Squirrel cage and flow and pressure regulating valve

Abstract

The invention relates to the technical field of valves, in particular to a squirrel cage and a flow and pressure regulating valve, the squirrel cage comprises a ring body, a plurality of groups of flow holes are uniformly formed in the circumferential direction of the ring body, a funnel is uniformly distributed in each flow hole, and each funnel comprises two symmetrically arranged shifting pieces; each shifting piece comprises a mounting part and a flow guide part, the mounting parts are mounted on the outer ring surface of the ring body, the flow guide parts are inserted into the flow holes, and the distance between the two flow guide parts is gradually decreased in the medium flowing direction; in the installation state, the funnel is arranged in the flow hole and divides the flow hole into two buffer areas and a circulation area, and the circulation area is arranged between the two buffer areas to allow media to pass through. Through the arrangement of the two shifting pieces, the free ends of the two flow guide parts can be expanded or folded along with pressure fluctuation, so that the flow speed of a medium is controlled within a certain interval, and noise generated by collision energy dissipation is controlled within a certain range.

Description

Technical Field

[0001] The invention relates to the field of valve technology, in particular to a squirrel cage, including a flow regulating and pressure regulating valve of the squirrel cage. Background Art

[0002] The flow and pressure regulating valve is a type of valve, which mainly includes a valve stem, a connecting rod, a piston and a squirrel cage. The squirrel cage is installed in the flow channel. The valve stem can rotate to drive the piston and the squirrel cage to move in the valve body through the connecting rod to adjust the water volume. Its core feature is that the mesh holes opened circumferentially on the squirrel cage can make the sprayed water flow collide with each other to eliminate the velocity energy, that is, to reduce the outlet pressure and noise by dissipating energy through collision.

[0003] However, in actual use, since the inlet pressure fluctuates, that is, it keeps changing within a certain range, that is, the medium flow rate at the outlet fluctuates, the noise caused by the collision of the media cannot be controlled in a stable range. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and provides a squirrel cage and a flow regulating and pressure regulating valve. The specific technical solutions are as follows:

[0005] The squirrel cage comprises a ring body, wherein a plurality of flow holes are evenly opened in the circumference of the ring body, a funnel is evenly arranged in each flow hole, and the funnel comprises two symmetrically arranged paddles;

[0006] The paddle comprises a mounting portion and a flow guide portion, wherein the mounting portion is mounted on the outer annular surface of the annular body, the flow guide portion is inserted into the flow hole, and the distance between the two flow guide portions decreases along the flow direction of the medium;

[0007] In the installed state, the funnel is installed in the flow hole and divides it into two buffer areas and a flow area, and the flow area is arranged between the two buffer areas to allow the medium to pass through; when the pressure is increased, the buffer area shrinks to absorb energy, and the flow area expands to reduce speed; when the pressure is reduced, the buffer area expands to release energy, and the flow area shrinks to accelerate;

[0008] The buffer area is the area between the flow guide portion and the end wall of the flow hole, and the flow area is the area between the free ends of the two flow guide portions.

[0009] As a further technical solution of the present invention, two fascias in a pre-stretched state are connected between the two guide parts b. The two fascias are distributed at the two ends of the guide parts b and cause the free ends of the two guide parts b to retract inward.

[0010] On the other hand, the present application also provides a flow regulating and pressure regulating valve, including the above-mentioned squirrel cage, and also including an outer valve seat and an inner valve seat arranged inside the outer valve seat, wherein there is a gap between the outer valve seat and the inner valve seat to form a medium flow channel for medium circulation, one end of the inner valve seat is open, and a valve port connecting the medium flow channel is formed between the open end and the outlet of the outer valve seat, and the squirrel cage is installed in the valve port.

[0011] As a further technical solution of the present invention, the opening end of the inner valve seat is slidably connected with a piston ring, and a driving part is arranged in the inner valve seat, the output end of the driving part is drivingly connected with the piston ring, and the piston ring is driven by the driving part to slide and adjust the throttling area of ​​the valve port;

[0012] The piston ring is coaxially arranged in the squirrel cage.

[0013] As a further technical solution of the present invention, a pressure ring is installed at the outlet of the outer valve seat, and both ends of the ring body have a convex strip protruding outwardly, and a second notch is opened on the end surface of the pressure ring facing the squirrel cage, and a first notch is opened on the end surface of the inner valve seat facing the squirrel cage;

[0014] In the installed state, the pressure ring presses the squirrel cage tightly against the inner valve seat, and the two convex strips are respectively inserted into the first recess and the second recess.

[0015] As a further technical solution of the present invention, the ring body is in indirect contact with both the inner valve seat and the pressure ring through two sets of sealing rings;

[0016] In the installed state, the sealing ring is squeezed and deformed to form a U-shaped edging and two edge portions, wherein the U-shaped edging is wrapped around the convex strip, and the two edge portions are respectively connected to the two ends of the U-shaped edging and cover the ends of the ring body.

[0017] As a further technical solution of the present invention, the driving part includes a driving shaft rotatably arranged in the inner valve seat, the piston ring is externally connected to a crank, the other end of the crank is rotatably connected to a connecting rod, the other end of the connecting rod is rotatably connected to a fixing rod, and the fixing rod is fixedly connected to the piston ring.

[0018] As a further technical solution of the present invention, ribs are connected between the outer valve seat and the inner valve seat, and the ribs are provided in a plurality of groups, and the plurality of groups of ribs are evenly distributed in the medium flow channel along the circumferential direction.

[0019] The beneficial effects of the present invention are as follows:

[0020] (1) In the present application, by setting two paddles, the free ends of the two flow guides can expand or contract with pressure fluctuations, thereby controlling the flow rate of the medium within a certain range and controlling the noise generated by collision energy dissipation within a certain range.

[0021] (2) In the present application, the squirrel cage is no longer connected to the front end of the piston ring, but is instead sleeved outside the piston ring, thus changing the traditional single-layer structure to a double-layer structure with inner and outer layers closely adjacent to each other. This not only reduces the axial length, but also enables the piston ring to support the squirrel cage from the inside to the outside, thereby improving the structural strength.

[0022] (3) In the present application, the squirrel cage is indirectly installed between the pressure ring and the inner valve seat through the cooperation of the convex strip and the sealing ring, so as to prevent the squirrel cage from causing the entire device to vibrate synchronously when it is impacted and vibrates, thereby reducing vibration transmission and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structural schematic diagram of the flow regulating and pressure regulating valve is shown;

[0024] Figure 2 A schematic diagram of the internal structure of the outer valve seat is shown;

[0025] Figure 3 A schematic diagram showing the position structure of the piston ring is shown;

[0026] Figure 4 A schematic diagram of the internal structure of the inner valve seat is shown;

[0027] Figure 5 The exploded structural diagram of the inner valve seat, squirrel cage and pressure ring is shown;

[0028] Figure 6 The schematic diagram of the structure of the sealing ring in the installed state is shown;

[0029] Figure 7 A schematic diagram of the structure of the funnel is shown;

[0030] Figure 8 A schematic diagram of the structure of the funnel in the installed state is shown.

[0031] Description of the drawings: 100, outer valve seat; 200, inner valve seat; 210, piston ring; 220, drive part; 221, drive shaft; 222, crank; 223, connecting rod; 224, fixing rod; 230, notch one; 300, medium flow channel; 310, valve port; 400, rib; 500, squirrel cage; 510, ring body; 520, flow hole; 530, convex strip; 540, sealing ring; 541, U-shaped edging; 542, edge; 550, funnel; 551, paddle; 551a, mounting part; 551b, guide part; 552, fascia; 553, buffer area; 554, flow area; 600, pressure ring; 610, notch two. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0033] Figure 1 The structural schematic diagram of the flow regulating and pressure regulating valve is shown; Figure 2 A schematic diagram of the internal structure of the outer valve seat 100 is shown; Figure 3 A schematic diagram showing the position structure of the piston ring 210 is shown; Figure 1-Figure 3 In the embodiment, the flow regulating and pressure regulating valve comprises an outer valve seat 100 and an inner valve seat 200 arranged in the outer valve seat 100. There is a gap between the outer valve seat 100 and the inner valve seat 200 to form a medium flow channel 300 for medium circulation. A rib 400 is connected between the outer valve seat 100 and the inner valve seat 200. There are six groups of ribs 400. The six groups of ribs 400 are evenly distributed in the medium flow channel 300 along the circumferential direction, so as to ensure the stability of the overall frame. One end of the inner valve seat 200 is open, and a valve port 310 connected to the medium flow channel 300 is formed between the open end and the outlet of the outer valve seat 100. In actual use, when the medium circulates through the medium flow channel 300, it must reach the outlet through the valve port 310. A squirrel cage 500 is arranged at the valve port 310. The squirrel cage 500 is arranged on the necessary path for the medium to circulate, so as to be able to divert the medium. The open end of the inner valve seat 200 is slidably connected to the outer valve seat 100. A piston ring 210 is connected, and the piston ring 210 is coaxially arranged in the squirrel cage 500, and a driving part 220 is arranged in the inner valve seat 200, and the output end of the driving part 220 is transmission-connected to the piston ring 210, and the piston ring 210 is driven by the driving part 220 to slide and adjust the throttling area of ​​the valve port 310, thereby controlling the flow rate; in the present application, the squirrel cage 500 is not connected to the front end of the piston ring 210, but is sleeved outside the piston ring 210. This is because when the squirrel cage 500 is connected to the front end of the piston ring 210, with the impact of the water flow, the free end of the squirrel cage 500 will gradually retract inward, resulting in a loose valve closure, part of the medium no longer passes through the mesh, and the purpose of jet collision energy dissipation cannot be achieved, which changes the traditional single-layer structure and adopts a double-layer structure with inner and outer layers close to each other, which not only reduces the axial length, but also the piston ring 210 can support the squirrel cage 500 from the inside to the outside, thereby improving the structural strength.

[0034] Figure 4 A schematic diagram of the internal structure of the inner valve seat 200 is shown; Figure 4 In the embodiment, the driving part 220 includes a driving shaft 221 rotatably arranged in the inner valve seat 200, and the piston ring 210 is externally connected to a crank 222, and the other end of the crank 222 is rotatably connected to a connecting rod 223, and the other end of the connecting rod 223 is rotatably connected to a fixing rod 224, and the fixing rod 224 is fixedly connected to the piston ring 210; when the piston ring 210 is driven to rotate, the driving shaft 221 can drive the crank 222 to swing, and pull the fixing rod 224 and the piston ring 210 to slide through the connecting rod 223, that is, the sliding of the piston ring 210 is driven by the driving part 220. It should be noted that the other end of the driving shaft 221 extends outward and is externally connected to a power source, and the specific power source is not limited in this application.

[0035] Figure 5 The exploded structural diagram of the inner valve seat 200, the squirrel cage 500 and the pressure ring 600 is shown; Figure 6 shows a schematic structural diagram of the sealing ring 540 in an installed state; Figure 5 In the figure, a pressure ring 600 is installed at the outlet of the outer valve seat 100, and the installation here is detachable, and can be threaded, bolted, etc.; in the installed state, the pressure ring 600 presses the cage 500 to be close to the inner valve seat 200; this shows that the cage 500 is restricted between the pressure ring 600 and the inner valve seat 200, which can ensure axial stability, and both sides are blocked, and the valve port 310 can be completely covered; the cage 500 includes a ring body 510, and both ends of the ring body 510 are convex with a convex strip 530, and the end surface of the pressure ring 600 facing the cage 500 is provided with a notch 210, and the end surface of the inner valve seat 200 facing the cage 500 is provided with a notch 230, and in the installed state, the two convex strips 530 are respectively inserted into the notch 230 and the notch 210; the setting of the convex strip 530, both ends of the ring body 510, The assembly between the inner valve seat 200, the cage 500 and the pressure ring 600 can be positioned, and the relative positions of the three in the radial direction can be limited to ensure that the cage 500 does not deviate in the radial direction; the ring body 510 is in indirect contact with the inner valve seat 200 and the pressure ring 600 through two sets of sealing rings 540. In the installed state, the sealing ring 540 is squeezed and deformed to form a U-shaped edge 541 and two edge portions 542, wherein the U-shaped edge 541 is covered outside the convex strip 530, and the two edge portions 542 are respectively connected to the two ends of the U-shaped edge 541 and cover the end of the ring body 510; through the setting of the sealing ring 540, the cage 500 is indirectly connected to the entire device, so as to avoid the cage 500 from causing the entire device to vibrate synchronously when it is impacted and vibrates, thereby reducing vibration transmission and noise.

[0036] Figure 7 shows a schematic structural diagram of a funnel 550; Figure 8 shows a schematic structural diagram of the funnel 550 in an installed state; Figure 7 and Figure 8In the embodiment, a plurality of groups of flow holes 520 are evenly opened in the circumferential direction of the ring body 510, and a funnel 550 is evenly arranged in each flow hole 520. The funnel 550 includes two symmetrically arranged paddles 551, and the paddle 551 includes a mounting portion 551a and a flow guide portion 551b. The mounting portion 551a is mounted on the outer ring surface of the ring body 510, and the flow guide portion 551b is inserted into the flow hole 520. Along the flow direction of the medium, the distance between the two flow guide portions 551b decreases; in the installed state, the funnel 55 0 is installed in the flow hole 520 and is divided into two buffer areas 553 and a flow area 554 located between the two buffer areas 553, wherein the buffer area 553 is the area between the guide portion 551b and the end wall of the flow hole 520, and the flow area 554 is the area between the free ends of the two guide portions 551b. When the pressure is increased, the buffer area 553 is reduced to absorb energy, and the flow area 554 is expanded to reduce speed. When the pressure is reduced, the buffer area 553 is expanded to release energy, and the flow area 554 is reduced to reduce speed. Acceleration; the deceleration and acceleration mentioned here refer to the fluid, that is, reducing the flow rate and speeding up the flow rate; when the medium pressure fluctuates, the pressure is increased, and when the medium flows through the flow area 554 formed between the two guide parts 551b, it will compress the two guide parts 551b to expand outward, thereby increasing the flow area 554 and reducing the flow rate; when the pressure is reduced, the elastic force of the two guide parts 551b themselves will shrink inward to reduce the flow area 554, thereby increasing the flow rate; through this structure, the flow rate can be automatically adjusted within a certain pressure range, so that the noise generated by the collision energy dissipation is controlled within a certain range; two fascias 552 in a pre-stretched state are connected between the two guide parts 551b, and the two fascias 552 are distributed at the two ends of the guide part 551b and cause the free ends of the two guide parts 551b to shrink inward; that is, under normal conditions, the inward contraction force of the fascia 552 will drive the two guide parts 551b to approach each other, that is, reduce the area of ​​the flow area 554 in the initial state.

[0037] It should be noted that, in the present application, both the paddle 551 and the fascia 552 have a deformable function, wherein the paddle 551 is a copper sheet and the fascia 552 is rubber.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A mouse cage, characterized in that: It comprises a ring body (510), wherein the ring body (510) is evenly provided with a plurality of groups of flow holes (520) in the circumferential direction, and each flow hole (520) is evenly provided with a funnel (550), and the funnel (550) comprises two symmetrically arranged paddles (551); The paddle (551) comprises a mounting portion (551a) and a flow guide portion (551b), wherein the mounting portion (551a) is mounted on the outer annular surface of the ring body (510), and the flow guide portion (551b) is inserted into the flow hole (520), and along the flow direction of the medium, the distance between the two flow guide portions (551b) decreases gradually; In the installed state, the funnel (550) is installed in the flow hole (520) and divides it into two buffer areas (553) and a flow area (554), and the flow area (554) is arranged between the two buffer areas (553) to allow the medium to pass through; when the pressure is increased, the buffer area (553) shrinks to absorb energy, and the flow area (554) expands to reduce speed; when the pressure is reduced, the buffer area (553) expands to release energy, and the flow area (554) shrinks to accelerate; The buffer area (553) is the area between the flow guide portion (551b) and the end wall of the flow hole (520), and the flow area (554) is the area between the free ends of the two flow guide portions (551b).

2. The mouse cage according to claim 1, characterized in that: Two fascias (552) in a pre-stretched state are connected between the two flow guides (551b); the two fascias (552) are distributed at two ends of the flow guides (551b) and cause the free ends of the two flow guides (551b) to retract inwards.

3. A flow regulating and pressure regulating valve, comprising the squirrel cage according to claim 1 or 2, characterized in that: The invention also comprises an outer valve seat (100) and an inner valve seat (200) arranged inside the outer valve seat (100); a gap is provided between the outer valve seat (100) and the inner valve seat (200) to form a medium flow channel (300) for medium circulation; one end of the inner valve seat (200) is open, and a valve port (310) connected to the medium flow channel (300) is formed between the open end and the outlet of the outer valve seat (100); the squirrel cage is installed in the valve port (310).

4. The flow regulating and pressure regulating valve according to claim 3, characterized in that: The open end of the inner valve seat (200) is slidably connected to a piston ring (210), and a driving part (220) is arranged inside the inner valve seat (200), the output end of the driving part (220) is drivingly connected to the piston ring (210), and the piston ring (210) is driven by the driving part (220) to slide and adjust the throttling area of ​​the valve port (310); The piston ring (210) is coaxially arranged in the squirrel cage (500).

5. The flow regulating and pressure regulating valve according to claim 4, characterized in that: The outlet of the outer valve seat (100) is provided with a pressure ring (600), both ends of the ring body (510) are provided with a convex strip (530), the end surface of the pressure ring (600) facing the squirrel cage (500) is provided with a second notch (610), and the end surface of the inner valve seat (200) facing the squirrel cage (500) is provided with a first notch (230); In the installed state, the pressure ring (600) presses the squirrel cage (500) to be close to the inner valve seat (200), and the two convex strips (530) are respectively inserted into the first recess (230) and the second recess (610).

6. The flow regulating and pressure regulating valve according to claim 5, characterized in that: The ring body (510) is in indirect contact with both the inner valve seat (200) and the pressure ring (600) through two sets of sealing rings (540); In the installed state, the sealing ring (540) is squeezed and deformed to form a U-shaped edging (541) and two edge portions (542), wherein the U-shaped edging (541) is wrapped around the convex strip (530), and the two edge portions (542) are respectively connected to the two ends of the U-shaped edging (541) and cover the ends of the ring body (510).

7. The flow regulating and pressure regulating valve according to claim 6, characterized in that: The driving part (220) includes a driving shaft (221) rotatably arranged in the inner valve seat (200); the piston ring (210) is externally connected to a crank (222); the other end of the crank (222) is rotatably connected to a connecting rod (223); the other end of the connecting rod (223) is rotatably connected to a fixing rod (224); and the fixing rod (224) is fixedly connected to the piston ring (210).

8. The flow regulating and pressure regulating valve according to claim 6, characterized in that: A rib (400) is connected between the outer valve seat (100) and the inner valve seat (200), and the ribs (400) are arranged in a plurality of groups, and the plurality of groups of ribs (400) are evenly distributed in the medium flow channel (300) along the circumferential direction.

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