Valve body structure with good sealing performance

Abstract

The utility model discloses a valve body structure with good sealing performance, which comprises a valve body shell, a water inlet valve opening part, a water outlet valve opening part, a valve rod adjusting part and a contact base plate, a connecting end seat is arranged at one end of the valve rod adjusting part, and an oil seal connecting cylinder section is arranged in the middle of one end of the connecting end seat. A fluororubber type oil seal connecting sleeve set is arranged in the oil seal connecting cylinder section, an annular oil seal belt groove is formed in a connecting node of the fluororubber type oil seal connecting sleeve set, a plurality of annularly-distributed protruding points are arranged at the annular oil seal belt groove, and a built-in sealing check ring is arranged at one end of the fluororubber type oil seal connecting sleeve set. The connecting end base is arranged at one end of the valve rod adjusting part to be connected with the oil seal connecting cylinder section, the fluorine rubber type oil seal connecting sleeve set, the annular oil seal belt groove, the protruding points and other structural parts are arranged, the good oil seal effect is achieved, the fluorine rubber type oil seal connecting sleeve set and the protruding points are filled and expanded under the injection of lubricating oil, and the sealing effect is good. The contact clearance with the valve rod is reduced, and good sealing performance is ensured.

Description

Technical Field

[0001] The utility model relates to a valve body structure with good sealing performance, belonging to the technical field of valve bodies. Background Art

[0002] The definition of "valve" is a device used to control the direction, pressure and flow of fluid in a fluid system. A valve is a device that allows the medium (liquid, gas, powder) in pipes and equipment to flow or stop and control its flow. The valve body is an important external part of the valve. In the existing technology, the valve body has the following disadvantages when used:

[0003] In the installation of the valve stem, the valve stem is only connected to the valve stem installation part of the valve body through a sealing ring, which does not have good sealing performance. In actual use, the valve body does not have a base structure, and cannot play a good supporting role at the node when laying the pipeline. For this reason, we design a valve body structure with good sealing performance. Utility Model Content

[0004] The purpose of the utility model is to provide a valve body structure with good sealing performance to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve body structure with good sealing performance, comprising a valve body shell, an inlet valve port, an outlet valve port, a valve stem adjusting portion and a contact base plate, the inlet valve port and the outlet valve port are respectively arranged at the inlet end and the outlet end of the valve cavity of the valve body shell, the valve stem adjusting portion is integrally arranged on one side of the outlet valve port, a connecting end seat is arranged at one end of the valve stem adjusting portion, an oil seal connecting cylinder section is arranged at the middle of one end of the connecting end seat, a fluororubber oil seal connecting sleeve is arranged inside the oil seal connecting sleeve, an annular oil seal belt groove is arranged at the connecting node of the fluororubber oil seal connecting sleeve, a plurality of annularly distributed protruding points are arranged at the annular oil seal belt groove, and a built-in sealing retaining ring is arranged at one end of the fluororubber oil seal connecting sleeve.

[0006] In the above-mentioned valve body structure with good sealing performance, an elastic connecting seat is fixedly provided on the top of the contact base plate, a valve body connecting pad is installed on the top of the elastic connecting seat, a rubber contact surface is provided on the top of the valve body connecting pad, and the rubber contact surface is fixedly provided on the bottom end of the valve body outer shell.

[0007] In the above-mentioned valve body structure with good sealing performance, a conical positioning protrusion is arranged on the inner side of the water inlet valve opening, and a sealing positioning ring is formed between the conical positioning protrusion and the inner cavity of the water inlet valve opening.

[0008] In the above-mentioned valve body structure with good sealing performance, a sealing groove is provided in the middle of the top end of the water outlet valve mouth, and two symmetrically distributed positioning connection columns are provided at the flange at the top end of the water outlet valve mouth.

[0009] In the above-mentioned valve body structure with good sealing performance, a pressure detection sealing seat is arranged at the top end of the valve stem adjusting portion, and a puncture sealing rubber plug is fixedly arranged inside the pressure detection sealing seat.

[0010] In the above-mentioned valve body structure with good sealing performance, the surface of the valve stem adjusting portion is provided with two reinforced connection protrusion strips which are integrally connected.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model provides a valve body structure with good sealing performance. By arranging a connecting end seat at one end of the valve stem adjusting part to connect the oil seal connecting cylinder section, and arranging structural parts such as a fluororubber oil seal connecting sleeve, an annular oil seal belt groove and a protruding point, the utility model has a good oil sealing effect. When the lubricating oil is injected, the fluororubber oil seal connecting sleeve and the protruding point are filled and expanded, and the contact gap with the valve stem is reduced to ensure good sealing performance. By arranging a valve body connecting pad, a contact base plate, an elastic connecting seat and a rubber contact surface, a good supporting effect can be played, so that the valve body shell has a good supporting node effect during the pipeline laying process, and at the same time a certain buffering performance is ensured to reduce the influence of external impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a valve body structure with good sealing performance of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of an oil seal connecting cylinder section of a valve body structure with good sealing performance according to the utility model;

[0015] Figure 3 This is a structural schematic diagram of a valve body structure with good sealing performance contacting a base plate of the utility model.

[0016] In the figure: 1. valve body shell; 2. water inlet valve mouth; 3. water outlet valve mouth; 4. valve stem adjustment part; 5. sealing positioning ring; 6. conical positioning protrusion; 7. sealing groove; 8. positioning connection column; 9. pressure detection sealing seat; 10. connecting end seat; 11. oil seal connecting cylinder section; 12. built-in sealing retaining ring; 13. fluororubber oil seal connecting kit; 14. annular oil seal with groove; 15. protrusion point; 16. strengthening connection protrusion strip; 17. valve body connection pad; 18. contact base plate; 19. elastic connecting seat; 20. rubber contact surface. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 The utility model provides a technical solution of a valve body structure with good sealing performance:

[0019] Embodiment 1: The valve body includes a valve body shell 1, an inlet valve mouth part 2, an outlet valve mouth part 3, a valve stem adjusting part 4 and a contact base plate 18, the inlet valve mouth part 2 and the outlet valve mouth part 3 are respectively arranged at the inlet end and the outlet end of the valve cavity of the valve body shell 1, the valve stem adjusting part 4 is integrally arranged on one side of the outlet valve mouth part 3, one end of the valve stem adjusting part 4 is provided with a connecting end seat 10, the middle part of one end of the connecting end seat 10 is provided with an oil seal connecting cylinder section 11, the interior of the oil seal connecting cylinder section 11 is provided with a fluororubber oil seal connecting sleeve 13, the connection node of the fluororubber oil seal connecting sleeve 13 is provided with an annular oil seal belt groove 14, the annular oil seal belt groove 14 is provided with a plurality of annularly distributed protrusions 15, and one end of the fluororubber oil seal connecting sleeve 13 is provided with a built-in sealing retaining ring 12.

[0020] In this embodiment, if Figure 3 As shown, in order to make the valve body shell 1 have a good supporting node effect during the pipeline laying process, while ensuring a certain buffering performance and reducing the influence of external impact force, an elastic connecting seat 19 is fixedly provided on the top of the contact base plate 18, and a valve body connecting pad 17 is installed on the top of the elastic connecting seat 19. A rubber contact surface 20 is provided on the top of the valve body connecting pad 17, and the rubber contact surface 20 is fixedly provided on the bottom end of the valve body shell 1.

[0021] In this embodiment, if Figure 1 As shown, in order to ensure the sealing of the water inlet connection, a conical positioning protrusion 6 is provided on the inner side of the water inlet valve mouth 2, and a sealing positioning ring 5 is formed between the conical positioning protrusion 6 and the inner cavity of the water inlet valve mouth 2.

[0022] In this embodiment, if Figure 1 As shown, in order to ensure the sealing effect and positioning installation accuracy of the water outlet part, a sealing groove 7 is provided in the middle of the top of the water outlet valve mouth 3, and two symmetrically distributed positioning connecting columns 8 are provided at the flange at the top of the water outlet valve mouth 3.

[0023] In this embodiment, if Figure 1As shown, in order to achieve a certain outlet pressure detection effect at the valve stem adjusting portion 4, a pressure detection sealing seat 9 is provided at the top of the valve stem adjusting portion 4, and a puncture sealing plug is fixedly provided inside the pressure detection sealing seat 9.

[0024] In this embodiment, if Figure 2 As shown, in order to ensure the strength and wear resistance of the valve stem adjusting portion 4, the surface of the valve stem adjusting portion 4 is provided with two integrally connected reinforcing protruding strips 16.

[0025] Working principle: the valve body of the utility model is composed of a valve body shell 1, a water inlet valve port 2, a water outlet valve port 3, a valve stem adjustment portion 4 and a contact base plate 18, wherein, Figure 1 As shown, the valve body shell 1, the water inlet valve port 2, the water outlet valve port 3, and the valve stem adjustment portion 4 are an integrated casting structure, which has good strength and assembly accuracy and ensures good sealing performance;

[0026] The utility model provides a connecting end seat 10 at one end of the valve stem adjusting part 4, an oil seal connecting cylinder section 11 is provided in the middle of one end of the connecting end seat 10, a fluororubber oil seal connecting sleeve 13 is provided inside the oil seal connecting sleeve 11, an annular oil seal belt groove 14 is provided at the connecting node of the fluororubber oil seal connecting sleeve 13, a plurality of annularly distributed protruding points 15 are provided at the annular oil seal belt groove 14, a built-in sealing retaining ring 12 is provided at one end of the fluororubber oil seal connecting sleeve 13, the fluororubber oil seal connecting sleeve 13 and the protruding points 15 are filled and expanded under the injection of lubricating oil, which has a good oil sealing effect, reduces the contact gap with the valve stem, and ensures good sealing performance; wherein, the lubricating oil is injected through the one-way oil hole on the oil seal connecting sleeve 11.

[0027] The bottom end of the valve body shell 1 is connected to the valve body connecting pad 17 through the rubber contact surface 20, and is connected to the contact base plate 18 through the elastic connecting seat 19 of the valve body connecting pad 17. This will enable the valve body shell 1 to have a good supporting node effect during the pipeline laying process, while ensuring a certain buffering effect and reducing the impact of external impact force.

[0028] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A valve body structure with good sealing performance, comprising a valve body shell (1), a water inlet valve opening (2), a water outlet valve opening (3), a valve stem adjustment portion (4) and a contact base plate (18), characterized in that: The water inlet valve opening (2) and the water outlet valve opening (3) are respectively arranged at the water inlet end and the water outlet end of the valve cavity of the valve body shell (1); the valve stem adjusting portion (4) is integrally arranged on one side of the water outlet valve opening (3); a connecting end seat (10) is arranged at one end of the valve stem adjusting portion (4); an oil seal connecting barrel section (11) is arranged at the middle of one end of the connecting end seat (10); a fluororubber oil seal connecting sleeve (13) is arranged inside the oil seal connecting barrel section (11); an annular oil seal belt groove (14) is arranged at the connecting node of the fluororubber oil seal connecting sleeve (13); a plurality of annularly distributed protruding points (15) are arranged at the annular oil seal belt groove (14); and a built-in sealing retaining ring (12) is arranged at one end of the fluororubber oil seal connecting sleeve (13).

2. A valve body structure with good sealing performance according to claim 1, characterized in that: An elastic connection seat (19) is fixedly provided at the top end of the contact base plate (18), a valve body connection pad (17) is installed at the top end of the elastic connection seat (19), a rubber contact surface (20) is provided at the top end of the valve body connection pad (17), and the rubber contact surface (20) is fixedly provided at the bottom end of the valve body housing (1).

3. A valve body structure with good sealing performance according to claim 1, characterized in that: A conical positioning protrusion (6) is provided on the inner side of the water inlet valve opening (2), and a sealing positioning ring (5) is formed between the conical positioning protrusion (6) and the inner cavity of the water inlet valve opening (2).

4. A valve body structure with good sealing performance according to claim 1, characterized in that: A sealing groove (7) is provided in the middle of the top end of the water outlet valve opening (3), and two symmetrically distributed positioning connection columns (8) are provided at the flange at the top end of the water outlet valve opening (3).

5. A valve body structure with good sealing performance according to claim 1, characterized in that: A pressure detection sealing seat (9) is arranged at the top end of the valve stem adjusting portion (4), and a puncture sealing rubber plug is fixedly arranged inside the pressure detection sealing seat (9).

6. A valve body structure with good sealing performance according to claim 1, characterized in that: The surface of the valve stem adjusting portion (4) is provided with two integrally connected reinforcing connection protruding strips (16).

Images