Pneumatic brake valve with pressure detection mechanism

Abstract

The utility model discloses a pneumatic brake valve with a pressure detection mechanism, which is characterized in that the side surface of a pipe body is fixedly connected with a lower cylinder, the lower cylinder is detachably connected with an upper cylinder, a piston rod is arranged in the lower cylinder, the piston rod penetrates through the lower cylinder and extends into the upper cylinder, and the side surface of the piston rod is fixedly connected with a piston plate II and a piston plate I; the second piston plates and the first piston plates are located in the lower cylinder and the upper cylinder correspondingly, rubber sealing blocks are arranged on the first piston plates and the second piston plates and slidably connected with the inner wall of the lower cylinder and the inner wall of the upper cylinder, the two second piston plates are arranged, an inner column and an outer column are arranged between the two second piston plates, and the inner column is in threaded connection with the outer column. Through the above structure, the possibility of leakage caused by a gap between the pressure sensor and a pipeline due to aging of the pressure sensor is avoided, meanwhile, the conditions of short service life and easy leakage when a corrugated pipe is used are also avoided, and the overall service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic brake valve technology, and in particular to a pneumatic brake valve with a pressure detection mechanism. Background Technology

[0002] With the continuous advancement of industrial automation, pneumatic brake valves, due to their advantages of rapid response and precise control, have become a core component of mechanical equipment braking systems, widely used in transportation, construction machinery, and various production line equipment. However, existing pneumatic brake valve pressure detection mechanisms have revealed significant drawbacks in practical applications. For example, pressure sensor-based detection methods are prone to aging due to the sensors' long-term exposure to high pressure and high frequency. Aging leads to decreased sealing at the pipe interface, causing gas leakage, which not only reduces the control accuracy of the braking system but also poses safety hazards under high-pressure conditions. While some pneumatic brake valves use bellows structures for pressure transmission can sense pressure changes to some extent, the limitations of the bellows material result in poor fatigue resistance. Frequent expansion and contraction can easily lead to pipe wall rupture or loosening of the interface, causing gas leakage. Furthermore, their short service life increases equipment maintenance costs and downtime. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a pneumatic brake valve with a pressure detection mechanism. By setting up a pipe body, a lower cylinder, an upper cylinder, a piston rod, piston plate two and piston plate one, a rubber sealing block, an inner column, an outer column, a connecting pipe, and a cooling component, it avoids the possibility of leakage caused by gaps between the pressure sensor and the pipeline due to aging. At the same time, it also avoids the short service life and easy leakage of the bellows, thus extending the overall service life.

[0004] This utility model also provides a pneumatic brake valve with a pressure detection mechanism as described above, comprising: a pipe body, a lower cylinder fixedly connected to the side surface of the pipe body, an upper cylinder detachably connected to the lower cylinder, a piston rod disposed inside the lower cylinder, the piston rod penetrating the lower cylinder and extending into the upper cylinder, a piston plate two and a piston plate one fixedly connected to the side surface of the piston rod, the piston plate two and piston plate one respectively located inside the lower cylinder and the upper cylinder, a rubber sealing block disposed on both piston plate one and piston plate two, the rubber sealing block being slidably connected to the inner wall of the lower cylinder and the upper cylinder, and two piston plates two being provided, an inner column and an outer column disposed between the two piston plates two, the inner column and the outer column being threadedly connected and fixedly connected to the piston plate two, a connecting pipe disposed on the side surface of both the lower cylinder and the upper cylinder, and a cooling component disposed on the upper surface of the piston plate two fixedly connected to the inner column. Through the above structure, the possibility of leakage due to gaps between the pressure sensor and the pipe caused by aging is avoided, and the short service life and easy leakage of corrugated pipes are also avoided, thus extending the overall service life.

[0005] According to the present invention, a pneumatic brake valve with a pressure detection mechanism is provided. The cooling component includes a limiting post, a fixing ring is fixedly connected to the side surface of the limiting post, and a plurality of nozzles are provided on the lower surface of the fixing ring. Through the above structure, it is convenient to spray out the air conveyed in the upper cylinder to cool the rubber sealing block in the lower cylinder.

[0006] According to the present invention, a pneumatic brake valve with a pressure detection mechanism is provided in the lower cylinder, the vent groove is connected to the connecting pipe, and the vent groove is connected to the fixing ring through the air pipe. The above structure facilitates the delivery of air.

[0007] According to the present invention, a pneumatic brake valve with a pressure detection mechanism is provided, wherein a second spring seat is fixedly connected to the top of the piston rod, the second spring seat is located above the upper cylinder, a spring is fixedly connected to the upper surface of the second spring seat, and a first spring seat is fixedly connected to the end of the spring away from the second spring seat. A pressure sensor is provided on the upper surface of the first spring seat. The above structure facilitates the fixing of the spring and facilitates the detection of the pressure in the pipeline by means of the force exerted by the spring on the first spring seat.

[0008] According to the present invention, a pneumatic brake valve with a pressure detection mechanism is provided with a sleeve on the side surface of the upper cylinder, and the pressure sensor is fixedly connected to the sleeve. The above structure facilitates the fixing of the pressure sensor.

[0009] According to the present invention, a pneumatic brake valve with a pressure detection mechanism is provided, wherein a connecting ring is fixedly connected to the side surface of the upper cylinder, and the connecting ring is threadedly connected to the lower cylinder. The above structure facilitates the connection and fixation between the upper cylinder and the lower cylinder.

[0010] Beneficial effects:

[0011] Compared with existing technologies, this pneumatic brake valve with a pressure detection mechanism, by setting up a pipe body, lower cylinder, upper cylinder, piston rod, piston plate two and piston plate one, rubber sealing block, inner column, outer column, connecting pipe and cooling component, avoids the possibility of leakage caused by gaps between the pressure sensor and the pipeline due to aging. It also avoids the short service life and easy leakage of bellows, thus extending the overall service life. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0013] Figure 1 This is an overall structural diagram of a pneumatic brake valve with a pressure detection mechanism according to the present invention.

[0014] Figure 2 This is a transverse cross-sectional view of a pneumatic brake valve with a pressure detection mechanism according to the present invention.

[0015] Figure 3 This is a longitudinal sectional view of a pneumatic brake valve with a pressure detection mechanism according to the present invention.

[0016] Figure 4 This utility model relates to a pneumatic brake valve with a pressure detection mechanism. Figure 2 Enlarged structural diagram at point C.

[0017] Legend:

[0018] 1. Pipe body; 2. Lower cylinder; 3. Connecting pipe; 4. Upper cylinder; 5. Connecting ring; 6. Sleeve; 7. Pressure sensor; 8. Spring seat one; 9. Spring; 10. Spring seat two; 11. Piston rod; 12. Piston plate one; 13. Piston plate two; 14. Rubber sealing block; 15. Outer column; 16. Inner column; 17. Limiting column; 18. Fixing ring; 19. Vent groove. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] Reference Figure 1-4This utility model discloses a pneumatic brake valve with a pressure detection mechanism, comprising: a pipe body 1, a lower cylinder 2 fixedly connected to the side surface of the pipe body 1, an upper cylinder 4 detachably connected to the lower cylinder 2, a piston rod 11 disposed inside the lower cylinder 2, the piston rod 11 penetrating the lower cylinder 2 and extending into the upper cylinder 4, a piston plate 13 and a piston plate 12 fixedly connected to the side surface of the piston rod 11, the piston plate 13 and piston plate 12 being located inside the lower cylinder 2 and the upper cylinder 4 respectively, and a rubber sealing block 14 disposed on both the piston plate 12 and the piston plate 13, the rubber sealing block 14 being slidably connected to the inner walls of the lower cylinder 2 and the upper cylinder 4, and the piston... There are two piston plates 13. An inner column 16 and an outer column 15 are provided between the two piston plates 13. The inner column 16 and the outer column 15 are threaded together and fixedly connected to the piston plates 13. The lower cylinder 2 and the upper cylinder 4 are provided with connecting pipes 3 on their side surfaces. The upper surface of the piston plate 13 with the inner column 16 is provided with a cooling component. The cooling component includes a limiting column 17. A fixing ring 18 is fixedly connected to the side surface of the limiting column 17. Several nozzles are provided on the lower surface of the fixing ring 18. A ventilation groove 19 is provided in the lower cylinder 2. The ventilation groove 19 is connected to the connecting pipe 3. The ventilation groove 19 is connected to the fixing ring 18 through an air pipe.

[0021] Specifically, when the gas pressure inside pipe 1 changes, piston plate 13 slides inside lower cylinder 2, causing piston rod 11 to rise and fall, which in turn drives piston plate 2 to rise and fall, compressing the air inside upper cylinder 2. The air inside upper cylinder 4 is then transported to lower cylinder 2 through connecting pipe 3, and the air is sprayed out through nozzle to cool the rubber sealing block 14 inside lower cylinder 2. The ventilation groove 19 on lower cylinder 2 is first opened on lower cylinder 2, and then sealed by welding sealing rings. At the same time, the two piston plates 13 are connected by an outer column 15 and an inner column 16 through a threaded connection, which facilitates installation and disassembly.

[0022] A second spring seat 10 is fixedly connected to the top of the piston rod 11. The second spring seat 10 is located above the upper cylinder 4. A spring 9 is fixedly connected to the upper surface of the second spring seat 10. A first spring seat 8 is fixedly connected to the end of the spring 9 away from the second spring seat 10. A pressure sensor 7 is provided on the upper surface of the first spring seat 8. A sleeve 6 is provided on the side surface of the upper cylinder 4. The pressure sensor 7 is fixedly connected to the sleeve 6. A connecting ring 5 is fixedly connected to the side surface of the upper cylinder 4. The connecting ring 5 is threadedly connected to the lower cylinder 2.

[0023] Specifically, when the piston rod 11 moves up and down, it drives the spring seat 10 to move up and down, which in turn causes the spring 9 to extend and retract, thereby causing the pressure of the spring 9 on the spring seat 8 to change. The pressure sensor 7 then detects the pressure change of the gas in the pipeline, and the connecting ring 5 connects and fixes the upper cylinder 4 and the lower cylinder 2.

[0024] Working principle: During use, the pressure change of the gas inside the tube causes the piston plate 13 to rise and fall, which in turn drives the piston rod to rise and fall, and at the same time drives the piston plate 12 to rise and fall. Under the action of the piston rod 11, the spring seat 8 rises and falls, thereby changing the pressure of the spring seat 9 through the pressure change of the spring seat 8, and causing the pressure on the spring seat 10 to change. The pressure change is detected by the pressure sensor 7. At the same time, when the piston plate 12 rises, the air in the upper cylinder 4 is compressed by the piston plate 12 and transported through the connecting pipe 3 to cool the piston plate 13 in the lower cylinder 2. The rubber sealing block 14 facilitates sealing. At the same time, when the air in the lower cylinder 2 is compressed, the limit post 17 on the piston plate 13 allows the air to be stored in this area.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pneumatic brake valve with a pressure detection mechanism, characterized in that, include: A tube body (1) is provided, and a lower cylinder (2) is fixedly connected to the side surface of the tube body (1). An upper cylinder (4) is detachably connected to the lower cylinder (2). A piston rod (11) is provided inside the lower cylinder (2). The piston rod (11) passes through the lower cylinder (2) and extends into the upper cylinder (4). A piston plate two (13) and a piston plate one (12) are fixedly connected to the side surface of the piston rod (11). The piston plate two (13) and the piston plate one (12) are located in the lower cylinder (2) and the upper cylinder (4) respectively. Both the piston plate one (12) and the piston plate two (13) are provided with A rubber sealing block (14) is provided, which is slidably connected to the inner wall of the lower cylinder (2) and the upper cylinder (4). There are two piston plates (13), with an inner column (16) and an outer column (15) between the two piston plates (13). The inner column (16) and the outer column (15) are threadedly connected and fixedly connected to the piston plates (13). A connecting pipe (3) is provided on the side surface of both the lower cylinder (2) and the upper cylinder (4). A cooling component is provided on the upper surface of the piston plate (13) with the inner column (16) fixedly connected.

2. A pneumatic brake valve with a pressure detection mechanism according to claim 1, characterized in that, The cooling component includes a limiting post (17), a fixing ring (18) is fixedly connected to the side surface of the limiting post (17), and a plurality of nozzles are provided on the lower surface of the fixing ring (18).

3. A pneumatic brake valve with a pressure detection mechanism according to claim 1, characterized in that, The lower cylinder (2) is provided with a ventilation groove (19), which is connected to the connecting pipe (3) and is connected to the fixing ring (18) through the air pipe.

4. A pneumatic brake valve with a pressure detection mechanism according to claim 1, characterized in that, A second spring seat (10) is fixedly connected to the top of the piston rod (11). The second spring seat (10) is located above the upper cylinder (4). A spring (9) is fixedly connected to the upper surface of the second spring seat (10). A first spring seat (8) is fixedly connected to the end of the spring (9) away from the second spring seat (10). A pressure sensor (7) is provided on the upper surface of the first spring seat (8).

5. A pneumatic brake valve with a pressure detection mechanism according to claim 4, characterized in that, A sleeve (6) is provided on the side surface of the upper cylinder (4), and the pressure sensor (7) is fixedly connected to the sleeve (6).

6. A pneumatic brake valve with a pressure detection mechanism according to claim 1, characterized in that, A connecting ring (5) is fixedly connected to the side surface of the upper cylinder (4), and the connecting ring (5) is threadedly connected to the lower cylinder (2).

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