Gas-water pressure reducing device

Abstract

The utility model relates to an air-water pressure reducing device which comprises a valve body, an adjusting lead screw and a valve element. The valve body is provided with a first inner cavity, a water outlet formed in the bottom end of the valve body and a water inlet perpendicularly formed in the side face of the valve body. The adjusting lead screw is in threaded connection with the upper end of the valve body and extends into the first inner cavity. The top end of the valve element is fixedly connected to the bottom end of the adjusting lead screw, the outer diameter of the bottom end of the valve element is larger than the inner diameter of the water outlet, a throttling device is arranged at the bottom end of the valve element and provided with a second inner cavity, the barrel face of the throttling device is attached to the inner side face of the water outlet, and holes are formed in the barrel face and the bottom face of the throttling device. When the adjusting lead screw is rotated, the adjusting lead screw and the valve body generate threaded displacement, the valve element is driven to longitudinally move in the first inner cavity, and the throttling device is driven to longitudinally move in the second inner cavity so as to open or close the hole. Water flow passes through the formed holes, the area of the fluid section is reduced, the water flow is further decompressed, the fineness in the microbubble generation process is improved, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas water pressure reducing technical field especially relates to gas water pressure reducing device. BACKGROUND

[0002] The existing dissolved air flotation machine dissolves air into water by high pressure, and then releases the air under low pressure to form bubbles, which causes pressure reduction effect by the change of flow section and local resistance such as elbow. However, the water flow is unstable, the pressure reduction effect is insufficient, the fine density of bubbles in water cannot be well controlled, and the process of generating micro-bubbles is uneven, insufficient and low in fine density.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model discloses a gas water pressure reducing device, which solves the problem that the existing gas water pressure reducing device cannot well control the fine density of bubbles in water, resulting in insufficient fine density in the process of generating micro-bubbles.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] The gas water pressure reducing device comprises a valve body, an adjusting screw rod and a valve core. The valve body has a first inner cavity, a water outlet arranged at the bottom end of the valve body, and a water inlet arranged vertically on the side surface of the valve body. The adjusting screw rod is threadedly connected to the upper end of the valve body and extends into the first inner cavity. The top end of the valve core is fixedly connected to the bottom end of the adjusting screw rod, the outer diameter of the bottom end of the valve core is greater than the inner diameter of the water outlet, the bottom end of the valve core is provided with a throttling device, the throttling device has a second inner cavity, the cylinder surface of the throttling device is attached to the inner surface of the water outlet, and holes are formed in the cylinder surface and the bottom surface of the throttling device.

[0007] The adjusting screw rod is rotated, the adjusting screw rod and the valve body are threadedly displaced, the valve core is driven to move longitudinally in the first inner cavity, the throttling device is driven to move longitudinally in the water outlet, and the holes are opened or closed.

[0008] Further, the side surface of the throttling device is further provided with a limiting block, the water outlet is further provided with a limiting groove, and the limiting block slides in the limiting groove.

[0009] Further, the holes in the cylinder surface and the bottom surface of the throttling device are several, and the several holes are distributed longitudinally and laterally on the cylinder surface and the bottom surface of the throttling device.

[0010] Further technical solutions are that the valve body further comprises an element port, the element port is arranged at the top end of the valve body, the element port is provided with a first flange, the element port is provided with a threaded assembly, the threaded assembly is connected to the top of the first flange, and the adjusting screw rod is threadedly connected with the threaded assembly and extends into the valve body.

[0011] Further technical solutions are that the gas and water pressure reducing device further comprises a hand wheel, and the hand wheel is fixedly connected to the top of the adjusting screw rod.

[0012] Further technical solutions are that the threaded assembly further comprises a guide arranged at the top end of the first flange, a fixing disc arranged at the top end of the guide, and a threaded part clamped between the fixing disc and the guide, the guide and the disc are screw-connected to the first flange, the threaded part is compressed and fixed, the bottom end of the guide extends into the first inner cavity, the bottom end of the adjusting screw rod penetrates the guide, a sealing ring is arranged at the inner side of the bottom end of the guide, the sealing ring is sleeved on the adjusting screw rod, and the bottom end of the threaded part extends into the guide.

[0013] Further technical solutions are that the gas and water pressure reducing device further comprises a handle, the bottom end surface of the handle is tightly attached to the top end surface of the threaded assembly, the adjusting screw rod penetrates the handle, and the adjusting screw rod is threadedly matched with the handle.

[0014] Further technical solutions are that the water outlet further comprises a second flange arranged at the bottom end of the valve body, a water outlet pipe body, and a limiting part arranged in the valve body, a third flange is arranged at the top end, the second flange is screw-connected with the third flange, the bottom end of the water outlet pipe body is provided with a fourth flange, the limiting part is clamped on the water outlet pipe body, the limiting part has an axially penetrating third inner cavity, the outer diameter of the limiting part is smaller than the outer diameter of the valve core, the cylinder surface of the throttling device is attached to the inner side of the limiting part, and the throttling device can move longitudinally in the third inner cavity along the screw rod.

[0015] Further technical solutions are that the hand wheel is slot-key connected with the top end of the adjusting screw rod, and the valve core is slot-key connected with the bottom end of the adjusting screw rod.

[0016] Further technical solutions are that the water inlet end of the water inlet is provided with a fifth flange.

[0017] The beneficial effects of the embodiments of the utility model are as follows:

[0018] 1. The air-water pressure reducing device comprises a valve body, an adjusting screw rod and a valve core. The valve body has a first inner cavity, a water outlet arranged at the bottom end of the valve body and a water inlet arranged vertically at the side surface of the valve body, and the adjusting screw rod is threadedly connected to the upper end of the valve body and extends into the first inner cavity; the valve core is fixedly connected to the bottom end of the adjusting screw rod, the outer diameter of the bottom end of the valve core is larger than the inner diameter of the water outlet, the bottom end of the valve core is provided with a throttling device, the throttling device has a second inner cavity, the cylindrical surface of the throttling device is attached to the inner surface of the water outlet, and the cylindrical surface and the bottom surface of the throttling device are both provided with holes. Wherein, the adjusting screw rod is rotated, the adjusting screw rod and the valve body are threadedly displaced, the valve core is driven to move longitudinally in the first inner cavity, and the throttling device is driven to move longitudinally in the second inner cavity, so as to open or close the holes. The water flow passes through the opened holes, the area of the fluid section is reduced, the fineness of the micro-bubble generation process is further improved, and the working efficiency is improved.

[0019] 2. Further, since the bottom surface of the throttling device is provided with holes, the water flow enters the second inner cavity and passes through the holes in the bottom surface of the throttling device, so that the water flow is branched, the water flow is more stable, and the micro-bubble generation process is more uniform. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a vertical section structure schematic view of the air-water pressure reducing device.

[0021] Figure 2 It is a front view structure schematic view of the air-water pressure reducing device.

[0022] Figure 3 It is a top view structure schematic view of the throttling device in the air-water pressure reducing device.

[0023] Figure 4 It is a front view structure schematic view of the throttling device in the air-water pressure reducing device.

[0024] In the drawing:

[0025] 1, valve body; 11, first inner cavity; 12, water outlet; 121, second flange; 122, water outlet pipe body; 123, limiting piece; 124, third flange; 125, fourth flange; 126, third inner cavity; 127, limiting groove; 13, water inlet; 131, fifth flange; 14, element port; 141, first flange; 15, threaded assembly; 151, fixed disc; 152, guide piece; 153, threaded piece; 154, sealing ring; 2, adjusting screw rod; 3, valve core; 4, throttling device; 41, second inner cavity; 42, hole; 43, limiting block; 5, hand wheel; 6, handle. DETAILED DESCRIPTION

[0026] The specific implementation manner of the present application will be described below in combination with the drawings.

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the device proposed in the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0028] Example:

[0029] Figure 1 This is a schematic diagram of the vertical cross-section structure of the gas-water pressure reducing device of the present utility model. Figure 2 This is a front view structural diagram of the gas-water pressure reducing device of the present utility model. Figure 3 This is a schematic top view of the structure of the throttling device in the gas-water pressure reducing device of the present utility model. Figure 4 This is a schematic diagram of the main structure of the throttling device in the gas-water pressure reducing device of the utility model. Figures 1-4 As shown, the air-water pressure reducing device includes a valve body 1, an adjusting screw 2, and a valve core 3. The valve body 1 has a first inner cavity 11, a water outlet 12 located at the bottom end of the valve body 1, and a water inlet 13 located perpendicularly on the side of the valve body 1. The adjusting screw 2 is threadedly connected to the upper end of the valve body 1 and extends into the first inner cavity 11. The top end of the valve core 3 is fixedly connected to the bottom end of the adjusting screw 2. The outer diameter of the bottom end of the valve core 3 is larger than the inner diameter of the water outlet 12. Exemplarily, the valve core 3 is keyed to the bottom end of the adjusting screw 2. A throttling device 4 is provided at the bottom end of the valve core 3. The throttling device 4 is a hollow cylinder with a second inner cavity 41. The cylindrical surface of the throttling device 4 is in contact with the inner surface of the water outlet 12, and holes 42 are formed on the cylindrical surface and bottom surface of the throttling device 4. Exemplarily, there are multiple holes 42 on the cylindrical surface and bottom surface of the throttling device 4. The holes 42 are distributed longitudinally and transversely spaced on the cylindrical surface and bottom surface, increasing the flow channel for the liquid and further reducing the pressure of the liquid.

[0030] When the adjusting screw 2 is rotated, the adjusting screw 2 and the valve body 1 generate threaded displacement, and drive the valve core 3 to move longitudinally in the first inner cavity 11, driving the throttling device 4 to move longitudinally in the water outlet 12 to open or close the hole 42.

[0031] like Figure 4As shown, further, the throttle device 4 side lower end is also provided with a limiting block 43, the water outlet 12 is also provided with a limiting groove 127, the limiting block 43 slides in the limiting groove 127, and the longitudinal movement range of the throttle device 4 can be limited.

[0032] As shown, Figure 1 As shown, further, the valve body 1 also includes an element port 14, which is arranged at the top end of the valve body 1, and is provided with a first flange 141. The element port 14 is internally provided with a threaded assembly 15, which is connected to the top of the first flange 141. The adjusting screw rod 2 is threadedly connected to the threaded assembly 15 and extends into the valve body 1. As an example, the threaded assembly 15 also includes a guide 152 at the top end of the first flange 141, a fixed disc 151 at the top end of the guide 152, and a threaded part 153 clamped between the fixed disc 151 and the guide 152. The guide 152 and the fixed disc 151 are screwed to the first flange 141, and the threaded part 153 is compressed and fixed. The bottom end of the guide 152 extends into the first inner cavity 11, and the bottom end of the adjusting screw rod 2 penetrates the guide 152. The inner side of the bottom end of the guide 152 is provided with a sealing ring 154, which is sleeved on the adjusting screw rod 2. The bottom end of the threaded part 153 extends into the guide 152, so that the valve body 1 has better sealing performance.

[0033] As shown, Figure 1 As shown, further, the air and water pressure reducing device also includes a hand wheel 5, which is fixedly connected to the top of the adjusting screw rod 2. As an example, the hand wheel 5 is spline-connected to the top end of the adjusting screw rod 2.

[0034] As shown, Figure 1 As shown, further, the air and water pressure reducing device also includes a handle 6, the bottom end surface of which is closely attached to the top end surface of the threaded assembly 15. The adjusting screw rod 2 penetrates the handle 6 and is threadedly connected to the handle 6. Rotating the handle 6 can lock the adjusting screw rod 2 in the desired position.

[0035] As shown, Figure 1 As shown, further, the water outlet 12 also includes a second flange 121 arranged at the bottom end of the valve body 1, a water outlet pipe body 122, and a limiting part 123 arranged in the valve body 1. The top end of the water outlet pipe body 122 is provided with a third flange 124, the second flange 121 is bolted to the third flange 124, the bottom end of the water outlet pipe body 122 is provided with a fourth flange 125, and the limiting part 123 is clamped to the water outlet pipe body 122. The limiting part 123 has an axially penetrating third inner cavity 126, and the outer diameter of the limiting part 123 is smaller than the outer diameter of the valve core 3, so that the valve body 1 has better sealing performance. The barrel surface of the throttle device 4 is attached to the inner surface of the limiting part 123, and the throttle device 4 can move longitudinally in the third inner cavity 126.

[0036] As shown, Figure 2 As shown, further, the water inlet end of the water inlet 13 is provided with a fifth flange 131, so that the water inlet 13 is more convenient to connect with the water injection equipment.

[0037] The embodiment works as follows:

[0038] The water inlet 13 enters the dissolved air water, the rotating handle 5 is rotated, the adjusting screw rod 2 and the valve body 1 are threadedly displaced, the valve core 3 is longitudinally moved in the first inner cavity 11, the throttling device 4 is longitudinally moved in the water outlet 12, the hole 42 is opened, the water flow enters the first inner cavity 11 through the water inlet 13, then enters the second inner cavity 41 through the hole 42 in the cylinder surface of the throttling device 4, the area of the fluid section is reduced, the water flow is first decompressed, the water flow flows out from the hole 42 in the bottom surface of the throttling device 4 again from the second inner cavity 41, the area of the fluid section is reduced again, the water flow is secondly decompressed, the water flow is branched, the water flow is more stable, the process of generating the micro-bubbles is more uniform, the rotating handle 5 drives the valve core 3, the pressure is reduced to the working pressure preferred state of the water flow, the rotating handle 6 is rotated, and the adjusting screw rod 2 is locked in the position.

[0039] The technical features of the above-described embodiments can be combined arbitrarily, and for the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the description.

[0040] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, on the premise of not departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A gas-water pressure reducing device, characterized by, The utility model relates to a valve body (1) with a first inner cavity (11) comprising: a water outlet (12) provided at the bottom end of the valve body (1); a water inlet (13) provided vertically on the side of the valve body (1); an adjusting screw rod (2) threadedly connected to the upper end of the valve body (1) and extending into the first inner cavity (11); a valve core (3) fixedly connected to the bottom end of the adjusting screw rod (2), the outer diameter of the bottom end of the valve core (3) being larger than the inner diameter of the water outlet (12), the bottom end of the valve core (3) being provided with a throttling device (4) having a second inner cavity (41), the cylindrical surface of the throttling device (4) being in close contact with the inner side of the water outlet (12), and the cylindrical surface and the bottom surface of the throttling device (4) being provided with holes (42); wherein rotating the adjusting screw rod (2) causes the adjusting screw rod (2) to produce threaded displacement with the valve body (1) and drive the valve core (3) to move longitudinally in the first inner cavity (11) and drive the throttling device (4) to move longitudinally in the water outlet (12) to open or close the holes (42). The side of the throttling device (4) is further provided with a limiting block (43), and the water outlet (12) is further provided with a limiting groove (127), and the limiting block (43) slides in the limiting groove (127).

2. The gas and water pressure reducing device according to claim 1, characterized by: The holes (42) on the cylindrical surface and the bottom surface of the throttling device (4) are a plurality of, and the plurality of holes (42) are longitudinally and laterally spaced apart and distributed on the cylindrical surface and the bottom surface.

3. The gas and water pressure reducing device according to claim 1, characterized by: The valve body (1) further comprises an element port (14) provided at the top end of the valve body (1), the element port (14) is provided with a first flange (141), the element port (14) is provided with a threaded assembly (15), the threaded assembly (15) is connected to the top of the first flange (141), and the adjusting screw rod (2) is threadedly connected to the threaded assembly (15) and extends into the valve body (1).

4. The gas and water pressure reducing device according to claim 1, characterized by: The gas-water pressure reducing device further comprises a hand wheel (5) fixedly connected to the top of the adjusting screw rod (2).

5. The gas and water pressure reducing device according to claim 1, characterized by: The threaded assembly (15) further comprises:

6. The gas and water pressure reducing device according to claim 4, characterized by: a guide (152) located at the top end of the first flange (141), the bottom end of the guide (152) extending into the first inner cavity (11), the bottom end of the guide (152) being provided with a sealing ring (154), and the sealing ring (154) being sleeved on the adjusting screw rod (2); a fixed disc (151) located at the top end of the guide (152); a threaded part (153) clamped between the fixed disc (151) and the guide (152), the bottom end of the threaded part (153) extending into the guide (152), and the guide (152) and the fixed disc (151) being screw-connected to the first flange (141) to compress and fix the threaded part (153). ​ 7. The gas and water pressure reducing device according to claim 4, characterized by: The gas-water decompression device further comprises a handle (6), a bottom end surface of the handle (6) is tightly attached to a top end surface of the threaded assembly (15), the adjusting screw rod (2) penetrates through the handle (6), and the adjusting screw rod (2) is threadedly matched with the handle (6).

8. The gas and water pressure reducing device according to claim 1, characterized by: The water outlet (12) further comprises: a second flange (121) arranged at a bottom end of the valve body (1); a water outlet pipe body (122) provided with a third flange (124) at a top end, the second flange (121) is bolted with the third flange (124), and the water outlet pipe body (122) is provided with a fourth flange (125) at a bottom end; a limiting member (123) arranged in the valve body (1), the limiting member (123) is clamped to the water outlet pipe body (122), the limiting member (123) has a third inner cavity (126) axially penetrating through, an outer diameter of the limiting member (123) is smaller than an outer diameter of the valve core (3), a cylindrical surface of the throttling device (4) is attached to an inner side surface of the limiting member (123), and the throttling device (4) is longitudinally movable in the third inner cavity (126) along with the adjusting screw rod (2).

9. The gas and water pressure reducing device according to claim 5, characterized by: The handle (5) is connected with a top end groove key of the adjusting screw rod (2), and the valve core (3) is connected with a bottom end groove key of the adjusting screw rod (2).

10. The gas and water pressure reducing device according to claim 1, characterized by: The water inlet (13) is provided with a fifth flange (131) at a water inlet end.

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