A sealing structure for a thick film heater

Abstract

This utility model relates to the field of thick film heater technology and discloses a sealing structure for a thick film heater. In use, the external water supply pipe is first inserted into the inlet end and tightened via the connecting thread. The water supply pipe then compresses the sealing gasket, causing a telescopic spring to contract the gasket, thus separating the gasket from the sealing block. This allows water to flow into the thick film heater from the inlet end. The telescopic spring also pushes the sealing gasket against the end of the water supply pipe, improving the sealing effect and preventing water from flowing out through the gap between the water supply pipe and the inlet end. When the external water supply pipe ages and breaks and needs replacement, it can be removed. When the water supply pipe is removed, the telescopic spring causes the sealing gasket to reset, causing it to abut against the sealing block and seal the inlet end, preventing hot water from flowing out during replacement and causing injury. This improves the practicality of the sealing structure of the thick film heater.

Description

Technical Field

[0001] This utility model relates to the field of thick film heater technology, specifically a sealing structure for a thick film heater. Background Technology

[0002] Thick film heating technology is a heating device made by printing an insulating medium, heating resistor, conductor and insulating protective layer on a substrate, such as stainless steel plate, ceramic, glass or aluminum plate, using thick film screen printing process, and then sintering at high temperature.

[0003] The existing patent CN220896860U discloses a thick-film heater, including a tube and a thick-film heating element surrounding the tube. A pressure relief device is provided at one end of the tube and the thick-film heating element. The pressure relief device includes an inlet cap, a front cap, and an elastic reset member. The front cap is sealed at one end of the tube, and the inlet cap is sealed at one end of the thick-film heating element. The elastic reset member is installed between the front cap and the inlet cap. When the tube is pressurized, the tube can deform the elastic reset member and press it against the inlet cap, thereby releasing the high-pressure gas inside the tube. The tube returns to its initial state under the action of the elastic reset member. Specifically, when the thick-film heating element is working, it increases the internal pressure of the tube. When the internal pressure reaches a certain level, the tube squeezes the elastic reset member, thereby releasing the high-pressure gas inside the tube. When the internal pressure decreases, the tube returns to its initial state under the action of the elastic reset member, ensuring product safety and improving the safety factor.

[0004] However, the existing technology, patent number CN220896860U, requires the inlet to be connected to an external water pipe to provide a water source. When the external water pipe ages and breaks and needs to be replaced, the water inside the thick film heater will flow out. If it is hot water, it may cause injury to maintenance personnel. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a sealing structure for a thick film heater, in order to solve the problem mentioned in the background art that when the external water pipe is aged and damaged and needs to be replaced, the water inside the thick film heater will flow out, and if it is hot water, it may cause injury to maintenance personnel.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for a thick film heater, comprising a thick film heater body, one end of which is provided with a water inlet, and the other end of which is provided with a water outlet. A sealing block is provided inside the water inlet, and movable sealing mechanisms are provided on both sides of the sealing block.

[0009] Preferably, the movable sealing mechanism includes a fixed block, a telescopic spring, a sealing gasket, and a guide sleeve. Fixed blocks are provided on both sides of the inside of the water inlet end. A telescopic spring is provided at one end of the fixed block near the sealing block. A sealing gasket is provided at one end of the telescopic spring. A guide sleeve is provided inside the telescopic spring. The sealing gasket and the sealing block are the same size and fit tightly, which can effectively improve the sealing performance and prevent water from flowing out. The guide sleeve can provide guidance for the telescopic spring and prevent the telescopic spring from deforming and misaligning during long-term use, thus affecting the sealing effect. The sealing block has a circular structure, and the sealing gasket has an arc-shaped structure.

[0010] Preferably, the inner wall of the water inlet is provided with connecting threads, and one end of the sealing block is provided with a connecting rod. The sealing block is fixed at the inner center position of the water inlet by the connecting rod, and the connecting threads facilitate the connection of an external water pipe.

[0011] Preferably, an upper protective shell is provided at the outer end of the thick film heater body, and a lower protective shell is provided at the lower end of the upper protective shell. The installation of the upper and lower protective shells can provide protection for the thick film heater and prevent damage to the thick film heater.

[0012] Preferably, upper mounting plates are provided on both sides of the upper protective shell, and lower mounting plates are provided on both sides of the lower protective shell. The upper and lower mounting plates are connected and fixed by fixing bolts. The fixing bolts can penetrate the upper and lower mounting plates and be tightened to fix the upper and lower protective shells.

[0013] Preferably, the outer end of the thick film heater body is wrapped with a flexible graphite insulation layer, and the outer end of the flexible graphite insulation layer is wrapped with an asbestos insulation layer. The flexible graphite insulation layer and the asbestos insulation layer can prevent heat loss inside the thick film heater and improve the heat insulation effect, making the heating efficiency of the thick film heater higher.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The sealing structure of this thick film heater is designed so that, during use, the external water supply pipe is first inserted into the inlet end and tightened by the connecting thread. When the external water supply pipe is tightened, the water pipe moves towards the inlet end, which squeezes the sealing gasket. This causes the telescopic spring to cause the sealing gasket to contract, thus separating the sealing gasket from the sealing block. This allows water to flow into the thick film heater from the inlet end. The telescopic spring also pushes the sealing gasket against the end of the water supply pipe, thereby improving the sealing effect and preventing water from flowing out from the gap between the water supply pipe and the inlet end. When the external water supply pipe ages and is damaged and needs to be replaced, it can be removed. When the water supply pipe is removed, the telescopic spring causes the sealing gasket to reset, thus causing the sealing gasket to abut against the sealing block and sealing the inlet end. This prevents hot water from flowing out during replacement and causing injury to personnel, thus improving the practicality of the sealing structure of the thick film heater.

[0016] 2. The sealing structure of this thick film heater, through the setting of fixing bolts, can penetrate and tighten the upper and lower mounting plates to fix the upper and lower protective shells. The installation of the upper and lower protective shells can protect the thick film heater and prevent damage. The setting of flexible graphite insulation layer and asbestos insulation layer can avoid heat loss inside the thick film heater and improve the heat insulation effect, making the heating efficiency of the thick film heater higher and improving the heat insulation effect of the sealing structure of the thick film heater. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the protective shell of this utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the water inlet end of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the water inlet end of this utility model.

[0021] In the diagram: 1. Thick film heater body; 2. Water inlet; 3. Water outlet; 4. Sealing block; 5. Fixing block; 6. Telescopic spring; 7. Sealing gasket; 8. Guide sleeve; 9. Connecting thread; 10. Connecting rod; 11. Upper protective shell; 12. Lower protective shell; 13. Upper mounting plate; 14. Lower mounting plate; 15. Fixing bolt; 16. Flexible graphite insulation layer; 17. Asbestos insulation layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution:

[0024] A sealing structure for a thick film heater includes a thick film heater body 1, with a water inlet 2 at one end of the thick film heater body 1 and a water outlet 3 at the other end of the thick film heater body 1. A sealing block 4 is provided inside the water inlet 2, and movable sealing mechanisms are provided on both sides of the sealing block 4.

[0025] In this embodiment, the preferred movable sealing mechanism includes a fixed block 5, a telescopic spring 6, a sealing gasket 7, and a guide sleeve 8. Fixed blocks 5 are provided on both sides of the inside of the water inlet end 2. A telescopic spring 6 is provided at one end of the fixed block 5 near the sealing block 4. A sealing gasket 7 is provided at one end of the telescopic spring 6. A guide sleeve 8 is provided inside the telescopic spring 6. The sealing gasket 7 and the sealing block 4 are the same size and fit tightly, which can effectively improve the sealing performance and prevent water from flowing out. The guide sleeve 8 can provide a guiding function for the telescopic spring 6 and prevent the telescopic spring 6 from deforming and misaligning under long-term use, thus affecting the sealing effect. The sealing block 4 has a circular structure, and the sealing gasket 7 has an arc-shaped structure.

[0026] In this embodiment, the inner wall of the water inlet 2 is preferably provided with a connecting thread 9, and one end of the sealing block 4 is provided with a connecting rod 10. The sealing block 4 is fixed at the inner center position of the water inlet 2 by the connecting rod 10. The connecting thread 9 facilitates the connection of an external water pipe.

[0027] In this embodiment, preferably, an upper protective shell 11 is provided at the outer end of the thick film heater body 1, and a lower protective shell 12 is provided at the lower end of the upper protective shell 11. The installation of the upper protective shell 11 and the lower protective shell 12 can provide protection for the thick film heater and prevent damage to the thick film heater.

[0028] In this embodiment, preferably, upper mounting plates 13 are provided on both sides of the upper protective shell 11, and lower mounting plates 14 are provided on both sides of the lower protective shell 12. The upper mounting plates 13 and lower mounting plates 14 are connected and fixed by fixing bolts 15. The fixing bolts 15 can penetrate the upper mounting plates 13 and lower mounting plates 14 and be tightened to fix the upper protective shell 11 and lower protective shell 12.

[0029] In this embodiment, the outer end of the thick film heater body 1 is preferably wrapped with a flexible graphite insulation layer 16, and the outer end of the flexible graphite insulation layer 16 is wrapped with an asbestos insulation layer 17. The flexible graphite insulation layer 16 and the asbestos insulation layer 17 can prevent heat loss inside the thick film heater and improve the heat insulation effect, making the heating efficiency of the thick film heater higher.

[0030] In this embodiment, the sealing structure of a thick film heater is installed by using fixing bolts 15 that penetrate the upper mounting plate 13 and the lower mounting plate 14 and are tightened to fix the upper protective shell 11 and the lower protective shell 12. The installation of the upper and lower protective shells 11 and 12 provides protection for the thick film heater, preventing damage. The flexible graphite insulation layer 16 and the asbestos insulation layer 17 prevent heat loss from the inside of the thick film heater and improve the insulation effect, resulting in higher heating efficiency. During use, the external water supply pipe is first inserted into the water inlet 2 and tightened using the connecting thread 9. Tightening the external water supply pipe... The water supply pipe will move towards the inside of the inlet 2. At this time, the water supply pipe will squeeze the sealing gasket 7, causing the telescopic spring 6 to drive the sealing gasket 7 to contract, thereby separating the sealing gasket 7 from the sealing block 4. This allows water to flow from the inlet 2 into the thick film heater. The telescopic spring 6 can also push the sealing gasket 7 against the end of the water supply pipe, thereby improving the sealing effect and preventing water from flowing out from the gap between the water supply pipe and the inlet 2. When the external water supply pipe is aged and damaged and needs to be replaced, the water supply pipe can be removed. When the water supply pipe is removed, the telescopic spring 6 drives the sealing gasket 7 to reset, thereby causing the sealing gasket 7 to abut against the sealing block 4 to seal the inlet 2 and prevent hot water from flowing out during replacement, which could cause injury to personnel.

[0031] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A sealing structure for a thick film heater, comprising a thick film heater body (1), characterized in that: One end of the thick film heater body (1) is provided with a water inlet (2), and the other end of the thick film heater body (1) is provided with a water outlet (3). A sealing block (4) is provided inside the water inlet (2), and movable sealing mechanisms are provided on both sides of the sealing block (4).

2. The sealing structure of a thick film heater according to claim 1, characterized in that: The movable sealing mechanism includes a fixed block (5), a telescopic spring (6), a sealing gasket (7), and a guide sleeve (8). Fixed blocks (5) are provided on both sides of the inside of the water inlet end (2). A telescopic spring (6) is provided at one end of the fixed block (5) near the sealing block (4). A sealing gasket (7) is provided at one end of the telescopic spring (6). A guide sleeve (8) is provided inside the telescopic spring (6).

3. The sealing structure of a thick film heater according to claim 2, characterized in that: The inner wall of the water inlet (2) is provided with a connecting thread (9), and one end of the sealing block (4) is provided with a connecting rod (10). The sealing block (4) is fixed to the inner center position of the water inlet (2) by the connecting rod (10).

4. The sealing structure of a thick film heater according to claim 3, characterized in that: The outer end of the thick film heater body (1) is provided with an upper protective shell (11), and the lower end of the upper protective shell (11) is provided with a lower protective shell (12).

5. The sealing structure of a thick film heater according to claim 4, characterized in that: The upper protective shell (11) is provided with upper mounting plates (13) on both sides, and the lower protective shell (12) is provided with lower mounting plates (14) on both sides. The upper mounting plates (13) and the lower mounting plates (14) are connected and fixed by fixing bolts (15).

6. The sealing structure of a thick film heater according to claim 5, characterized in that: The outer end of the thick film heater body (1) is wrapped with a flexible graphite insulation layer (16), and the outer end of the flexible graphite insulation layer (16) is wrapped with an asbestos insulation layer (17).

Images