Improved adjustable pressure tank

Abstract

The utility model provides an improved adjustable pressure tank, and belongs to the technical field of machinery. The problem that an existing pressure tank is poor in stability is solved. The improved adjustable pressure tank comprises a base, an air inlet barrel, a tank body arranged on the base and an air bag arranged in the tank body, the upper end of the tank body is fixedly connected with a connecting cylinder in a sealed mode, an air passing hole communicated with the tank body and the connecting cylinder is formed in the top of the tank body, and the lower end of the air inlet barrel is inserted into the upper end of the connecting cylinder and can slide up and down. The air inlet barrel is locked at the sliding position through a locking structure, a supporting ring is formed at the top of the connecting barrel, the axial section of the supporting ring is in an L shape, an annular groove with an upward notch is formed between the supporting ring and the air inlet barrel, and a rubber ring is arranged in the annular groove and abuts against the bottom face of the annular groove. And the inner and outer side surfaces of the rubber ring are respectively contacted and sealed with the outer side surface of the air inlet barrel and the inner side surface of the support ring. The improved adjustable pressure tank is stable in work.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field relates to a pressure tank especially an improved adjustable pressure tank. BACKGROUND

[0002] The pressure tank is used in the closed water circulation system, plays the role of balancing water quantity and pressure, avoids the frequent opening of the safety valve and the frequent water supplement of the automatic water supplement valve, does not need to build the water tower, and has small investment and small land occupation, adopts the automatic regulation of water and gas, automatic operation and energy saving, and still automatically connects with the tap water, can still supply water after power failure, does not need to be looked after for years after debugging, saves 70% of investment compared with building the water tower, saves 60% of investment compared with being built in the high-position water tank, saves the civil engineering investment, therefore, the pressure tank is widely applied.

[0003] The existing pressure tank structure is like the adjustable pressure tank (application number: 202022919649.7) proposed by the applicant before, including a base, a tank body provided on the base and a gas bag provided in the tank body, a connecting cylinder is sealingly and fixedly connected to the upper end of the tank body, a gas passing hole is provided at the top of the tank body and communicates the tank body and the connecting cylinder, a gas inlet bucket is sleeved on the connecting cylinder, and a seal is formed between the gas inlet bucket and the connecting cylinder, characterized in that the inner side wall of the lower end of the gas inlet bucket and the outer side wall of the connecting cylinder are matched and attached together, a block one is fixedly arranged on the outer wall of the gas inlet bucket horizontally, the block one has two and is symmetrically arranged along the center of the gas inlet bucket, a block two is fixedly arranged on the base, the block two has two and is respectively arranged opposite to the two blocks one, a screw rod is vertically arranged between the oppositely arranged block one and the block two, the upper end of the screw rod is fixedly connected with the block one, the lower end of the screw rod penetrates through the block two, two pressure caps are screw-connected to the lower end of the screw rod, and the two pressure caps are tightly pressed on the top wall and the bottom wall of the block two respectively, a ring groove is formed on the outer side wall of the connecting cylinder, the ring groove is square ring-shaped and coaxial with the connecting cylinder, a square sealing ring is arranged in the ring groove, and the outer side wall of the sealing ring is abutted with the inner wall of the gas inlet bucket.

[0004] In actual products, the gas inlet bucket and the connecting cylinder are made of stainless steel material, and in order to reduce the cost, the wall thickness of the gas inlet bucket and the connecting cylinder is not very large, so that the sealing ring is also relatively thin, which affects the sealing performance formed between the gas inlet bucket and the connecting cylinder, thereby affecting the working stability of the pressure tank. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in the prior art, and provides an improved adjustable pressure tank with stable work.

[0006] The utility model discloses a purpose can be realized through the following technical scheme: a kind of improved adjustable pressure tank, including base, air inlet bucket, be located on the tank body of base and be located in the air bag of tank body, the connecting cylinder is sealingly connected with the upper end of tank body, tank body top is equipped with the air hole of the intercommunication tank body and connecting cylinder, air inlet bucket lower end is inserted in the upper end of connecting cylinder and can slide up and down, and air inlet bucket is locked in sliding position using locking structure, its characterized in that, connecting cylinder top is formed with support ring, the axial section of support ring is L-shaped, support ring and air inlet bucket form a notch and set up annular groove upwards between, and annular groove and connecting cylinder coaxially set;Annular groove is equipped with rubber ring, rubber ring is pressed on the bottom surface of annular groove, the inner and outer sides of rubber ring are respectively in contact with the outer side of air inlet bucket and the inner side of support ring sealing.

[0007] Support ring is formed at the top of connecting cylinder, and support ring and air inlet bucket form annular groove for placing rubber ring, so that the thickness of rubber ring can be effectively increased during actual design, the service life of rubber ring is prolonged, and the rubber ring is more closely attached to air inlet bucket and support ring, respectively, the sealing performance between rubber ring and support ring and air inlet bucket is increased, and the working stability of the pressure tank is greatly enhanced.

[0008] In the improved adjustable pressure tank, a limiting structure is arranged on the support ring to limit the upward movement of the rubber ring, so that the rubber ring is stably limited in the annular groove, and the rubber ring is prevented from falling out when sliding on the air inlet bucket, and the working stability of the pressure tank is further enhanced.

[0009] In the improved adjustable pressure tank, the limiting structure includes a stop ring formed on the inner side wall of the support ring, and the stop ring is coaxially arranged with the support ring, a limiting groove is formed on the outer wall of the rubber ring, and the stop ring is arranged in the limiting groove. The stop ring and the limiting groove cooperate to effectively prevent the rubber ring from falling out of the annular groove, and have the advantages of simple structure and easy installation.

[0010] In the improved adjustable pressure tank, the axial section of the stop ring is in the shape of a circular arc.

[0011] In the improved adjustable pressure tank, the outer side wall of the support ring is recessed inward to form the stop ring on the inner side wall of the support ring.

[0012] As another solution, in the improved adjustable pressure tank, the limiting structure includes a pressing ring fixed on the top surface of the support ring, the pressing ring is sleeved on the air inlet bucket, and the pressing ring is pressed on the top surface of the rubber ring.

[0013] In the improved adjustable pressure tank, the rubber ring is completely in the annular groove to protect the rubber ring and prolong the service life of the rubber ring.

[0014] Compared with the prior art, the improved adjustable pressure tank has the following advantages:

[0015] 1. A support ring is formed at the top of the connecting cylinder, and an annular groove for placing the rubber ring is formed between the support ring and the air inlet cylinder. This can effectively increase the thickness of the rubber ring in actual design, extend the service life of the rubber ring, and make the rubber ring fit more tightly with the air inlet cylinder and the support ring respectively, increasing the sealing performance between the rubber ring, the support ring and the air inlet cylinder, thereby greatly enhancing the working stability of this pressure tank.

[0016] 2. With the cooperation of the retaining ring and the limiting groove, the rubber ring is effectively prevented from coming out of the annular groove, which has the advantages of simple structure and convenient installation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this improved adjustable pressure tank.

[0018] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0019] In the diagram, 1. Base 1; 2. Air inlet; 3. Tank; 4. Airbag; 5. Air nozzle; 6. Connecting cylinder; 6a. Support ring; 6b. Retaining ring; 7. Annular groove; 8. Rubber ring; 9. Block 1; 10. Block 2; 11. Screw; 12. Pressure cap. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] Example 1

[0022] like Figure 1 As shown, this improved adjustable pressure tank includes a base 1, an air inlet 2, a tank body 3 mounted on the base 1, and an air bladder 4 disposed within the tank body 3. The base 1 is cylindrical, and the base 1 and tank body 3 are coaxially arranged, with the upper end of the base 1 welded and fixedly connected to the tank body 3. The air inlet 2 has its opening facing downwards, and an air nozzle 5 is installed at the top of the air inlet 2.

[0023] Specifically

[0024] The upper end of the tank body 3 is fitted with a connecting cylinder 6. The inner wall of the lower end of the connecting cylinder 6 is in contact with the outer wall of the tank body 3, and the connecting cylinder 6 and the tank body 3 are welded and sealed together. The top of the tank body 3 is provided with an air passage hole connecting the inner cavity of the tank body 3 and the inner cavity of the connecting cylinder 6. Preferably, there are multiple air passage holes. The lower end of the air inlet 2 is inserted into the upper end of the connecting cylinder 6. At this time, the outer wall of the lower end of the air inlet 2 matches and is in contact with the inner wall of the connecting cylinder 6. The air inlet 2 can slide up and down, and the air inlet 2 is locked in the sliding position by a locking structure.

[0025] like Figure 1 andFigure 2 As shown, a support ring 6a is formed on the top of the connecting cylinder 6, and the support ring 6a and the connecting cylinder 6 are an integral structure. The axial cross-section of the support ring 6a is L-shaped, and an annular groove 7 with its opening facing upward is formed between the support ring 6a and the air inlet 2, and the annular groove 7 and the connecting cylinder 6 are coaxially arranged. A rubber ring 8 is provided in the annular groove 7, and the rubber ring 8 abuts against the bottom surface of the annular groove 7, and the inner and outer sides of the rubber ring 8 contact and seal with the outer side of the air inlet 2 and the inner side of the support ring 6a, respectively.

[0026] A support ring 6a is formed at the top of the connecting cylinder 6, and an annular groove 7 for placing the rubber ring 8 is formed between the support ring 6a and the air inlet cylinder 2. This can effectively increase the thickness of the rubber ring 8 in actual design, extend the service life of the rubber ring 8, and make the rubber ring 8 fit more tightly with the air inlet cylinder 2 and the support ring 6a respectively, thereby increasing the sealing performance between the rubber ring 8, the support ring 6a and the air inlet cylinder 2, and thus greatly enhancing the working stability of this pressure tank.

[0027] To further explain, the support ring 6a is provided with a limiting structure to restrict the upward movement of the rubber ring 8, so as to stably confine the rubber ring 8 in the annular groove 7, prevent it from falling out when it slides up the air inlet 2, and further enhance the working stability of the pressure tank.

[0028] In this embodiment,

[0029] like Figure 2 As shown, the limiting structure includes a retaining ring 6b formed on the inner wall of the support ring 6a, and the retaining ring 6b is coaxially arranged with the support ring 6a. A ring-shaped limiting groove matching the retaining ring 6b is formed on the outer wall of the rubber ring 8, and the retaining ring 6b is engaged in the limiting groove. With the cooperation of the retaining ring 6b and the limiting groove, the rubber ring 8 is effectively prevented from coming out of the annular groove 7, which has the advantages of simple structure and convenient installation. Preferably, the axial cross-section of the retaining ring 6b is arc-shaped, and the outer wall of the support ring 6a is recessed inward to form the retaining ring 6b on the inner wall of the support ring 6a.

[0030] The locking structure is as follows: it includes two blocks 9 horizontally fixed on the outer wall of the air intake 2 and arranged symmetrically along the center of the air intake 2; two blocks 10 are fixed on the base 1 and are respectively positioned opposite the two blocks 9; a screw 11 is vertically provided between the opposing blocks 9 and blocks 10, the upper end of the screw 11 is fixed to the blocks 9, the lower end of the screw 11 passes through the blocks 10, and two pressure caps 12 are screwed to the lower end of the screw 11, and the two pressure caps 12 connected to the same screw 11 are respectively pressed tightly against the top and bottom walls of the blocks 10.

[0031] In actual products, the rubber ring 8 is completely within the annular groove 7 to protect the rubber ring 8 and extend its lifespan.

[0032] Example 2

[0033] The structure and principle of this embodiment are basically the same as those of embodiment one. The difference is that the limiting structure includes a pressure ring that is fixed to the top surface of the support ring 6a. The pressure ring is sleeved outside the air inlet 2 and presses against the top surface of the rubber ring 8.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An improved adjustable pressure tank, comprising a base (1), an air inlet (2), a tank body (3) disposed on the base (1), and an air bladder (4) disposed within the tank body (3), wherein a connecting cylinder (6) is sealed and fixedly connected to the upper end of the tank body (3), and an air passage hole communicating between the tank body (3) and the connecting cylinder (6) is provided at the top of the tank body (3), the lower end of the air inlet (2) is inserted into the upper end of the connecting cylinder (6) and can slide up and down, and the air inlet (2) is locked in the sliding position by a locking structure, characterized in that, The top of the connecting cylinder (6) is formed with a support ring (6a). The axial section of the support ring (6a) is L-shaped. An annular groove (7) with the opening facing upward is formed between the support ring (6a) and the air inlet (2). The annular groove (7) and the connecting cylinder (6) are coaxially arranged. A rubber ring (8) is provided in the annular groove (7). The rubber ring (8) presses against the bottom surface of the annular groove (7). The inner and outer sides of the rubber ring (8) are in contact with the outer side of the air inlet (2) and the inner side of the support ring (6a) respectively to seal.

2. The improved adjustable pressure tank according to claim 1, characterized in that, The support ring (6a) is provided with a limiting structure to restrict the upward movement of the rubber ring (8).

3. The improved adjustable pressure tank according to claim 2, characterized in that, The limiting structure includes a retaining ring (6b) formed on the inner side wall of the support ring (6a), and the retaining ring (6b) is coaxially arranged with the support ring (6a). The outer wall of the rubber ring (8) is provided with a limiting groove that is annular and matches the retaining ring (6b), and the retaining ring (6b) is stuck in the limiting groove.

4. The improved adjustable pressure tank according to claim 3, characterized in that, The axial section of the retaining ring (6b) is circular arc-shaped.

5. The improved adjustable pressure tank according to claim 3 or 4, characterized in that, The outer sidewall of the support ring (6a) is recessed inward to form the retaining ring (6b) on the inner sidewall of the support ring (6a).

6. The improved adjustable pressure tank according to claim 2, characterized in that, The limiting structure includes a pressure ring that is fixed to the top surface of the support ring (6a), the pressure ring is sleeved outside the air inlet (2), and the pressure ring presses against the top surface of the rubber ring (8).

7. The improved adjustable pressure tank according to claim 1, characterized in that, The rubber ring (8) is completely inside the annular groove (7).

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