Low-pressure bypass regulating valve with good sealing performance

Abstract

The utility model relates to the technical field of regulating valves, in particular to a low-pressure bypass regulating valve with good sealing performance, which comprises a valve body, a partition plate is arranged in the middle of the valve body, a through hole is arranged in the middle of the partition plate, a sleeve is arranged in the middle of the through hole, a valve core is arranged in the sleeve, a valve rod is arranged at the top end of the valve core, and a valve rod is arranged at the top end of the valve rod. A valve cover is arranged at the top end of the valve body, a fixing seat is arranged at the top end of the valve cover, and an electric mechanism is arranged at the top end of the fixing seat; the valve has the beneficial effects that through the arrangement of the sleeve and the valve element, the sleeve is fixedly connected to the top end of the partition plate during use, a first sealing ring is arranged at the joint between the partition plate and the sleeve, a second sealing ring is arranged at the joint between the sleeve and the valve cover, the valve element is slidably connected into the sleeve, and the surface of the valve element is sleeved with a third sealing ring; therefore, a better sealing effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of governing valve, concretely to a low pressure bypass governing valve with good sealing performance. BACKGROUND

[0002] The governing valve is a valve for changing the flow of fluid by power operation, which is composed of two main components: valve body component and actuator component, and is divided into four series: single seat series control valve, double seat series control valve, sleeve series control valve and self force series control valve. Variants of the four types of valves can result in many different applicable structures, each of which has its special application, characteristics, advantages and disadvantages.

[0003] The low pressure bypass governing valve with good sealing performance disclosed in Chinese utility model patent application publication No. CN221054387U includes: an electric device, a valve rod fixedly connected below the electric device, and a first flange plate fixedly arranged on the outer surface of the valve rod. In the utility model, the electric device is started to move the valve rod pushing device through the valve rod, the water inlet pipeline starts to fill water, and the valve rod pushing device starts to move downward. Since the size of the valve rod pushing device matches the inner diameter size of the water tank, the water filling speed can be effectively reduced when the valve rod pushing device moves below the water inlet pipeline. The water tank and the governing valve bottom plate form a sealed space to prevent water from penetrating out. The water inlet pipeline enters the water outlet pipeline through the pushing of the valve rod pushing device, and then the valve rod pushing device is lifted upward for reciprocating movement. The soundproof cabin installed on the periphery of the water tank can effectively reduce the noise and vibration inside the water tank, improve the stability and sealing performance of the governing valve. However, the sealing performance of the low pressure bypass governing valve with good sealing performance is not very good. SUMMARY

[0004] The utility model aims at providing a low pressure bypass governing valve with good sealing performance to solve the problems in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A low pressure bypass governing valve with good sealing performance includes:

[0007] A valve body is provided with a partition plate in the middle, a through hole in the middle of the partition plate, a sleeve in the middle of the through hole, a valve core in the inside of the sleeve, a valve rod at the top end of the valve core, a valve cover at the top end of the valve body, a fixed seat at the top end of the valve cover, and an electric mechanism at the top end of the fixed seat.

[0008] Preferably, an air inlet flange is fixedly connected to one side of the valve body, and an air outlet flange is fixedly connected to the other side of the valve body.

[0009] Preferably, the middle part of the valve body is provided with a cavity chamber, and the middle part of the cavity chamber is fixedly connected with a partition plate.

[0010] Preferably, the middle part of the partition plate is provided with a through hole, and the inner wall surface of the through hole is provided with a clamping groove.

[0011] Preferably, the top end of the through hole is fixedly connected with a sleeve, the bottom end of the sleeve is provided with an air outlet hole, the surface of the sleeve is uniformly provided with a plurality of air inlet holes, and the top end of the sleeve is sleeved with a second sealing ring.

[0012] Preferably, the inside of the sleeve is slidably connected with a valve core, the surface of the valve core is sleeved with a third sealing ring, and the top end of the valve core is fixedly connected with a valve rod.

[0013] Preferably, the top end of the valve body is fixedly connected with a valve cover, the edges of the top end of the valve cover are uniformly inserted with a plurality of fixing bolts, and the other ends of the fixing bolts are threadedly connected with the top end of the valve body.

[0014] Preferably, the four corners of the top end of the valve cover are fixedly connected with supporting rods, the top ends of the supporting rods are fixedly connected with fixing seats, the top ends of the fixing seats are fixedly connected with electric mechanisms, and the output ends of the electric mechanisms are fixedly connected with the top end of the valve rod.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The sleeve is fixedly connected to the top end of the partition plate, the first sealing ring is arranged at the connecting position between the partition plate and the sleeve, the second sealing ring is arranged at the connecting position between the sleeve and the valve cover, the valve core is slidably connected to the inside of the sleeve, and the surface of the valve core is sleeved with the third sealing ring, so that the sealing effect is better. ACCURACY

[0017] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0018] Figure 2 It is a valve body structure schematic view of the utility model;

[0019] Figure 3 It is a valve body internal structure schematic view of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of this utility model;

[0021] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A;

[0022] Figure 6 This is a schematic diagram of the sleeve structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the valve core structure of this utility model.

[0024] In the diagram: 1. Valve body; 101. Cavity; 2. Inlet flange; 3. Outlet flange; 4. Baffle plate; 401. Through hole; 402. Slot; 5. First sealing ring; 6. Sleeve; 601. Outlet port; 602. Inlet port; 603. Second sealing ring; 7. Valve core; 8. Third sealing ring; 9. Valve stem; 10. Valve cover; 1001. Fixing bolt; 11. Support rod; 12. Fixing seat; 13. Electric mechanism. Detailed Implementation

[0025] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0026] Example 1:

[0027] Please see Figures 1 to 7 This utility model provides a technical solution: a low-pressure bypass regulating valve with good sealing performance, comprising:

[0028] The valve body 1 has a partition 4 in the middle, a through hole 401 in the middle, a sleeve 6 in the middle of the through hole 401, a valve core 7 inside the sleeve 6, a valve stem 9 at the top of the valve core 7, a valve cover 10 at the top of the valve body 1, a fixing seat 12 at the top of the valve cover 10, and an electric mechanism 13 at the top of the fixing seat 12.

[0029] With the sleeve 6 and valve core 7 in use, the sleeve 6 is fixedly connected to the top of the partition 4, and a first sealing ring 5 is provided at the connection between the partition 4 and the sleeve 6. A second sealing ring 603 is provided at the connection between the sleeve 6 and the valve cover 10. The valve core 7 is slidably connected inside the sleeve 6, and a third sealing ring 8 is fitted on the surface of the valve core 7, thereby achieving a better sealing effect.

[0030] Example 2:

[0031] like Figures 2 to 7As shown, the low-pressure bypass regulating valve with good sealing performance disclosed in Embodiment 2 of this utility model has a structure that is basically the same as that in Embodiment 1, except that:

[0032] An inlet flange 2 is fixedly connected to one side of the valve body 1, and an outlet flange 3 is fixedly connected to the other side of the valve body 1.

[0033] A cavity 101 is provided in the middle of the valve body 1. A partition 4 is fixedly connected to the middle of the cavity 101. The partition 4 divides the cavity 101 into an air inlet chamber and an air outlet chamber in sequence.

[0034] The partition 4 has a through hole 401 in the middle, and a groove 402 is formed on the inner wall surface of the through hole 401. A first sealing ring 5 is engaged inside the groove 402.

[0035] A sleeve 6 is fixedly connected to the top end of the through hole 401. An air outlet 601 is provided at the bottom end of the sleeve 6. Several air inlets 602 are evenly provided on the surface of the sleeve 6. A second sealing ring 603 is fitted onto the top end of the sleeve 6.

[0036] The sleeve 6 has a valve core 7 slidably connected inside, the surface of the valve core 7 is fitted with a third sealing ring 8, and the top of the valve core 7 is fixedly connected with a valve stem 9.

[0037] A valve cover 10 is fixedly connected to the top of the valve body 1. Several fixing bolts 1001 are evenly inserted into the edge of the top of the valve cover 10. The other end of the fixing bolts 1001 is threadedly connected to the top of the valve body 1.

[0038] Support rods 11 are fixedly connected to the four corners of the top of the valve cover 10. A fixed seat 12 is fixedly connected to the top of the support rod 11. An electric mechanism 13 is fixedly connected to the top of the fixed seat 12. The output end of the electric mechanism 13 is fixedly connected to the top of the valve stem 9.

[0039] With the air inlet 602 set, the air inlet 602 is evenly opened on the surface of the sleeve 6 during use, and the air inlet 602 is in the shape of an inverted triangle. Then, the electric mechanism 13 drives the valve core 7 to slide inside the sleeve 6 through the valve stem 9, thereby achieving the effect of controlling the opening size of the air inlet 602, and thus achieving the effect of adjustable gas flow.

[0040] The specific solution is as follows: First, connect the inlet flange 2 and the outlet flange 3 to the inlet pipe and the outlet pipe respectively. Then, the gas enters the inlet chamber above the cavity chamber 101 through the inlet flange 2, and then enters the interior of the sleeve 6 through the inlet hole 602. The inlet holes 602 are evenly distributed on the surface of the sleeve 6 during use, and are in an inverted triangular shape. Then, the electric mechanism 13 drives the valve stem 9 to move the valve core 7 inside the sleeve 6, thereby controlling the opening size of the inlet holes 602. This achieves adjustable gas flow, and the gas enters the outlet chamber below the cavity chamber 101 through the outlet port 601, and finally exits through the outlet flange 3. With the sleeve 6 and valve core 7, the sleeve 6 is fixedly connected to the top of the partition 4 during use, and a first sealing ring 5 is provided at the connection between the partition 4 and the sleeve 6. A second sealing ring 603 is provided at the connection between the sleeve 6 and the valve cover 10. The valve core 7 is slidably connected inside the sleeve 6, and a third sealing ring 8 is fitted on the surface of the valve core 7, thereby achieving a better sealing effect.

[0041] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0042] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A low-pressure bypass regulating valve with good sealing performance, characterized in that, include: A valve body (1) is provided with a partition (4) in the middle of the valve body (1), a through hole (401) is provided in the middle of the partition (4), a sleeve (6) is provided in the middle of the through hole (401), a valve core (7) is provided inside the sleeve (6), a valve stem (9) is provided at the top of the valve core (7), a valve cover (10) is provided at the top of the valve body (1), a fixed seat (12) is provided at the top of the valve cover (10), and an electric mechanism (13) is provided at the top of the fixed seat (12).

2. The low-pressure bypass regulating valve with good sealing performance according to claim 1, characterized in that, An air inlet flange (2) is fixedly connected to one side of the valve body (1), and an air outlet flange (3) is fixedly connected to the other side of the valve body (1).

3. A low-pressure bypass regulating valve with good sealing performance according to claim 2, characterized in that, The valve body (1) has a cavity (101) in the middle, and a partition (4) is fixedly connected to the middle of the cavity (101). The partition (4) divides the cavity (101) into an air inlet chamber and an air outlet chamber in sequence.

4. A low-pressure bypass regulating valve with good sealing performance according to claim 3, characterized in that, The partition (4) has a through hole (401) in the middle, and a groove (402) is formed on the inner wall surface of the through hole (401). A first sealing ring (5) is engaged inside the groove (402).

5. A low-pressure bypass regulating valve with good sealing performance according to claim 4, characterized in that, A sleeve (6) is fixedly connected to the top end of the through hole (401). An air outlet (601) is provided at the bottom end of the sleeve (6). Several air inlets (602) are evenly provided on the surface of the sleeve (6). A second sealing ring (603) is fitted onto the top end of the sleeve (6).

6. A low-pressure bypass regulating valve with good sealing performance according to claim 5, characterized in that, The sleeve (6) is slidably connected to a valve core (7), a third sealing ring (8) is fitted on the surface of the valve core (7), and a valve stem (9) is fixedly connected to the top of the valve core (7).

7. A low-pressure bypass regulating valve with good sealing performance according to claim 6, characterized in that, A valve cover (10) is fixedly connected to the top of the valve body (1). Several fixing bolts (1001) are evenly inserted at the edge of the top of the valve cover (10). The other end of the fixing bolts (1001) is threadedly connected to the top of the valve body (1).

8. A low-pressure bypass regulating valve with good sealing performance according to claim 7, characterized in that, Support rods (11) are fixedly connected to the four corners of the top of the valve cover (10). A fixed seat (12) is fixedly connected to the top of the support rod (11). An electric mechanism (13) is fixedly connected to the top of the fixed seat (12). The output end of the electric mechanism (13) is fixedly connected to the top of the valve stem (9).

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