Piston type flow and pressure regulating valve

Abstract

The piston type flow and pressure regulating valve is simple in structure and capable of preventing the valve from being opened and closed at will and comprises a valve body, a piston flow regulating device, a valve shaft and a rotating handle, the piston flow regulating device is arranged in the valve body and used for regulating flow, the valve shaft is rotatably arranged on the valve body in a penetrating mode, one end of the valve shaft is connected with the piston flow regulating device, and the other end of the valve shaft penetrates out of the valve body. A driving box is arranged on the valve body, the valve shaft is located in the driving box, the valve shaft is sleeved with a worm gear, a worm is rotationally arranged on the driving box in a penetrating mode, one end of the worm is in meshing transmission with the worm gear, the other end of the worm penetrates out of the driving box, the rotating handle is rotationally arranged at the end of the worm in a sleeving mode, and the rotating handle is located outside the driving box. A first channel is formed in the rotating handle, a second channel communicated with the first channel is formed in the end of the worm, a sliding block is arranged in the second channel in a sliding mode, and a sliding device used for driving the sliding block to slide into the second channel is arranged between the rotating handle and the worm.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a piston-type flow regulating and pressure regulating valve. Background Technology

[0002] Piston-type flow regulating valves are widely used in power plants, drinking water, and water supply. They regulate flow by adjusting the opening of the piston and by using a throttling sleeve installed at the front of the piston. Water or gas exiting through a hole in the throttling sleeve collides with each other, causing velocity energy to dissipate. Based on this principle, the valve can simultaneously regulate flow and pressure. However, most flow regulating valves on the market currently lack secure opening / closing mechanisms. If unauthorized individuals open or close them arbitrarily, adjusting the flow rate could cause significant economic losses or even damage to production.

[0003] To address this problem, this utility model was developed. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model proposes a piston-type flow regulating and pressure regulating valve with a simple structure that can prevent the valve from being opened and closed arbitrarily.

[0005] To solve the above-mentioned technical problems, the solution adopted by this utility model is as follows: A piston-type flow regulating and pressure regulating valve includes a valve body, a piston flow regulating device disposed in the valve body for regulating flow, a valve shaft rotatably passing through the valve body, and a rotating handle. One end of the valve shaft is connected to the piston flow regulating device, and the other end of the valve shaft passes through the valve body. A drive box is provided on the valve body, and the valve shaft is located inside the drive box. A worm gear is sleeved on the valve shaft, and a worm is rotatably passed through the drive box. One end of the worm meshes with the worm gear for transmission, and the other end of the worm passes through the drive box. The rotating handle is rotatably sleeved on the end of the worm and is located outside the drive box. A first channel is opened inside the rotating handle, and a second channel communicating with the first channel is opened at the end of the worm. A sliding block is slidably disposed in the second channel, and a sliding device is provided between the rotating handle and the worm for driving the sliding block to slide into the second channel.

[0006] A further improvement is that the sliding device includes a first magnetic block with an S pole and a second magnetic block with N and S poles. The first magnetic block is located inside the sliding block. The rotating handle has a socket channel that communicates with the outside. The second magnetic block is located inside the socket channel. When the valve is to be opened, the N pole of the second magnetic block faces the first magnetic block. After the valve is opened or closed, the S pole faces the first magnetic block. The rotating handle is equipped with an encryption device to prevent others from taking the second magnetic block.

[0007] A further improvement is that the encryption device includes an encryption sleeve, the rotating handle has an encryption channel on the periphery of the second magnetic block, the encryption sleeve passes through the encryption channel, the end of the second magnetic block resists the inner end face of the encryption sleeve, and the rotating handle is provided with a limiting device to restrict the removal of the encryption sleeve.

[0008] A further improvement is that the limiting device includes a limiting block located on the bottom side of the encryption sleeve, the rotating handle has an annular channel that is connected to the encryption channel, and the rotating handle also has a through-channel for the limiting block to slide in and out.

[0009] A further improvement is that it also includes a spring, one end of which is connected to the sliding block, and the other end of which is connected to the bottom of the second channel.

[0010] A further improvement is that it also includes a slide rail, which is mounted on the worm gear, and the rotating handle has a groove, in which the slide rail is slidably mounted.

[0011] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0012] With a simple structure, it prevents unauthorized personnel from opening and closing the valve. During use, the handle and worm gear are separated and rotated. If someone unsure of the operating procedure connects the handle and worm gear and then tries to use the valve, they will be unable to open or close it, thus preventing malicious valve operation, economic losses, and production disruptions, and facilitating management by staff. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a piston-type flow and pressure regulating valve according to an embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram of the cut-out structure of the handle according to an embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the cut-out structure of the handle according to an embodiment of the present invention. Detailed Implementation

[0016] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0017] refer to Figure 1-3The present invention discloses the following embodiments: A piston-type flow regulating and pressure regulating valve includes a valve body 1, a piston flow regulating device (the piston flow regulating device is a known technology and not an improvement of this solution, so it will not be described in detail) disposed within the valve body 1, a valve shaft rotatably passing through the valve body 1, and a rotating handle 4. One end of the valve shaft is connected to the piston flow regulating device, and the other end of the valve shaft extends out of the valve body 1. A drive box 2 is provided on the valve body 1, and the valve shaft is located inside the drive box 2. A worm gear is sleeved on the valve shaft, and a worm 3 is rotatably passed through the drive box 2. One end of the worm 3 meshes with the worm gear for transmission, and the other end of the worm 3 extends out of the drive box 2. The rotating handle 4 is rotatably sleeved on the end of the worm 3 and is located outside the drive box 2. A first channel 9 is opened inside the rotating handle 4, and a second channel 6 communicating with the first channel 9 is opened at the end of the worm 3. A sliding block 8 is slidably disposed in the second channel 6, and a sliding device for driving the sliding block 8 into the second channel 6 is provided between the rotating handle 4 and the worm 3.

[0018] Specifically, the sliding device includes a first magnetic block 12 with an S pole, a second magnetic block 13 with N and S poles, and an encryption sleeve 14. The first magnetic block 12 is located inside the sliding block 8. The rotating handle 4 has a socket channel that communicates with the outside. The second magnetic block 13 is located inside the socket channel. When the valve is to be opened, the N pole of the second magnetic block 13 faces the first magnetic block 12. After the valve is opened or closed, the S pole faces the first magnetic block 12. The rotating handle 4 has an encryption channel 15 located around the second magnetic block 13. The encryption sleeve 14 passes through the encryption channel 15. The end of the second magnetic block 13 resists the inner end face of the encryption sleeve 14. The rotating handle 4 has a limiting block 10 that restricts the removal of the encryption sleeve 14. The limiting block 10 is located on the bottom side of the encryption sleeve 14. The rotating handle 4 has an annular channel 11 that communicates with the encryption channel 15. The rotating handle 4 also has a through-hole channel 16 for the limiting block 10 to slide in and out.

[0019] In order to allow the sliding block 8 to slide into the second channel 6 more easily, a spring 7 is also included. One end of the spring 7 is connected to the sliding block 8, and the other end of the spring 7 is connected to the bottom of the second channel 6.

[0020] In order to enable the worm gear 3 to better cooperate with the rotating handle 4 for rotation, a slide rail is also included. The slide rail is provided on the worm gear 3, and the rotating handle 4 is provided with a sliding groove. The slide rail is slidably disposed in the sliding groove.

[0021] Working principle:

[0022] When the valve is to be used, rotate the encryption sleeve 14. The limiting block 10 rotates within the annular channel 11. When the limiting block 10 rotates to the point of exiting the channel 16, remove the encryption sleeve 14, then remove the second magnet and insert the N pole of the second magnet into the socket channel. At this time, the second magnet attracts the first magnet, causing one end of the sliding block 8 to slide into the first channel 9, while the other end remains in the second channel 6. This connects the rotating handle 4 with the worm gear 3. Then, rotate the handle 4, which drives the worm gear 3 to rotate. The worm gear 3 drives the worm wheel to rotate, which in turn drives the valve shaft to rotate, thereby opening the valve or adjusting the flow and pressure of the valve. After use, remove the second magnetic block 13 and insert its S pole into the socket channel. At this time, the first magnetic block 12 and the second magnetic block 13 repel each other, pushing the sliding block 8 fully into the second channel 6. Then, insert the encryption sleeve 14 into the encryption channel 15, covering the second magnetic block 13. Then, rotate the encryption sleeve 14 in a staggered manner. At this time, the rotating handle 4 is disconnected from the worm gear 3. When the rotating handle 4 is rotated, it spins freely and cannot drive the worm gear 3 to rotate. If others do not know the operating procedure, they will not be able to open or close the valve, thus preventing others from maliciously opening or closing the valve, avoiding economic losses and production damage, and thus facilitating the management of staff.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A piston-type flow regulating and pressure regulating valve, comprising a valve body, a piston flow regulating device disposed within the valve body for regulating flow, and a valve shaft rotatably passing through the valve body, one end of the valve shaft being connected to the piston flow regulating device, and the other end of the valve shaft extending out of the valve body; a drive housing is disposed on the valve body, the valve shaft being located within the drive housing; a worm gear is sleeved on the valve shaft; a worm is rotatably disposed on the drive housing, one end of the worm meshing with the worm gear for transmission, and the other end of the worm extending out of the drive housing, characterized in that: It also includes a rotating handle, which is rotatably sleeved on the end of the worm gear. The rotating handle is located outside the drive box. A first channel is opened inside the rotating handle, and a second channel connected to the first channel is opened at the end of the worm gear. A sliding block is slidably arranged in the second channel. A sliding device is provided between the rotating handle and the worm gear to drive the sliding block into the second channel.

2. The piston-type flow regulating and pressure regulating valve according to claim 1, characterized in that: The sliding device includes a first magnetic block with an S pole and a second magnetic block with N and S poles. The first magnetic block is located inside the sliding block. The rotating handle has a socket channel that communicates with the outside. The second magnetic block is located inside the socket channel. When the valve is to be opened, the N pole of the second magnetic block faces the first magnetic block. After the valve is opened or closed, the S pole faces the first magnetic block. The rotating handle is equipped with an encryption device to prevent others from taking the second magnetic block.

3. A piston-type flow regulating and pressure regulating valve according to claim 2, characterized in that: The encryption device includes an encryption sleeve. The rotating handle has an encryption channel on the periphery of the second magnetic block. The encryption sleeve passes through the encryption channel. The end of the second magnetic block resists the inner end face of the encryption sleeve. The rotating handle has a limiting device to restrict the removal of the encryption sleeve.

4. A piston-type flow regulating and pressure regulating valve according to claim 3, characterized in that: The limiting device includes a limiting block located on the bottom side of the encryption sleeve. The rotating handle has an annular channel that is connected to the encryption channel. The rotating handle also has a through-channel for the limiting block to slide in and out.

5. A piston-type flow regulating and pressure regulating valve according to claim 1, characterized in that: It also includes a spring, one end of which is connected to a sliding block, and the other end of which is connected to the bottom of the second channel.

6. A piston-type flow regulating and pressure regulating valve according to claim 1, characterized in that: It also includes a slide rail, which is mounted on the worm gear, and the rotating handle has a groove, in which the slide rail is slidably mounted.

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