Diaphragm type pressure barrel

Abstract

The utility model relates to the technical field of pressure tanks, in particular to a diaphragm type pressure barrel. A joint is arranged at the lower end of the valve body; an end opening of the rubber liner is buckled on the joint; a mortise groove is formed in the lower end surface of the joint; a mounting cover is screwed on the outer wall of the joint in a threaded manner, a water inlet pipe is arranged at the axis of the mounting cover, and a tenon matched with the mortise groove is arranged on the upper end surface of the mounting cover. The joint is provided with the mortise groove, and the mounting cover is provided with the tenon, so that the joint and the open end of the rubber liner form a multi-bending mounting point due to the mortise and tenon structure, the mounting connection tightness can be improved, and the mounting leakproofness can also be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure tank technical field especially relates to a diaphragm type pressure bucket. BACKGROUND

[0002] In secondary water supply and frequency constant pressure water supply equipment, a kind of accessory that is indispensable is expansion tank, also called pressure tank, pressure bucket, pressure tank.Diaphragm type pressure tank is by steel shell, rubber diaphragm inner container constitutes energy storage device.Rubber inner container divides pressure tank internal space, forms air chamber and water chamber.

[0003] After water pump starts, water is supplied to pipe network, and the redundant water is filled into rubber inner container, the gas sealed in tank is compressed, according to boyle gas law, the volume of gas is smaller after being compressed, and the pressure is larger, thereby energy is stored.When the pressure in tank reaches the upper limit pressure value specified, the index of electric contact pressure gauge connected with tank top is connected with upper limit contact, signal is sent, power is cut off, and pump is stopped.User continues to use water, and compressed air in tank pressurizes the water in rubber inner container into pipe network, and the pressure drops.When the pressure drops to lower limit pressure value, the index of electric contact pressure gauge is connected with lower limit contact, and relay operates, motor is connected with power supply, and water pump starts working again.

[0004] After long-term use of pressure tank, the locking installation of rubber inner container is easy to loosen, thereby affecting sealing, leading to water leakage and affecting the effect of pressure tank in pipe network.

[0005] Therefore, the utility model provides a diaphragm type pressure bucket, improves the installation sealing of rubber inner container. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the problems in prior art and provides a diaphragm type pressure bucket.

[0007] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A diaphragm type pressure bucket, including tank body, rubber inner container, tank body is equipped with valve gas pipe and pressure gauge, the lower end of tank body is equipped with connector, and rubber inner container port is buckled on connector, the lower end surface of connector is equipped with mortise, and the outer wall of connector is screwed with installation cover, the shaft center of installation cover is equipped with water inlet pipe, and the upper end surface of installation cover is equipped with tenon matched with mortise.

[0009] Preferably, it further includes compression ring embedded in mortise against rubber inner container side surface, and the difference between the inner diameter and the outer diameter of compression ring is less than the width of mortise minus the thickness of rubber inner container.

[0010] Preferably, the outer edge surface of the lower end surface of the connector is provided with a ring groove, and the rubber inner container port is buckled at the ring groove.

[0011] Preferably, the outer edge surface of the ring groove is provided with a protrusion.

[0012] Preferably, the rubber liner port is bound on the ring groove.

[0013] Preferably, the compression ring is a rubber ring.

[0014] Preferably, the outer edge surface of the mounting cover is provided with a friction surface.

[0015] Preferably, the outer wall of the part of the water inlet pipe extending into the joint is provided with a rubber ring.

[0016] Preferably, the inner wall of the joint is provided with a limiting ring matched with the rubber ring.

[0017] Preferably, it further comprises a replaceable support for supporting the tank.

[0018] Compared with the prior art, the diaphragm type pressure barrel has the following beneficial effects:

[0019] 1. The mortise is arranged on the joint, and the tenon is arranged on the mounting cover, so that the joint and the open end of the rubber liner form a plurality of bending installation points due to the mortise and tenon structure, thereby improving the installation connection tightness and the installation airtightness.

[0020] 2. The protective mesh cover in the spherical shape is arranged in the tank, the maximum expansion range of the rubber liner is limited, and the rubber liner is prevented from cracking.

[0021] Other advantages, objects and features of the present application will be described in the subsequent description; and to some extent, based on the study of the following, it will be obvious to those skilled in the art; or, it can be taught from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a three-dimensional schematic diagram of the present application Figure 1 .

[0023] Figure 2 is a three-dimensional schematic diagram of the present application Figure 2 .

[0024] Figure 3 is a front view of the present application.

[0025] Figure 4 is a partial schematic view of the present application Figure 3 A.

[0026] Figure 5 is a partial schematic view of the present application Figure 4 B.

[0027] Figure 6 The utility model discloses a Figure 3 The utility model discloses a

[0028] Figure 7 The utility model discloses a

[0029] Figure 8 The utility model discloses a

[0030] In the drawing: 1, tank body; 2, rubber inner bag; 3, joint; 4, water inlet pipe; 5, mortise; 6, tenon; 7, press ring; 8, rubber ring; 9, limiting ring; 10, annular groove; 11, binding piece; 12, support; 13, net cover; 14, friction surface; 15, mounting cover. DETAILED DESCRIPTION

[0031] The technical scheme in the utility model embodiment will be clearly and completely described below with reference to the drawings in the utility model embodiments. Figures 1-8 It is apparent that the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.

[0032] Embodiment 1, in order to solve the problems in the prior art, the utility model provides a diaphragm type pressure barrel, including steel tank body 1, rubber inner bag 2. The tank body 1 upper end is equipped with the air pipe with valve and pressure gauge, and the tank body 1 lower end is equipped with the installation port.

[0033] The installation port of the tank body 1 lower end is equipped with the joint 3, and the joint 3 can be integrally formed with the tank body 1, can be welded, and can be fastened and installed together through the flange structure. The outer edge surface of the joint 3 is provided with the mounting cover 15, and the mounting cover 15 is provided with the water inlet pipe 4 penetrating the end surface of the mounting cover 15. The lower end surface of the joint 3 is provided with the mortise 5, and the upper end surface of the mounting cover 15 is provided with the tenon 6 matched with the mortise 5.

[0034] According to the above technical scheme:

[0035] When installing, the rubber inner bag 2 is in the tank body 1, but the open end of the rubber inner bag 2 is buckled on the lower end surface of the joint 3. When the mounting cover 15 is screwed on the joint 3, the tenon 6 of the mounting cover 15 gradually embeds into the mortise 5 against the open end side wall part of the rubber inner bag 2. The mortise 5 and the tenon 6 constitute the mortise and tenon structure, so that the rubber inner bag 2 installation is bent in many places, which can increase the tightness of the installation, and also can improve the airtightness of the installation part.

[0036] In this embodiment, a compression ring 7 is also included. The compression ring 7 is an external part. When the rubber liner 2 is buckled on the joint 3, the rubber liner 2 is first pressed against the mortise 5 by the compression ring 7 to pre-treat the mortise of the rubber liner 2, so that the rubber liner 2 is not directly pressed against the mortise by the tenon 6 of the installation cover 15, which may cause the rubber liner 2 to be deformed and separated from the joint 3. The difference between the inner and outer diameters of the compression ring 7 is less than the width of the mortise 5 minus the thickness of the rubber liner 2, which facilitates the insertion of the rubber liner 2 into the mortise 5. The compression ring 7 is rounded to avoid damaging the rubber liner 2.

[0037] In this embodiment, the outer edge surface of the lower end of the joint 3 is provided with a ring groove 10, and the rubber liner 2 is buckled at the ring groove 10 to improve the tightness of the initial buckling of the rubber liner 2. A variable diameter shaft is formed at the lower end of the outer edge surface of the joint 3 by the ring groove 10, so that the buckling of the rubber liner 2 does not affect the screwing installation of the installation cover 15.

[0038] In this embodiment, the outer edge surface of the ring groove 10 is provided with a protrusion. After the rubber liner 2 is buckled at the ring groove 10, the port of the open end of the rubber liner 2 is turned over to further improve the tightness of the buckling.

[0039] In this embodiment, the port of the open end of the rubber liner 2 is bound by a binding member 11 such as a strap, a rope, a steel wire, and a steel cable, and is bound on the ring groove 10, so that the port of the rubber liner 2 is fixed, which can weaken the elastic buckling of the rubber liner 2 when it is inserted into the mortise 5, and can reduce the influence of the contraction of the rubber liner 2 into the tank due to the expansion of the rubber liner 2 after being washed on the installation tightness of the joint 3.

[0040] In this embodiment, the compression ring 7 is a rubber ring, so that the compression ring 7 can be elastically deformed, and the compression ring 7 and the rubber liner 2 form an elastic sealing member at the part of the rubber liner 2 inserted into the mortise 5, which improves the tightness.

[0041] In this embodiment, the outer edge surface of the installation cover 15 is provided with a friction surface 14 to facilitate the installation and screwing of the installation cover 15.

[0042] In this embodiment, the outer wall of the part of the water inlet pipe 4 inserted into the joint 3 is provided with a rubber ring 8 as a sealing member to directly form a first level of sealing between the inner wall of the joint 3 and the outer wall of the water inlet pipe 4, and to cooperate with the part of the rubber liner 2 inserted into the mortise 5 and the tenon 6 on the outside to form a second level of sealing, which improves the installation tightness.

[0043] In the embodiment, the inner wall of the joint 3 is provided with a limiting ring 9 matched with the sealing ring, and a gap fit can be formed between the outer wall of the limiting ring 9 and the inner wall of the rubber liner 2 mounted on the joint 3. In this way, when the cover 15 is screwed and installed, the problem that the rubber liner 2 is pushed into the inside of the tank body 1 due to the friction between the rubber ring 8 and the rubber liner 2, and the connection between the rubber liner 2 and the joint 3 is loosened, is reduced. After the cover 15 is installed, the rubber ring 8 is elastically deformed by abutting against the limiting ring 9, and the sealing is formed.

[0044] In the embodiment, the tank body 1 is provided with a spherical protective mesh cover 13, and the mesh cover 13 is breathable. The maximum expansion range of the rubber liner 2 is limited by the mesh cover 13, and the rubber liner 2 is prevented from being cracked due to expansion.

[0045] In the embodiment, the replaceable reinforced engineering thermoplastic support is further included for supporting the tank body 1.

[0046] The above is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

[0047] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0048] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model. The person skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A diaphragm pressure tank comprising a tank body (1), a rubber liner (2), a valve pipe and a pressure gauge provided on the tank body (1), characterized in that, The lower end of the tank body (1) is provided with a joint (3), the rubber inner bag (2) is buckled on the joint (3), the lower end surface of the joint (3) is provided with a mortise (5), the outer wall of the joint (3) is screwed with a mounting cover (15), the axis of the mounting cover (15) is provided with a water inlet pipe (4), and the upper end surface of the mounting cover (15) is provided with a tenon (6) matched with the mortise (5).

2. A diaphragm pressure vessel according to claim 1, wherein Further comprising a pressing ring (7) embedded in the mortise (5) against the side surface of the rubber inner bag (2), the difference between the inner diameter and the outer diameter of the pressing ring (7) is less than the width of the mortise (5) minus the thickness of the rubber inner bag (2).

3. A diaphragm pressure vessel according to claim 1, wherein The outer edge surface of the lower end surface of the joint (3) is provided with a ring groove (10), and the port of the rubber inner bag (2) is buckled at the ring groove (10).

4. A diaphragm pressure vessel according to claim 3, wherein The outer edge surface of the ring groove (10) is provided with a protrusion.

5. A diaphragm pressure vessel according to claim 4, wherein The port of the rubber inner bag (2) is buckled on the ring groove (10).

6. A diaphragm pressure vessel according to claim 2, wherein The pressing ring (7) is a rubber ring.

7. A diaphragm pressure vessel according to claim 1, wherein The outer edge surface of the mounting cover (15) is provided with a friction surface (14).

8. A diaphragm pressure vessel according to claim 1, wherein The outer wall of the part of the water inlet pipe (4) extending into the joint (3) is provided with a rubber ring (8).

9. A diaphragm pressure vessel according to claim 8, wherein The inner wall of the joint (3) is provided with a limiting ring (9) matched with the rubber ring (8).

10. A diaphragm pressure vessel according to claim 1, wherein Further comprising a replaceable support (12) for supporting the tank body (1).

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