the retractable part is 400 mm. A locking sleeve is provided at the retractable opening of the main rod of the operating rod 1. The staff can adjust the length of the operating rod 1 according to their own height and the height of the stain, thereby reducing the time for the staff to bend over and climb to work, and improving work efficiency. The length of the anti-slip sleeve 12 is 250 mm.

[0052] In an embodiment, Figure 1 , 2 As shown, the intercepting ring 13 is used to intercept the cleaning agent flowing from the blade 22 to the shaft of the operating rod 1. When the worker lifts the operating rod 1 to clean the wall, glass or equipment surface at a high place, the cleaning agent flows along the blade 2 and the operating rod 1 to the intercepting ring 13 with an umbrella structure. Because the cleaning agent flowing to the back of the intercepting ring 13 is a countercurrent, the cleaning agent will drip when it flows to the edge of the intercepting ring 13, preventing the cleaning agent from flowing to the end of the operating rod 1 and contaminating the hands of the worker.

[0053] Working mode of the utility model:

[0054] The staff takes the device to the wall or equipment where stains and debris need to be cleaned, then holds the operating rod 1 with both hands, aligns the blade of the cutter head 22 with the stains and debris and presses it against the wall or equipment surface, then holds the air bag 42 with one hand and squeezes the air bag 42, the gas pushes the piston 33 to slide, and squeezes the detergent, so that the detergent is sprayed from the nozzle 33 to the stains and debris at the position of the cutter head 22, and then pushes the operating rod 1 to make the cutter head 22 shovel up the stains and debris. If the stains and debris are difficult to remove, wait for 1-2 minutes, wait for the detergent to merge with the stains and debris, and then push the operating rod 1 to remove the debris.

[0055] When the staff adds detergent, they unscrew the nozzle 32, open the pressure relief valve 313, and add detergent into the liquid storage bottle 31 from the water inlet 314. The weight of the detergent pushes the piston 33 to slide to the bottom of the liquid storage bottle 31, and the gas in the air chamber 312 is squeezed out from the pressure relief valve 313. After the detergent is added, the pressure relief valve 313 is closed, and then the nozzle 32 is screwed on.

[0056] It should be noted that the above detailed introduction of the technical solution of the utility model and the description of the principle of the utility model are provided, and the above description of the working principle is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0057] The technical personnel in the technical field of the utility model can make modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, which shall fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A scraper for use in flammable and explosive environments, characterized in that: include: Operating lever (1); A scraper (2) is arranged at the front end of the operating rod (1), with the blade being perpendicular to the rod body of the operating rod (1) and used for scraping away debris on a plane; A cleaning agent spraying assembly (3) is fixed on the operating rod (1), and a water outlet is arranged at the front end of the operating rod (1) and is aimed at the blade position of the shovel (2), and is used to spray the cleaning agent at the blade position of the shovel (2); The spray control device (4) is arranged at the end of the operating rod (1) and is connected to the cleaning agent spray assembly (3) for controlling the cleaning agent spraying.

2. The scraper for use in flammable and explosive environments according to claim 1, characterized in that: The cleaning agent spraying assembly (3) comprises: A liquid storage bottle (31) is fixed on the operating rod (1); A nozzle (32) is arranged at the front end of the liquid storage bottle (31) and is communicated with the liquid storage chamber (311) at the front end of the liquid storage bottle (31); The piston (33) is slidably arranged in the liquid storage bottle (31); the area from the front end of the piston (33) to the nozzle (32) is a liquid storage chamber (311); the area from the rear end of the piston (33) to the bottom of the liquid storage bottle (31) is an air chamber (312); and a pressure relief valve (313) is arranged at the bottom of the liquid storage bottle (31).

3. The scraper for use in flammable and explosive environments according to claim 2, characterized in that: The spray control device (4) comprises: A pressurizing hose (41), one end of which is connected to the air chamber (312) at the end of the liquid storage bottle (31), and the other end of which is connected to the air outlet at the front end of the air bag (42); An air bag (42) is arranged at the end of the operating rod (1); The first one-way valve (43) is arranged at the end of the airbag (42), and air enters the airbag (42) in one direction.

4. The scraper for use in flammable and explosive environments according to claim 1, characterized in that: The end of the operating rod (1) is provided with a bayonet (11), and the pressurized hose (41) at the air outlet of the air bag (42) is clamped in the bayonet (11).

5. The scraper for use in flammable and explosive environments according to claim 1, characterized in that: The scraper (2) comprises a scraper plate (21) and a cutter head (22); the scraper plate (21) is fixed to the front end of the operating rod (1), and the cutter head (22) is detachably mounted on the front end of the scraper plate (21).

6. The scraper for use in an inflammable and explosive environment according to claim 5, characterized in that: The cutter head (22) is made of carbon fiber material.

7. The scraper for use in an inflammable and explosive environment according to claim 1, characterized in that: The operating rod (1) is a telescopic rod, and an anti-slip sleeve (12) is arranged at the end of the operating rod (1).

8. The scraper for use in an inflammable and explosive environment according to claim 1, characterized in that: The front section of the operating rod (1) is provided with a cut-off ring (13), and the cut-off ring (13) is in an umbrella-shaped structure, with its umbrella-shaped edge facing the end.

Images