Pressure-adjustable bag type pressure tank

Abstract

The utility model discloses a bag type pressure tank with adjustable pressure, which comprises a tank body and a box body, a connecting pipe is arranged between the tank body and the box body, a pressurizing cavity, a long cavity and a pressure relief cavity are sequentially arranged in the box body, an adjusting mechanism is arranged in the long cavity, and the pressure relief cavity is arranged in the long cavity. The adjusting mechanism comprises an L-shaped moving block slidably mounted in the long cavity, two second springs are fixedly mounted between one side of the L-shaped moving block and the long cavity, a pressurizing hole and a pressure relief hole are formed in the connecting position of the pressurizing cavity and the long cavity and the connecting position of the pressure relief cavity and the long cavity respectively, and an opening and closing plate is arranged on the pressurizing hole. The lower end of the opening and closing plate and the upper end of the L-shaped moving block are each provided with a plurality of clamping teeth arranged at equal intervals, and a circular gear matched with the clamping teeth is arranged between the opening and closing plate and the L-shaped moving block. According to the utility model, the pressure in the tank body can be automatically adjusted through the adjusting mechanism in the tank body, so as to further adapt to different working conditions.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of bladder-type pressure tanks, in particular to a bladder-type pressure tank with adjustable pressure. Background Art

[0002] In various fluid systems, such as water supply, HVAC and other fields, in order to solve the problem of pressure fluctuations affecting system operation efficiency and equipment life, bladder pressure tanks came into being. It separates the fluid from the pre-filled gas through an internal bladder and uses the compressibility of the gas to adapt to system pressure changes. With the development of technology, the requirements for its performance such as pressure regulation accuracy, sealing, and service life are constantly improving to meet the needs of complex systems and energy-saving and environmental protection goals.

[0003] The pre-charge pressure in the existing bladder pressure tank is basically set at the factory. In actual application, it is difficult to flexibly and quickly change the pressure setting value according to the system pressure change requirements. In some water supply systems, the pressure requirements during peak and off-peak periods are different. The existing bladder pressure tank cannot adjust the pressure in time to adapt to different working conditions, which may lead to insufficient water supply pressure during peak periods or excessive pressure during off-peak periods, affecting the normal operation of the system and the service life of the equipment. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the pressure in the existing bladder type pressure tank is fixed and cannot be adapted to different working conditions, and to propose a bladder type pressure tank with adjustable pressure.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The cam is connected with the water inlet pipe and the outlet pipe, and the water inlet pipe and the outlet pipe are connected with the cam.

[0007] As a further description of the above technical solution, an elongated hole is provided on the boost cavity between the opening and closing plate and the L-shaped moving block, the circular gear is rotatably installed in the elongated hole, the circular gear is engaged with a number of teeth on the opening and closing plate, a limiting groove is provided on one side of the boost cavity at the upper end of the boost hole, the side of the opening and closing plate away from the circular gear is fixedly connected to the limiting block, and the limiting block is slidably engaged in the limiting groove.

[0008] As a further description of the above technical solution, an L-shaped partition is fixedly installed on the boost cavity, the upper end of the opening and closing plate is close to the surface of the L-shaped partition and is slidingly connected to the L-shaped partition, both ends of the inner wall of the L-shaped partition are fixedly connected to the limiting rods, and the two limiting rods pass through the opening and closing plate at one end close to the opening and closing plate and are slidingly connected to the opening and closing plate. Two first springs are fixedly installed between the opening and closing plate and the L-shaped partition, and the two first springs are respectively slidably sleeved on the outer surfaces of the two limiting rods.

[0009] As a further description of the above technical solution, the lower ends of the tank body and the box body are provided with support legs, a pressure gauge is fixedly installed on the side wall of the tank body, and two ventilation pipes are fixedly connected to the side of the box body away from the connecting pipe. The two ventilation pipes are respectively located at the lower ends of the boost cavity and the pressure relief cavity, and a regulating valve is provided on the ventilation pipe on the boost cavity side.

[0010] As a further description of the above technical solution, a pressure plate is provided in the boost cavity, the four sides of the pressure plate are close to the inner wall of the boost cavity and are slidingly connected to the boost cavity, a telescopic rod is fixedly installed on the boost cavity, the telescopic end of the telescopic rod passes through the box and is fixedly connected to the pressure plate, a third spring is fixedly installed between the upper end of the pressure plate and the inner wall of the boost cavity, and the third spring is slidingly sleeved on the outer surface of the telescopic end of the telescopic rod.

[0011] As a further description of the above technical solution, the lower end of the airbag is fixedly connected to a rubber base, the lower end of the tank body is provided with an annular groove, and the rubber base is snap-fitted with the annular groove.

[0012] As a further description of the above technical solution, the end of the airbag away from the rubber base is fixedly connected to a snap ring, the upper inner wall of the tank body is fixedly connected to a positioning block, the upper end of the tank body is provided with a fixing bolt, the fixing bolt passes through the tank body and is threadedly connected to the tank body, the lower end of the fixing bolt is located in the positioning block, the lower end of the fixing bolt is fixedly connected to a hook, and the hook is snap-fitted with the snap ring.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In the utility model, due to the use of an adjustment mechanism in the box, when the pressure in the tank is too high, the excess pressure in the tank pushes the gas into the elongated cavity, and then the L-shaped movable plate moves in the opposite direction of the connecting pipe in the elongated cavity. When the L-shaped movable plate is squeezed and moved to the side of the pressure relief hole away from the connecting pipe, the excess pressure enters the pressure relief cavity through the plurality of pressure relief holes. When the pressure in the tank is balanced, under the elastic force of the second spring, the L-shaped movable plate moves toward the direction of the connecting pipe to block the plurality of pressure relief holes. When the pressure in the tank is too low, the elongated cavity in the L The air on the left side of the L-shaped movable plate is absorbed into the tank body. When the L-shaped movable plate moves to the circular gear, the latch teeth on the upper end of the L-shaped movable plate drive the circular gear to rotate, further moving the opening and closing plate away from the inner wall of the supercharging cavity, so that the supercharging hole is opened, and the gas in the supercharging cavity enters the connecting pipe through the supercharging hole. When the pressure in the tank body is balanced, the L-shaped movable plate moves in the opposite direction. Under the transmission of the circular gear, the opening and closing plate slides in the opposite direction, closing the supercharging hole, thereby regulating the pressure in the tank body, so that the tank body can adjust the pressure according to real-time demand, and ensure that the system can operate stably under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure inside the tank of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure inside the box of the utility model;

[0018] Figure 4 for Figure 3 A magnified view of the structure in the middle.

[0019] Reference numerals: 10, tank body; 101, water inlet pipe; 102, water outlet pipe; 103, pressure gauge; 104, positioning block; 105, annular groove; 11, air bag; 111, rubber base; 112, snap ring; 12, fixing bolt; 121, hook; 13, connecting pipe;

[0020] 20. Box body; 201. Pressure relief cavity; 202. Pressurization cavity; 203. Elongated cavity; 204. Ventilation pipe; 205. Elongated hole; 206. Limiting groove; 207. L-shaped partition; 208. Pressure relief hole; 209. Pressurization hole; 21. Regulating valve; 22. L-shaped moving block; 23. Circular gear; 24. Opening and closing plate; 241. First spring; 242. Limiting block; 243. Limiting rod; 25. Second spring; 26. Pressing plate; 27. Telescopic rod; 28. Third spring. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0022] Please refer to the attached Figures 1-4 As shown, the utility model provides a technical solution: a pressure-adjustable bladder pressure tank, comprising a tank body 10 and a box body 20, an air bag 11 is provided in the tank body 10, a water inlet pipe 101 and a water outlet pipe 102 are fixedly connected to the lower end of the tank body 10, the water inlet pipe 101 and the water outlet pipe 102 are connected to the tank body 10 by threads, a connecting pipe 13 is fixedly connected between the tank body 10 and the box body 20, a pressurizing cavity 202, an elongated cavity 203 and a pressure relief cavity 201 are sequentially opened from top to bottom in the box body 20, the connecting pipe 13 is connected to the elongated cavity 203, an adjusting mechanism is provided in the elongated cavity 203, and the adjusting mechanism includes an L-shaped moving block 22 slidably mounted in the elongated cavity 203, and the four sides of the L-shaped moving block 22 are close to the elongated cavity 2 03 is provided on the inner wall, and a sealing gasket is provided at the connection. Two second springs 25 are fixedly installed between one side of the L-shaped moving block 22 and the elongated cavity 203. The boosting cavity 202, the pressure relief cavity 201 and the elongated cavity 203 are connected with a boosting hole 209 and a pressure relief hole 208 on both sides of the L-shaped moving block 22 respectively. An opening and closing plate 24 is slidably installed on the boosting hole 209. The lower end of the opening and closing plate 24 and the upper end of the L-shaped moving block 22 are provided with a number of equally spaced teeth. A circular gear 23 matched with the number of teeth is provided between the opening and closing plate 24 and the L-shaped moving block 22. Through the adjustment mechanism, the pressure of the tank body 10 can be adjusted, so that the tank body 10 can flexibly and quickly change the pressure setting value according to the system pressure change requirements in actual application.

[0023] In one embodiment of the present invention, Figure 3 and Figure 4 As shown, an elongated hole 205 is provided on the boost cavity 202 between the opening and closing plate 24 and the L-shaped moving block 22, and the circular gear 23 is rotatably installed in the elongated hole 205. The circular gear 23 is engaged with a number of teeth on the opening and closing plate 24. A limiting groove 206 is provided at the upper end of the boost hole 209 on one side of the boost cavity 202. The side of the opening and closing plate 24 away from the circular gear 23 is fixedly connected to the limiting block 242, and the limiting block 242 is slidably engaged in the limiting groove 206. A sealing gasket is provided on the side of the opening and closing plate 24 close to the inner wall of the boost cavity 202 and the side of the limiting block 242 close to the limiting groove 206.

[0024] In one embodiment of the present invention, Figure 3 and Figure 4As shown, an L-shaped partition 207 is fixedly installed on the boost cavity 202, and the upper end of the opening and closing plate 24 is tightly attached to the surface of the L-shaped partition 207 and is slidingly connected to the L-shaped partition 207. Both ends of the inner wall of the L-shaped partition 207 are fixedly connected to the limiting rod 243, and the two limiting rods 243 pass through the opening and closing plate 24 at one end close to the opening and closing plate 24 and are slidingly connected to the opening and closing plate 24. Two first springs 241 are fixedly installed between the opening and closing plate 24 and the L-shaped partition 207, and the two first springs 241 are respectively slidably sleeved on the outer surfaces of the two limiting rods 243. When the boost hole 209 is opened, the opening and closing plate 24 slides on the two limiting rods 243 and squeezes the two first springs 241 respectively. When the opening and closing plate 24 is reset, the opening and closing plate 24 will be tightly attached to the inner wall of the boost cavity 202, thereby increasing the sealing of the opening and closing plate 24.

[0025] In one embodiment of the present invention, Figure 1 、 Figure 3 and Figure 4 As shown, the lower ends of the tank body 10 and the box body 20 are both provided with supporting legs, and a pressure gauge 103 is fixedly installed on the side wall of the tank body 10, so that the operator can visually observe the pressure inside the tank body 10. Two ventilation pipes 204 are fixedly connected to the side of the box body 20 away from the connecting pipe 13. The two ventilation pipes 204 are respectively located at the lower ends of the pressurization cavity 202 and the pressure relief cavity 201. A regulating valve 21 is provided on the ventilation pipe 204 on the side of the pressurization cavity 202. The reduction of gas in the pressurization cavity 202 will cause the pressure plate 26 to pull the telescopic end of the telescopic rod 27 to move continuously downward, pulling the third spring 28 into a stretched state. When the opening and closing plate 24 is closed, opening the regulating valve 21 can reset the pressure plate 26.

[0026] In one embodiment of the present invention, Figure 3 and Figure 4 As shown, a pressure plate 26 is provided in the boost cavity 202, and the four sides of the pressure plate 26 are in close contact with the inner wall of the boost cavity 202 and are slidingly connected to the boost cavity 202. A telescopic rod 27 is fixedly installed on the boost cavity 202, and a sealing gasket is provided at the connection between the telescopic rod 27 and the box body 20. The telescopic end of the telescopic rod 27 passes through the box body 20 and is fixedly connected to the pressure plate 26. A third spring 28 is fixedly installed between the upper end of the pressure plate 26 and the inner wall of the boost cavity 202, and the third spring 28 is slidably sleeved on the outer surface of the telescopic end of the telescopic rod 27.

[0027] Specifically, when the bladder pressure tank is in use, when the pre-charge pressure in the tank body 10 is higher than the set value, the excess pressure in the tank body 10 pushes the gas through the connecting pipe 13 into the elongated cavity 203, and then the L-shaped moving block 22 moves in the elongated cavity 203 toward the connecting pipe 13 in the opposite direction. When the L-shaped moving block 22 is squeezed and moved to the side of the pressure relief hole 208 away from the connecting pipe 13, the excess pressure enters the pressure relief cavity 201 through the plurality of pressure relief holes 208. When the pressure in the tank body 10 drops to within the set value range, under the elastic force of the second spring 25, the L-shaped moving block 22 moves toward the connecting pipe 13 to block the plurality of pressure relief holes 208. When the pre-charge pressure in the tank body 10 is lower than the set value, the air in the elongated cavity 203 on the left side of the L-shaped moving block 22 passes through the connecting pipe 13 to It is absorbed into the tank body 10. When the L-shaped moving block 22 moves to the circular gear 23, the teeth at the upper end of the L-shaped moving block 22 drive the circular gear 23 to rotate, further moving the opening and closing plate 24 away from the inner wall of the boost cavity 202, so that the boost hole 209 is opened, and the gas in the boost cavity 202 enters the connecting pipe 13 through the boost hole 209. The reduction of the gas in the boost cavity 202 will pull the pressure plate 26 to continue to move downward, pulling the third spring 28 into a stretched state. When the pressure in the tank body 10 rises to within the set value range, the L-shaped moving block 22 moves in the opposite direction. Under the transmission of the circular gear 23, the opening and closing plate 24 slides in the opposite direction, closing the boost hole 209, thereby adjusting the pressure in the tank body 10, so that the tank body 10 can adjust the pressure according to real-time needs, and ensure that the system can operate stably under various working conditions.

[0028] In one embodiment of the present invention, Figure 2 As shown, the lower end of the airbag 11 is fixedly connected to a rubber base 111, and an annular groove 105 is opened at the lower end of the tank body 10. The rubber base 111 is snap-fitted with the annular groove 105. The rubber base 111 is made of flexible material, which makes it easy to remove the rubber base 111 from the annular groove 105.

[0029] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, one end of the airbag 11 away from the rubber base 111 is fixedly connected with a snap ring 112, and the inner wall of the upper end of the tank body 10 is fixedly connected with a positioning block 104. The upper end of the tank body 10 is provided with a fixing bolt 12, which passes through the tank body 10 and is threadedly connected to the tank body 10. A sealing gasket is provided at the connection between the fixing bolt 12 and the tank body 10. The lower end of the fixing bolt 12 is located in the positioning block 104, and the lower end of the fixing bolt 12 is fixedly connected with a hook 121. The hook 121 is snap-fitted with the snap ring 112, and the snap ring 112 is sleeved on the hook 121 to facilitate fixing the upper end of the airbag 11.

[0030] The above description of the present invention is illustrative in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A pressure-adjustable bladder-type pressure tank, comprising a tank body (10) and a box body (20), wherein an air bag (11) is provided in the tank body (10), a water inlet pipe (101) and a water outlet pipe (102) are fixedly connected to the lower end of the tank body (10), and a connecting pipe (13) is fixedly connected between the tank body (10) and the box body (20), characterized in that: The box body (20) is provided with a pressurizing cavity (202), an elongated cavity (203) and a pressure relief cavity (201) in sequence from top to bottom. The connecting pipe (13) is connected to the elongated cavity (203). An adjusting mechanism is provided in the elongated cavity (203). The adjusting mechanism includes an L-shaped moving block (22) slidably installed in the elongated cavity (203). Two second springs (25) are fixedly installed between one side of the L-shaped moving block (22) and the elongated cavity (203). A pressurizing hole (209) and a pressure relief hole (208) are respectively provided on both sides of the L-shaped moving block (22) at the connection between the cavity (202), the pressure relief cavity (201) and the elongated cavity (203); an opening and closing plate (24) is slidably mounted on the pressurizing hole (209); a plurality of latching teeth arranged at equal intervals are provided at the lower end of the opening and closing plate (24) and the upper end of the L-shaped moving block (22); and a circular gear (23) matched with the plurality of latching teeth is provided between the opening and closing plate (24) and the L-shaped moving block (22).

2. The pressure-adjustable bladder pressure tank according to claim 1, characterized in that: An elongated hole (205) is provided on the boost cavity (202) at a position between the opening and closing plate (24) and the L-shaped moving block (22); the circular gear (23) is rotatably mounted in the elongated hole (205); the circular gear (23) is meshed with a plurality of teeth on the opening and closing plate (24); a limiting groove (206) is provided on one side of the boost cavity (202) at the upper end of the boost hole (209); a limiting block (242) is fixedly connected to the side of the opening and closing plate (24) away from the circular gear (23); and the limiting block (242) is slidably engaged in the limiting groove (206).

3. The pressure-adjustable bladder pressure tank according to claim 1, characterized in that: An L-shaped partition (207) is fixedly installed on the pressurized cavity (202), the upper end of the opening and closing plate (24) is in close contact with the surface of the L-shaped partition (207) and is slidably connected to the L-shaped partition (207), both ends of the inner wall of the L-shaped partition (207) are fixedly connected to limit rods (243), one end of the two limit rods (243) close to the opening and closing plate (24) passes through the opening and closing plate (24) and is slidably connected to the opening and closing plate (24), and two first springs (241) are fixedly installed between the opening and closing plate (24) and the L-shaped partition (207), and the two first springs (241) are respectively slidably sleeved on the outer surfaces of the two limit rods (243).

4. The pressure-adjustable bladder pressure tank according to claim 1, characterized in that: The lower ends of the tank body (10) and the box body (20) are both provided with support legs. A pressure gauge (103) is fixedly mounted on the side wall of the tank body (10). Two ventilation pipes (204) are fixedly connected to the side of the box body (20) away from the connecting pipe (13). The two ventilation pipes (204) are respectively arranged at the lower ends of the pressurization cavity (202) and the pressure relief cavity (201). A regulating valve (21) is provided on the ventilation pipe (204) on the side of the pressurization cavity (202).

5. The pressure-adjustable bladder pressure tank according to claim 1, characterized in that: A pressure plate (26) is provided in the pressurizing cavity (202), and the four sides of the pressure plate (26) are in close contact with the inner wall of the pressurizing cavity (202) and are slidably connected to the pressurizing cavity (202). A telescopic rod (27) is fixedly installed on the pressurizing cavity (202), and the telescopic end of the telescopic rod (27) passes through the box body (20) and is fixedly connected to the pressure plate (26). A third spring (28) is fixedly installed between the upper end of the pressure plate (26) and the inner wall of the pressurizing cavity (202), and the third spring (28) is slidably sleeved on the outer surface of the telescopic end of the telescopic rod (27).

6. The pressure-adjustable bladder pressure tank according to claim 1, characterized in that: The lower end of the air bag (11) is fixedly connected to a rubber base (111), the lower end of the tank body (10) is provided with an annular groove (105), and the rubber base (111) is snap-fitted with the annular groove (105).

7. The pressure-adjustable bladder pressure tank according to claim 6, characterized in that: One end of the airbag (11) away from the rubber base (111) is fixedly connected to a snap ring (112); the inner wall of the upper end of the tank body (10) is fixedly connected to a positioning block (104); the upper end of the tank body (10) is provided with a fixing bolt (12); the fixing bolt (12) passes through the tank body (10) and is threadedly connected to the tank body (10); the lower end of the fixing bolt (12) is located in the positioning block (104); the lower end of the fixing bolt (12) is fixedly connected to a hook (121); the hook (121) is snap-fitted with the snap ring (112).

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