Expansion tank with protection structure

Abstract

The expansion tank with the protection structure comprises a tank body, and an air inlet and a water inlet are formed in the two ends of the tank body respectively. The diaphragm layer is arranged in the accommodating cavity in the tank body; the rubber liner is arranged in the diaphragm layer; the rubber liner is arranged in the diaphragm layer; the protection structure is arranged in the water inlet and is used for preventing the rubber inner container from expanding into the water inlet, and the protection structure is used for preventing the rubber inner container from expanding and deforming to block the water inlet after the rubber inner container is pre-filled with gas; therefore, the expansion tank cannot store water flow flowing into the expansion tank from high air pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion tanks, in particular to an expansion tank with a protective structure. Background Art

[0002] The working principle of the expansion tank is based on Boyle's gas law, which balances the pressure changes in the tank through the interaction between gas and liquid. Some expansion tanks on the market are used in hot water systems such as water heaters and boilers. They can store excess water in the hot water system and stabilize the pressure. When the pressure in the hot water system increases, the pressure in the system is greater than the pressure in the expansion tank, so the water in the hot water system flows from the high-pressure hot water system to the low-pressure expansion tank, and at the same time, the air pressure in the tank increases. When the water in the hot water system cools and the pressure in the system drops to lower than the pressure of the expansion tank, the water in the expansion tank flows from the high-pressure expansion tank to the low-pressure system.

[0003] During use, people found that when people pre-charged the expansion tank with a large amount of gas to increase the air pressure in the expansion tank, the large amount of gas would cause the rubber liner in the expansion tank to inflate and deform, thus extending into the water inlet, thereby blocking the water inlet and preventing the water source in the system from flowing into the expansion tank.

[0004] Based on the above reasons, it is necessary to improve the existing technology. Utility Model Content

[0005] 1. Technical Problems to be Solved

[0006] The present invention aims at the above-mentioned defects in the prior art and proposes an expansion tank with a protective structure to solve the problems raised in the above-mentioned background technology.

[0007] 2. Technical Solution

[0008] In order to solve the above technical problems, the utility model provides an expansion tank with a protective structure, comprising a tank body, wherein an air inlet and a water inlet are respectively provided at both ends of the tank body;

[0009] a diaphragm layer, the diaphragm layer being arranged in the inner cavity of the tank body;

[0010] It also includes a rubber liner, which is arranged inside the diaphragm layer;

[0011] A protective structure is provided in the water inlet and is used to prevent the rubber liner from expanding into the water inlet.

[0012] In the above technical solution, the tank body includes an upper tank body and a lower tank body connected to the upper tank body, the top of the lower tank body is provided with a protrusion, and the bottom end of the upper tank body is concavely provided with a concave portion used in conjunction with the protrusion.

[0013] In the above technical solution, a plurality of convex portions are provided on the rubber liner, and the positions of the convex portions correspond to the water inlet.

[0014] In the above technical solution, the protective structure is a baffle, and a plurality of through holes are provided on the baffle.

[0015] In the above technical solution, a flange is provided at the bottom of the water inlet and is locked with the diaphragm layer.

[0016] In the above technical solution, a sealing ring is provided between the diaphragm layer and the flange.

[0017] 3. Beneficial Effects

[0018] Compared with the prior art, the present invention has the following beneficial effects: the present invention uses a protective structure to prevent the rubber liner from expanding and deforming after pre-filling with gas, blocking the water inlet, causing the water inlet to be blocked, thereby making it impossible for the expansion tank to store water flowing from high pressure into the expansion tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the cross-sectional side view structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the cross-section structure of the present invention.

[0022] Figure 4 It is a schematic diagram of the explosion structure of the utility model.

[0023] In the figure: 1 is the tank body, 10 is the air inlet, 11 is the water inlet, 12 is the upper tank body, 13 is the lower tank body, 100 is the flange, 101 is the sealing ring, 120 is the recessed part, 130 is the protrusion, 2 is the diaphragm layer, 3 is the rubber liner, 30 is the protrusion, 4 is the protective structure, and 40 is the through hole. DETAILED DESCRIPTION

[0024] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] See also Figure 1-4 The utility model provides an expansion tank with a protective structure, comprising a tank body 1, wherein an air inlet 10 and a water inlet 11 are respectively provided at both ends of the tank body 1;

[0026] A diaphragm layer 2, the diaphragm layer 2 being arranged in the inner cavity of the tank body 1;

[0027] It also includes a rubber liner 3, which is arranged inside the diaphragm layer 2;

[0028] The protective structure 4 is disposed in the water inlet 11 and is used to prevent the rubber liner 3 from expanding into the water inlet 11 .

[0029] In the above structure, the user pre-fills a large amount of gas from the air inlet so that the pre-pressure in the expansion tank meets the standard. At the same time, the rubber liner is expanded and deformed by the large amount of gas, and when it extends toward the water inlet, it is blocked by the protective structure provided on the water inlet, ensuring that the expanded and deformed rubber liner cannot extend into the water inlet and thus block the water inlet, so that when the air pressure outside the expansion tank is greater than that inside the expansion tank, the external water flow can flow from the water inlet into the expansion tank.

[0030] Specifically, the tank body 1 includes an upper tank body 12 and a lower tank body 13 connected to the upper tank body 12. The top of the lower tank body 13 is provided with a protrusion 130, and the bottom end of the upper tank body 12 is concavely provided with a recess 120 used in conjunction with the protrusion 130. The cooperation of the protrusion and the recess can accurately control the relative position between the upper and lower tank bodies, ensuring the precise assembly between the tank bodies. At the same time, this connection method of using the protrusion and the recess can increase the tightness of the connection, thereby improving the overall strength and durability of the tank body.

[0031] Specifically, the rubber liner 3 is provided with a plurality of protrusions 30, and the position of the protrusions 30 corresponds to the water inlet 11. The main function of the protrusions is to get stuck at the water inlet when the rubber liner expands. This can increase the thickness of the rubber liner at the pressure position of the water inlet to protect the rubber liner, and can also ensure that the protrusions press around the water inlet when the rubber liner expands and deforms, thereby ensuring that there is enough space for water to flow from the water inlet into the expansion tank.

[0032] Specifically, the protective structure 4 is a baffle, and a plurality of through holes 40 are provided on the baffle. The baffle structure is simple and cheap, which can reduce costs. At the same time, the use of through holes can still allow water to pass through the water inlet, and the through holes can increase the aesthetics.

[0033] Specifically, a flange 100 is provided at the bottom of the water inlet 11 to be locked with the diaphragm layer 2. Using the flange to lock the diaphragm layer can ensure that the water inlet will not fall off due to force.

[0034] Specifically, a sealing ring 101 is provided between the diaphragm layer 2 and the flange 100 . The use of the sealing ring can increase the overall sealing performance of the expansion tank.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An expansion tank with a protective structure, comprising: A tank body (1), wherein both ends of the tank body (1) are respectively provided with an air inlet (10) and a water inlet (11); a diaphragm layer (2), wherein the diaphragm layer (2) is provided in an internal cavity of the tank body (1); and characterized in that it further comprises: A rubber liner (3), the rubber liner (3) being arranged inside the diaphragm layer (2); and a protective structure (4), the protective structure (4) being arranged in the water inlet (11) and being used to prevent the rubber liner (3) from expanding into the water inlet (11).

2. The expansion tank with a protective structure according to claim 1, characterized in that: The tank body (1) comprises an upper tank body (12) and a lower tank body (13) connected to the upper tank body (12); a protrusion (130) is provided on the top of the lower tank body (13); and a recess (120) is provided at the bottom end of the upper tank body (12) for use with the protrusion (130).

3. The expansion tank with a protective structure according to claim 1, characterized in that: A plurality of convex portions (30) are provided on the rubber liner (3), and the positions of the convex portions (30) correspond to the water inlet (11).

4. The expansion tank with a protective structure according to claim 1, characterized in that: The protective structure (4) is a baffle, and a plurality of through holes (40) are provided on the baffle.

5. The expansion tank with a protective structure according to claim 1, characterized in that: The bottom of the water inlet (11) is provided with a flange (100) which is engaged with the diaphragm layer (2).

6. The expansion tank with a protective structure according to claim 5, characterized in that: A sealing ring (101) is provided between the diaphragm layer (2) and the flange (100).

Images