Adjustable pressure tank

Abstract

The utility model provides an adjustable pressure tank, and belongs to the technical field of machinery. The pressure tank solves the problems that an existing pressure tank cannot adjust pressure and is not wide in application range. The adjustable pressure tank comprises a shell with a cavity and a cover fixedly connected to the upper end of the shell, the lower end of the shell is provided with a water inlet end communicated with the cavity, an elastic membrane is arranged between the shell and the cover, a connecting seat is axially arranged in the cover, an adjusting rod is inserted in the connecting seat, the lower end of the adjusting rod is fixedly connected with the elastic membrane, and the lower end of the adjusting rod is fixedly connected with the elastic membrane. A spring is arranged between the cover body and the adjusting rod, and a pressure adjusting assembly is arranged between the cover body and the adjusting rod and can adjust the distance between the adjusting rod and the cover body. The adjustable pressure tank has the advantages of being capable of adjusting pressure and wide in application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a pressure tank, in particular to an adjustable pressure tank. Background Art

[0002] The pressure tank is usually installed between the water distribution pump and the pipe network. After the water pump is started, it supplies water to the pipe network, and the excess water is stored in the tank, which causes the water level in the tank to rise, and the air in the tank is compressed, and the pressure increases accordingly. When the pressure in the tank reaches the specified upper limit pressure value, the indicator of the mechanical pressure gauge connected to the top of the tank by the pipeline connects to the upper limit contact, sends a signal, cuts off the power supply, and stops the pump. When the user continues to use water, the compressed air in the tank presses the water in the tank into the pipe network, the water level drops, and the air pressure in the tank also drops. When it drops to the required lower limit pressure value, the indicator of the mechanical pressure gauge connects to the lower limit contact, the relay operates, the motor and the power supply are connected, and the water pump restarts.

[0003] For example, a water supply pressure tank (application number: 201320256249.X) disclosed in a Chinese patent document includes a bowl-shaped middle body with a concave cavity and a cup-shaped head body buckled on the upper part of the middle body, the lower part of the middle body has a connection port connected to the concave cavity, an elastic diaphragm for closing the concave cavity is provided at the buckle of the middle body and the head body, an axially extending guide seat is provided in the head body, a hollow guide rod is passed through the guide seat, the outer end of the guide rod is fixedly connected to the elastic diaphragm, and a reset member is provided between the head body and the elastic diaphragm to reset the elastic diaphragm after deformation. However, since the water supply pressure tank is not provided with a pressure adjustment structure, it cannot adjust the pressure, so its application range is not wide. Summary of the invention

[0004] The utility model aims to solve the above problems in the prior art and proposes an adjustable pressure tank which can adjust the pressure and has a wide application range.

[0005] The purpose of the utility model can be achieved through the following technical solutions: an adjustable pressure tank, comprising a shell with a cavity and a cover body fixedly connected to the upper end of the shell, the lower end of the shell has a water inlet end connected to the cavity, an elastic diaphragm is provided between the shell and the cover body, and it is characterized in that an axially arranged connecting seat is provided in the cover body, an adjusting rod is inserted in the connecting seat, the lower end of the adjusting rod is fixedly connected to the elastic diaphragm, a spring is provided between the cover body and the adjusting rod, a pressure regulating assembly is provided between the cover body and the adjusting rod, and the pressure regulating assembly can adjust the distance of the adjusting rod relative to the cover body.

[0006] The adjustable pressure tank is installed on the water pump and the pipeline. When the valve is closed, water flows into the cavity to increase the pressure in the cavity. The elastic diaphragm squeezes the spring and pushes the adjusting rod, so that the pressure in the cavity is balanced with the elastic force of the spring, thereby achieving internal balance of the cavity. When the valve is opened with water in the pipeline, the pressure in the cavity decreases, and the spring pushes the elastic diaphragm to return to its original position to discharge the water in the cavity, thereby achieving the effect of buffering and stabilizing pressure. The elastic force of the spring is adjusted by the adjusting component to adjust the pressure, thereby having the advantage of a wide range of applications.

[0007] In the above-mentioned adjustable pressure tank, the pressure regulating assembly includes a pressure regulating screw threadedly connected to the cover body, and the lower end of the pressure regulating screw is axially connected to the upper end of the regulating rod. The pressure regulating assembly is a pressure regulating screw, which has the advantages of simple structure and low manufacturing cost.

[0008] In the above-mentioned adjustable pressure tank, the pressure regulating assembly includes an electric push rod fixedly connected to the cover body, and the output rod of the electric push rod is fixedly connected to the regulating rod. The pressure regulating assembly adopts the electric push rod, which has the advantages of convenient adjustment and simple structure.

[0009] In the above-mentioned adjustable pressure tank, a water inlet joint is fixedly connected to the water inlet end, and the water inlet joint and the shell are an integral structure. The water inlet joint and the shell are an injection-molded integral structure, which has the advantages of being easy to manufacture and not prone to leakage.

[0010] In the above-mentioned adjustable pressure tank, the inner side wall of the shell is provided with a plurality of strip-shaped reinforcing ribs. By providing the reinforcing ribs, the strength of the shell is improved, thereby increasing the service life.

[0011] In the above-mentioned adjustable pressure tank, the lower end of the adjusting rod has a coaxially arranged connection disk, the lower side of the connection disk is fixedly connected with a fixing seat, and the middle part of the elastic diaphragm is squeezed between the fixing seat and the connection disk. The above-mentioned arrangement has a good positioning effect on the elastic diaphragm and avoids the elastic diaphragm from moving in series.

[0012] In the above-mentioned adjustable pressure tank, the wall thickness of the shell is 2.5-5.5 mm. By increasing the wall thickness of the shell, the service life of the adjustable pressure tank is increased.

[0013] In the above-mentioned adjustable pressure tank, the lower end surface of the connection plate is an arc-shaped surface. The lower end surface of the connection plate is an arc-shaped surface, which has a protective effect on the elastic diaphragm.

[0014] In the above-mentioned adjustable pressure tank, the cover body and the shell are fixedly connected by screws. The cover body and the shell are fixedly connected by screws, which has the advantages of simple structure and convenient disassembly and assembly.

[0015] Compared with the prior art, this adjustable pressure tank has the following advantages:

[0016] 1. The elastic force of the spring is adjusted by adjusting the component to adjust the pressure, which has the advantage of a wide range of applications;

[0017] 2. The pressure regulating assembly is a pressure regulating screw threadedly connected to the cover body, and the lower end of the pressure regulating screw is axially connected to the upper end of the regulating rod, which has the advantages of simple structure and low manufacturing cost;

[0018] 3. The voltage regulating component adopts an electric push rod, which has the advantages of convenient adjustment and simple structure;

[0019] 4. The water inlet joint and the shell are an integral injection-molded structure, which is easy to manufacture and not prone to leakage.

[0020] 5. The middle part of the elastic diaphragm is squeezed between the fixing seat and the connecting plate, which has a good positioning effect on the elastic diaphragm and avoids the elastic diaphragm from moving in series. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional schematic diagram of the adjustable pressure tank.

[0022] Figure 2 It is a cross-sectional schematic diagram of another embodiment of the adjustable pressure tank.

[0023] In the figure, 1, shell; 1a, water inlet end; 1b, reinforcing rib; 2, cover; 2a, connecting seat; 3, elastic diaphragm; 4, adjusting rod; 4a, connecting plate; 5, spring; 6, pressure regulating assembly; 6a, pressure regulating screw; 6b, electric push rod; 7, water inlet joint; 8, fixing seat. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] like Figure 1 As shown, the adjustable pressure tank comprises a shell 1 having a cavity and a cover 2 fixedly connected to the upper end of the shell 1, the lower end of the shell 1 has a water inlet end 1a connected to the cavity, an elastic diaphragm 3 is arranged between the shell 1 and the cover 2, an axially arranged connecting seat 2a is arranged in the cover 2, an adjusting rod 4 is inserted in the connecting seat 2a, the lower end of the adjusting rod 4 is fixedly connected to the elastic diaphragm 3, a spring 5 is arranged between the cover 2 and the adjusting rod 4, a pressure regulating assembly 6 is arranged between the cover 2 and the adjusting rod 4, and the pressure regulating assembly 6 can adjust the distance of the adjusting rod 4 relative to the cover 2. The pressure regulating assembly 6 comprises a pressure regulating screw 6a threadedly connected to the cover 2, and the lower end of the pressure regulating screw 6a is axially connected to the upper end of the adjusting rod 4.

[0026] A water inlet connector 7 is provided at the water inlet end 1a. The water inlet connector 7 and the housing 1 are an integrally-injected structure, which has the advantages of being easy to manufacture and not prone to leakage.

[0027] The wall thickness of the shell 1 is 2.5-5.5 mm, which increases the service life of the adjustable pressure tank. The inner wall of the shell 1 is provided with a plurality of strip-shaped reinforcing ribs 1b, which increases the strength of the shell 1 and thus increases the service life. The cover 2 is fixedly connected to the shell 1 by screws, which has the advantages of simple structure and convenient disassembly and assembly.

[0028] The lower end of the adjusting rod 4 has a coaxially arranged connecting disk 4a, the lower side of the connecting disk 4a is fixedly connected with a fixing seat 8, and the middle part of the elastic diaphragm 3 is squeezed between the fixing seat 8 and the connecting disk 4a, which has a good positioning effect on the elastic diaphragm 3 and prevents the elastic diaphragm 3 from moving in series. The lower end surface of the connecting disk 4a is an arc surface, which has a protective effect on the elastic diaphragm 3.

[0029] The adjustable pressure tank is installed on the water pump and the pipeline. When the valve is closed, water flows into the cavity to increase the pressure in the cavity. The elastic diaphragm 3 squeezes the spring 5 and pushes the adjusting rod 4, so that the pressure in the cavity is balanced with the elastic force of the spring 5, and the balance inside the cavity is achieved. When the valve is opened with water in the pipeline, the pressure inside the cavity is reduced, and the spring 5 pushes the elastic diaphragm 3 to return to its original position to discharge the water in the cavity, which plays a role in buffering and stabilizing pressure. The elastic force of the spring 5 is adjusted by rotating the pressure regulating screw 6a to adjust the pressure, and the pressure has the advantage of a wide range of applications.

[0030] As another way, Figure 2 As shown, the voltage regulating assembly 6 includes an electric push rod 6b fixedly connected to the cover body 2, and the output rod of the electric push rod 6b is fixedly connected to the regulating rod 4, which has the advantages of convenient adjustment and simple structure.

[0031] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0032] Although this article uses more terms such as housing 1, water inlet end 1a, reinforcing rib 1b, cover 2, connecting seat 2a, elastic diaphragm 3, adjusting rod 4, connecting plate 4a, spring 5, pressure regulating assembly 6, pressure regulating screw 6a, electric push rod 6b, water inlet joint 7, fixing seat 8, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An adjustable pressure tank, comprising a shell (1) having a cavity and a cover (2) fixedly connected to the upper end of the shell (1), wherein the lower end of the shell (1) has a water inlet end (1a) connected to the cavity, and an elastic diaphragm (3) is provided between the shell (1) and the cover (2), characterized in that: The cover body (2) has an axially arranged connecting seat (2a), an adjusting rod (4) is inserted into the connecting seat (2a), the lower end of the adjusting rod (4) is fixedly connected to the elastic diaphragm (3), a spring (5) is arranged between the cover body (2) and the adjusting rod (4), a pressure regulating assembly (6) is arranged between the cover body (2) and the adjusting rod (4), and the pressure regulating assembly (6) can adjust the distance of the adjusting rod (4) relative to the cover body (2).

2. The adjustable pressure tank according to claim 1, characterized in that: The pressure regulating assembly (6) comprises a pressure regulating screw (6a) threadedly connected to the cover body (2), and the lower end of the pressure regulating screw (6a) is axially connected to the upper end of the regulating rod (4).

3. The adjustable pressure tank according to claim 1, characterized in that: The voltage regulating assembly (6) comprises an electric push rod (6b) fixedly connected to the cover body (2), and the output rod of the electric push rod (6b) is fixedly connected to the regulating rod (4).

4. The adjustable pressure tank according to claim 1, 2 or 3, characterized in that: A water inlet joint (7) is provided at the water inlet end (1a), and the water inlet joint (7) and the housing (1) are an integral structure.

5. The adjustable pressure tank according to claim 1, 2 or 3, characterized in that: The inner side wall of the shell (1) is provided with a plurality of strip-shaped reinforcing ribs (1b).

6. The adjustable pressure tank according to claim 1, 2 or 3, characterized in that: The lower end of the adjusting rod (4) has a coaxially arranged connecting disk (4a), the lower side of the connecting disk (4a) is fixedly connected to a fixing seat (8), and the middle part of the elastic diaphragm (3) is squeezed between the fixing seat (8) and the connecting disk (4a).

7. The adjustable pressure tank according to claim 1, 2 or 3, characterized in that: The wall thickness of the shell (1) is 2.5-5.5 mm.

8. The adjustable pressure tank according to claim 6, characterized in that: The lower end surface of the connecting plate (4a) is an arc-shaped surface.

9. The adjustable pressure tank according to claim 1, 2 or 3, characterized in that: The cover body (2) and the shell body (1) are fixedly connected via screws.

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