Heating furnace for metal surface treatment

By introducing the combined use of a water spray assembly and a U-shaped cleaning scraper into the heating furnace, the problem of limitations in cleaning the inner wall and the bottom of the inner cavity of the heating furnace is solved, and a more efficient cleaning effect is achieved.

CN223422723UActive Publication Date: 2025-10-10陈艳
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Patent Information

Application Number
CN202422604041.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-28
Publication Date
2025-10-10
Estimated Expiration
2034-10-28

AI Technical Summary

Technical Problem

The cleaning device of the existing heating furnace for metal surface treatment can only clean the inner wall of the heating chamber, but cannot clean the bottom of the inner chamber. In addition, high temperature heating makes it more difficult to clean the dirt, and the existing cleaning effect is not ideal.

Method used

A water spray assembly is used to spray cleaning agent into the heating furnace, and a U-shaped cleaning scraper is driven by a driving member to clean the inner wall and the bottom of the inner cavity. Combining the use of the water spray assembly and the U-shaped cleaning scraper, the cleaning area is expanded and the cleaning effect is improved.

Benefits of technology

The inner wall and the bottom of the inner cavity of the heating furnace are fully cleaned, and the cleaning efficiency and effect are improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a heating furnace for metal surface treatment, and relates to the field of heating furnaces. The heating furnace comprises a heating furnace body, a lifting piece is arranged in the heating furnace body, a furnace cover is arranged at the top of the lifting piece, a driving piece is arranged at the top of the furnace cover, a mounting groove is formed in the bottom of the furnace cover, a rotating piece is arranged in the mounting groove in a rotating fit mode, a U-shaped cleaning scraper is arranged on the rotating piece, and the driving piece is matched with the mounting groove. A main clamping piece is arranged at the bottom of the rotating piece, an auxiliary clamping piece is arranged on the main clamping piece, and a water spraying assembly is arranged at the top of the furnace cover. Through the arrangement of the water spraying assembly and the U-shaped cleaning scraping plate, a cleaning agent is sprayed into the heating furnace body through the water spraying assembly, dirt is decomposed through the cleaning agent, then the U-shaped cleaning scraping plate is driven by the driving piece to clean the inner wall and the bottom of the inner cavity of the heating furnace body, the cleaning area is increased, and the cleaning effect is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of heating furnaces, in particular to a heating furnace for metal surface treatment. Background Art

[0002] A heating furnace for metal surface treatment is a device specially designed for heat treatment of metal workpieces to improve their surface properties.

[0003] Chinese utility model patent: CN201921785640.2, discloses a heating furnace for metal surface treatment, comprising a furnace body and a heating chamber, wherein a heating chamber is arranged inside the furnace body, a chamber cover is connected to the top side of the heating chamber by a hinge, electric sliders are arranged on both sides of the inner wall of the heating chamber, a guide rail is provided between the heating chamber and the furnace body at the position corresponding to the electric slider, a cleaning ring is connected to the upper part of one side of the electric slider by bolts, and a switch is provided on the top side of the furnace body. Firstly, the utility model solves the problem that a dirt layer will form on the inner wall of the heating furnace by arranging a cleaning treatment device. When the dirt layer is relatively thick, it will affect the heating effect and reduce the product quality. At present, it is very inconvenient and inefficient to manually handle such dirt. Secondly, a pull-out plate and a drawer are arranged at the bottom of the furnace body to solve the problem of inconvenient dumping of the treated dirt. Finally, the problem that there is no place for cleaning tools in the furnace body is solved by providing a receiving groove.

[0004] The above patent uses an electric slider to drive the cleaning ring to move up and down in the guide rail, so that the cleaning ring scrapes off the dirt on the inner wall of the heating chamber. However, the cleaning ring can only clean the inner wall of the heating chamber and cannot clean the bottom of the heating chamber. The cleaning has limitations. Secondly, the heating furnace requires high temperature to heat the metal, but high temperature makes dirt more difficult to clean. The effect of cleaning the dirt only by moving the cleaning ring up and down is not ideal.

[0005] Therefore, we have made improvements to this and proposed a heating furnace for metal surface treatment. Utility Model Content

[0006] The purpose of the utility model is to drive the cleaning ring to move up and down in the guide rail through the electric slider, so that the cleaning ring can scrape off the dirt on the inner wall of the heating chamber. However, the cleaning ring can only clean the inner wall of the heating chamber and cannot clean the bottom of the heating chamber. The cleaning has limitations. Secondly, the heating furnace requires high temperature to heat the metal, but high temperature makes the dirt more difficult to clean. The effect of cleaning the dirt only by moving the cleaning ring up and down is not ideal.

[0007] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following technical solutions:

[0008] The invention discloses a heating furnace for metal surface treatment, which can improve the above problems.

[0009] The specific application is as follows:

[0010] The invention comprises: a heating furnace body, a lifting member is provided in the heating furnace body, a furnace cover is installed on the top of the lifting member, a driving member is installed on the top of the furnace cover, a mounting groove is provided at the bottom of the furnace cover, a rotating member is rotatably fitted in the mounting groove, a U-shaped cleaning scraper is installed on the rotating member, the driving member cooperates with the mounting groove, a main clamping member is installed at the bottom of the rotating member, a secondary clamping member is provided on the main clamping member, a water spray assembly is installed on the top of the furnace cover, the output end of the water spray assembly is connected with the mounting groove, the output end of the water spray assembly is provided with a sealing assembly, a slag discharge pipe connected with the heating furnace body is provided on the side of the heating furnace body, and a slag discharge cover is provided on the slag discharge pipe.

[0011] Through the provided water spray assembly and U-shaped cleaning scraper, the water spray assembly sprays the cleaning agent into the heating furnace body, so that the cleaning agent decomposes the dirt, and then the U-shaped cleaning scraper is driven by the driving member to clean the inner wall and the bottom of the inner cavity of the heating furnace body, thereby increasing the cleaning area and improving the cleaning effect.

[0012] As a preferred embodiment of the metal surface treatment heating furnace provided by the present invention, the lifting member includes a plurality of circular grooves opened on the top of the heating furnace body, and an electric telescopic rod is installed in the circular groove, and the top end of the electric telescopic rod is fixedly connected to the furnace cover.

[0013] As a preferred embodiment of the heating furnace for metal surface treatment provided by the present invention, the driving part includes a motor installed on the top of the furnace cover, and a connecting rod is installed at the output end of the motor. The connecting rod is movably connected to the furnace cover, and the bottom end of the connecting rod is fixedly connected to the rotating part.

[0014] As a preferred embodiment of the heating furnace for metal surface treatment provided by the present invention, the rotating part includes a rotating block that rotatably fits in the mounting groove, a plurality of through holes are provided on the rotating block, the bottom of the inner cavity of the rotating block is fixedly connected to the connecting rod, the main clamping part is installed at the bottom of the rotating block, and the U-shaped cleaning scraper is fixedly connected to the rotating block.

[0015] As a preferred embodiment of the heating furnace for metal surface treatment provided by the present invention, the main clamping member includes two fixed blocks installed at the bottom of the rotating block, a limiting rod is installed between the two fixed blocks, and two L-shaped clamping blocks are slidingly engaged on the limiting rod, a two-way threaded rod is rotatably engaged between the two fixed blocks, a crank is installed at one end of the two-way threaded rod, the two L-shaped clamping blocks are threadedly engaged with the two-way threaded rod, and the auxiliary clamping member is arranged on the L-shaped clamping block.

[0016] As a preferred implementation form of the heating furnace for metal surface treatment provided by the utility model, the auxiliary clamping piece comprises a trapezoidal groove opened on the L-shaped clamping block, a trapezoidal sliding block is slidingly matched in the trapezoidal groove, a tension spring is arranged between the bottom end of the trapezoidal sliding block and the trapezoidal groove, and a pressing plate is arranged on the side surface of the trapezoidal sliding block.

[0017] As a preferred implementation form of the heating furnace for metal surface treatment provided by the utility model, the water spraying assembly comprises a water tank arranged on the top of the furnace cover, a water injection pipe in communication with the water tank is arranged on the top of the water tank, a pipe cover is threadedly matched with the top end of the water injection pipe, a water pump is arranged on the side surface of the water tank, a water suction pipe in communication with the water tank is arranged on the water pump, and a communication pipe is arranged on the water pump and is in communication with the mounting groove.

[0018] As a preferred implementation form of the heating furnace for metal surface treatment provided by the utility model, the sealing assembly comprises a circular sliding groove opened at one end of the communication pipe, a sliding rod is slidingly matched in the circular sliding groove, a spring is arranged between the top end of the sliding rod and the circular sliding groove, and a sealing cover is arranged on the bottom of the sliding rod.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] The utility model discloses a water spraying assembly and a U-shaped cleaning scraper are arranged, the water spraying assembly is used for spraying the cleaning agent in the heating furnace body, the cleaning agent is used for decomposing dirt, then the U-shaped cleaning scraper is driven by the driving part to clean the inner wall and the bottom of the inner cavity of the heating furnace body, the cleaning area is increased, and the cleaning effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model provides the stereogram structure schematic drawing of heating furnace for metal surface treatment for this application;

[0022] Figure 2 The utility model provides the heating furnace body profile structure schematic drawing of heating furnace for metal surface treatment for this application;

[0023] Figure 3 The utility model provides the lifting piece structure schematic drawing of heating furnace for metal surface treatment for this application;

[0024] Figure 4 The utility model provides the rotating block structure schematic drawing of heating furnace for metal surface treatment for this application;

[0025] Figure 5 The utility model provides the clamping piece structure schematic drawing of heating furnace for metal surface treatment for this application;

[0026] Figure 6The connecting pipe cross section structure schematic diagram of the heating furnace for metal surface treatment provided in the application.

[0027] Indicated in the figure:

[0028] 1, heating furnace body; 2, furnace cover; 3, slag discharge pipe; 4, slag discharge cover; 5, mounting groove; 6, motor; 7, connecting rod; 8, rotating block; 9, through hole; 10, fixed block; 11, limiting rod; 12, bidirectional threaded rod; 13, crank; 14, L-shaped clamping block; 15, trapezoidal groove; 16, trapezoidal sliding block; 17, tension spring; 18, pressing plate; 19, water tank; 20, water injection pipe; 21, pipe cover; 22, water pump; 23, connecting pipe; 24, circular sliding groove; 25, sliding rod; 26, spring; 27, sealing cover; 28, circular groove; 29, electric telescopic rod; 30, U-shaped cleaning scraper. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0030] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but only represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0031] It should be noted that the embodiments in the present application and the features and technical schemes in the embodiments can be combined with each other without conflict.

[0032] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0033] In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly placed when the product is used, or the orientation or position relationship commonly understood by those skilled in the art, such terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0034] As in the background art, an electric slider drives a cleaning ring to move up and down in a guide rail, so that the cleaning ring scrapes off the dirt on the inner wall of the heating chamber. However, the cleaning ring can only clean the inner wall of the heating chamber, but cannot clean the bottom of the heating chamber. The cleaning has limitations. Secondly, the heating furnace requires high temperature to heat the metal, but high temperature makes the dirt more difficult to clean. The effect of cleaning the dirt only by moving the cleaning ring up and down is not ideal.

[0035] In order to solve this technical problem, the utility model provides a heating furnace for metal surface treatment.

[0036] Specifically, please refer to Figure 1-6 The heating furnace for metal surface treatment specifically includes: a heating furnace body 1, a lifting part is provided in the heating furnace body 1, a furnace cover 2 is installed on the top of the lifting part, a driving part is installed on the top of the furnace cover 2, a mounting groove 5 is provided at the bottom of the furnace cover 2, a rotating part is rotatably matched in the mounting groove 5, a U-shaped cleaning scraper 30 is installed on the rotating part, the driving part cooperates with the mounting groove 5, a main clamping part is installed at the bottom of the rotating part, a secondary clamping part is provided on the main clamping part, a water spray assembly is installed on the top of the furnace cover 2, the output end of the water spray assembly is connected with the mounting groove 5, and the output end of the water spray assembly is provided with a sealing assembly. A slag discharge pipe 3 connected to the heating furnace body 1 is provided on the side of the heating furnace body 1, and a slag discharge cover 4 is provided on the slag discharge pipe 3.

[0037] By means of the provided water spray assembly and the U-shaped cleaning scraper 30, the cleaning agent is sprayed into the heating furnace body 1 through the water spray assembly so that the cleaning agent decomposes the dirt, and then the U-shaped cleaning scraper 30 is driven by the driving member to clean the inner wall and the bottom of the inner cavity of the heating furnace body 1, thereby increasing the cleaning area and improving the cleaning effect.

[0038] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] Example 1

[0042] Please refer to Figure 1-6The utility model provides a kind of heating furnace for metal surface treatment, including: heating furnace body 1, lifting piece is provided in heating furnace body 1, the top of lifting piece is equipped with furnace cover 2, the top of furnace cover 2 is equipped with driving part, the bottom of furnace cover 2 is equipped with installation groove 5, rotating part is rotatably matched in installation groove 5, U-shaped cleaning scraper 30 is equipped on rotating part, driving part is matched with installation groove 5, the bottom of rotating part is equipped with main clamping part, and vice clamping part is provided on main clamping part, the top of furnace cover 2 is equipped with water spraying assembly, and the output end of water spraying assembly is connected with installation groove 5, and the output end of water spraying assembly is provided with sealing assembly, the side surface of heating furnace body 1 is equipped with the discharge pipe 3 being connected with heating furnace body 1, and discharge pipe 3 is provided with discharge cover 4;Wherein, U-shaped cleaning scraper 30 is closely attached with the inner wall and inner cavity bottom of heating furnace body 1.Lifting piece includes multiple circular grooves 28 being opened in the top of heating furnace body 1, and electric telescopic rod 29 is equipped in circular groove 28, and the top end of electric telescopic rod 29 is fixedly connected with furnace cover 2;Wherein, the inner wall of circular groove 28 is provided with heat insulation layer for reducing the influence of high temperature on electric telescopic rod 29.Driving part includes motor 6 being equipped in the top of furnace cover 2, and the output end of motor 6 is equipped with connecting rod 7, and connecting rod 7 is movably connected with furnace cover 2, and the bottom end of connecting rod 7 is fixedly connected with rotating part.Rotating part includes rotating block 8 being rotatably matched in installation groove 5, and multiple through holes 9 are opened in rotating block 8, and the bottom of the inner cavity of rotating block 8 is fixedly connected with connecting rod 7, and main clamping part is equipped in the bottom of rotating block 8, and U-shaped cleaning scraper 30 is fixedly connected with rotating block 8.Water spraying assembly includes water tank 19 being equipped in the top of furnace cover 2, and the top of water tank 19 is equipped with water injection pipe 20 being connected with water tank 19, and the top end of water injection pipe 20 is threadedly matched with pipe cover 21, and the side surface of water tank 19 is equipped with water pump 22, and water pump 22 is equipped with pumping pipe being connected with water tank 19, and water pump 22 is equipped with communicating pipe 23, and communicating pipe 23 is connected with installation groove 5.Sealing assembly includes circular slide groove 24 being opened in one end of communicating pipe 23, and sliding rod 25 is slidably matched in circular slide groove 24, and spring 26 is equipped between the top end of sliding rod 25 and circular slide groove 24, and sealing cover 27 is equipped in the bottom of sliding rod 25;Through the sealing assembly arranged, when starting water pump 22, sealing cover 27 will drive sliding rod 25 to slide under the impact of water flow, to open communicating pipe 23, when closing water pump 22, under the action of spring 26, sealing cover 27 is reset, to seal connecting pipe 23, can reduce the gas generated when metal plate is heated into communicating pipe 23.

[0043] Implementation process: When it is necessary to clean the inside of the heating furnace body 1, the device is first powered on, and the water pump 22 is started. The water pump 22 transports the detergent in the water tank 19 to the rotating block 8 through the suction pipe and the connecting pipe 23, and enters the heating furnace body 1 through the multiple through holes 9 of the rotating block 8, so that the detergent decomposes the dirt in the heating furnace body 1, and then the motor 6 is started. The motor 6 drives the rotating block 8 to rotate through the connecting rod 7, and the rotation of the rotating block 8 drives the U-shaped cleaning scraper 30 to rotate. The U-shaped cleaning scraper 30 rotates to scrape off the dirt on the inner wall and the bottom of the inner cavity of the heating furnace body 1, and the rotation of the U-shaped cleaning scraper 30 will drive the detergent to roll, so that the detergent flushes the inner wall and the bottom of the inner cavity of the heating furnace body 1, so that with the cooperation of the U-shaped cleaning scraper 30 and the rolling detergent, the dirt on the inner wall and the bottom of the inner cavity of the heating furnace body 1 is separated, thereby improving the cleaning effect. Finally, the slag discharge cover 4 is opened to discharge the detergent mixed with dirt from the slag discharge pipe 3.

[0044] Example 2

[0045] The main clamping member includes two fixed blocks 10 mounted at the bottom of the rotating block 8. A limiting rod 11 is mounted between the two fixed blocks 10. Two L-shaped clamping blocks 14 are slidably engaged with the limiting rod 11. A bidirectional threaded rod 12 is rotatably engaged between the two fixed blocks 10. A crank 13 is mounted at one end of the bidirectional threaded rod 12. The two L-shaped clamping blocks 14 are threadedly engaged with the bidirectional threaded rod 12. The auxiliary clamping member is mounted on the L-shaped clamping block 14. The auxiliary clamping member includes a trapezoidal groove 15 provided on the L-shaped clamping block 14. A trapezoidal slider 16 is slidably engaged within the trapezoidal groove 15. A tension spring 17 is mounted between the bottom end of the trapezoidal slider 16 and the trapezoidal groove 15. A pressure plate 18 is mounted on the side of the trapezoidal slider 16. Ball bearings are provided on the clamping surfaces of the pressure plate 18 and the L-shaped clamping block 14. The cross-section of the pressure plate 18 on one side is a right-angled trapezoid.

[0046] Implementation process: When the metal plate needs to be fixed, the crank 13 is turned, and the crank 13 drives the two-way threaded rod 12 to rotate. The rotation of the two-way threaded rod 12 drives the two L-shaped clamping blocks 14 to move closer to each other, so that the distance between the two L-shaped clamping blocks 14 is close to the length of the metal plate. Then, by pulling the pressure plate 18 on one side, the metal plate is placed on the L-shaped clamping block 14, and the pressure plate 18 is released. Under the action of its corresponding tension spring 17, the pressure plate 18 performs a preliminary clamping on the left side of the metal plate, and by shaking the crank 13 again, the two-way threaded rod 12 drives the two L-shaped clamping blocks 14 to clamp the metal plate. At the same time, the inclined surface of the pressure plate 18 on the other side is squeezed, so that the pressure plate 18 drives the corresponding trapezoidal slider 16 to move, so that the right side of the metal plate can be inserted between the pressure plate 18 and the L-shaped clamping block 14, and under the action of its corresponding tension spring 17, the right side of the metal plate is preliminarily clamped, thereby improving the clamping effect.

[0047] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A heating furnace for metal surface treatment, characterized in that: include: A heating furnace body (1) is provided with a lifting member in the heating furnace body (1), a furnace cover (2) is installed on the top of the lifting member, a driving member is installed on the top of the furnace cover (2), a mounting groove (5) is provided at the bottom of the furnace cover (2), a rotating member is rotatably matched in the mounting groove (5), a U-shaped cleaning scraper (30) is installed on the rotating member, the driving member is matched with the mounting groove (5), a main clamping member is installed at the bottom of the rotating member, a secondary clamping member is provided on the main clamping member, a water spray assembly is installed on the top of the furnace cover (2), the output end of the water spray assembly is connected to the mounting groove (5), the output end of the water spray assembly is provided with a sealing assembly, a slag discharge pipe (3) connected to the heating furnace body (1) is provided on the side of the heating furnace body (1), and a slag discharge cover (4) is provided on the slag discharge pipe (3).

2. A heating furnace for metal surface treatment according to claim 1, characterized in that: The lifting member comprises a plurality of circular grooves (28) provided on the top of the heating furnace body (1). An electric telescopic rod (29) is installed in the circular groove (28). The top end of the electric telescopic rod (29) is fixedly connected to the furnace cover (2).

3. A heating furnace for metal surface treatment according to claim 1, characterized in that: The driving member comprises a motor (6) mounted on the top of the furnace cover (2); a connecting rod (7) is mounted on the output end of the motor (6); the connecting rod (7) is movably connected to the furnace cover (2); and the bottom end of the connecting rod (7) is fixedly connected to the rotating member.

4. A heating furnace for metal surface treatment according to claim 3, characterized in that: The rotating member comprises a rotating block (8) rotatably engaged in the mounting groove (5), a plurality of through holes (9) are provided on the rotating block (8), the bottom of the inner cavity of the rotating block (8) is fixedly connected to the connecting rod (7), the main clamping member is mounted on the bottom of the rotating block (8), and the U-shaped cleaning scraper (30) is fixedly connected to the rotating block (8).

5. A heating furnace for metal surface treatment according to claim 4, characterized in that: The main clamping member comprises two fixed blocks (10) installed at the bottom of the rotating block (8), a limiting rod (11) is installed between the two fixed blocks (10), two L-shaped clamping blocks (14) are slidably engaged on the limiting rod (11), a bidirectional threaded rod (12) is rotatably engaged between the two fixed blocks (10), a crank (13) is installed at one end of the bidirectional threaded rod (12), the two L-shaped clamping blocks (14) are threadedly engaged with the bidirectional threaded rod (12), and the auxiliary clamping member is arranged on the L-shaped clamping block (14).

6. A heating furnace for metal surface treatment according to claim 5, characterized in that: The auxiliary clamping member includes a trapezoidal groove (15) provided on an L-shaped clamping block (14), a trapezoidal slider (16) slidingly fitted in the trapezoidal groove (15), a tension spring (17) installed between the bottom end of the trapezoidal slider (16) and the trapezoidal groove (15), and a pressure plate (18) installed on the side of the trapezoidal slider (16).

7. The heating furnace for metal surface treatment according to claim 1, characterized in that: The water spray assembly comprises a water tank (19) mounted on the top of the furnace cover (2); a water injection pipe (20) connected to the water tank (19) is mounted on the top of the water tank (19); a top end of the water injection pipe (20) is threadedly engaged with a pipe cover (21); a water pump (22) is mounted on the side of the water tank (19); a water pump (22) connected to the water tank (19) is mounted on the water pump (22); a connecting pipe (23) is mounted on the water pump (22); and the connecting pipe (23) is connected to the mounting groove (5).

8. A heating furnace for metal surface treatment according to claim 7, characterized in that: The sealing assembly includes a circular chute (24) opened at one end of the connecting pipe (23), a sliding rod (25) slidingly fitted in the circular chute (24), a spring (26) installed between the top end of the sliding rod (25) and the circular chute (24), and a sealing cover (27) installed at the bottom of the sliding rod (25).

Citation Information

Patent Citations

  • Heating furnace for metal surface treatment

    CN210796562U