CN215258010U

CN215258010U - Ultrahigh pressure hydraulic control one-way valve

Info

Publication number: CN215258010U
Application number: CN202120795946.7U
Authority: CN
Inventors: 罗清蓉; 翁海登; 李文强; 郑奇
Original assignee: Ningbo Chuangli Hydraulic Technology Engineering Co ltd
Current assignee: Ningbo Chuangli Hydraulic Technology Engineering Co ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-12-21
Anticipated expiration: 2031-04-19

Abstract

The utility model discloses an ultrahigh pressure hydraulic control one-way valve, including the valve body and install preceding spiral shell lid and the back lid at the valve body both ends respectively, still install valve barrel and guide valve core in the valve body, the valve barrel cooperates with preceding spiral shell lid, guide valve core and back lid cooperation, install the cone valve core in the valve barrel, still be equipped with the inlet port on the valve body lateral wall, preceding spiral shell lid, valve barrel and back lid inside all are equipped with the shoulder hole, the promotion through the hydraulic oil of inlet port or guide valve core drives the cone valve core and removes along the valve barrel, can realize the switch on of inlet port and preceding spiral shell lid; the valve rod is arranged in a triangular shape with a circular arc cross section, the amount of hydraulic oil flowing into the limiting slide hole can be reduced to achieve use in a high-pressure environment of the valve, meanwhile, when the pressure of the valve is too high, the valve handle on the conical valve core is limited by the boss arranged on the front screw cap, the oil outlet and the oil inlet are continuously communicated through the sliding groove, and therefore the working pressure of the hydraulic control valve is improved.

Description

Ultrahigh pressure hydraulic control one-way valve

Technical Field

The utility model relates to a hydraulic component field especially relates to a superhigh pressure liquid accuse check valve.

Background

The hydraulic control one-way valve is a valve which can enable the one-way valve to reversely flow by controlling the pressure of fluid, and is different from a common one-way valve in that a control oil way is added.

When the existing hydraulic control one-way valve is used in a high-pressure environment, the existing hydraulic control one-way valve can be conducted only by connecting an additional joint at the position of an oil outlet, the assembly is complex, leakage points of media are increased, meanwhile, the reverse conduction in the high-pressure environment needs larger control pressure, and the application range is not wide.

Disclosure of Invention

The utility model discloses to the condition among the background art, provide a super high pressure liquid accuse check valve, structural design is simple to having set up high-pressure protection structure, having the assembly simple, the leakproofness is good, uses characteristics such as safe and reliable.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve: the utility model provides an ultrahigh pressure liquid accuse check valve, includes the valve body and installs respectively the preceding spiral shell lid and the back lid at valve body both ends, still install the valve barrel in the valve body and lead the case, the valve barrel with preceding spiral shell lid cooperation, lead the case with back lid cooperation, install the cone valve core in the valve barrel, still be equipped with the inlet port on the valve body lateral wall, preceding spiral shell lid the valve barrel with back lid inside all is equipped with the shoulder hole, through the hydraulic oil of inlet port or the promotion of leading the case drives the cone valve core is followed remove in the valve barrel, can realize the inlet port with switching on of preceding spiral shell lid.

Preferably, the valve body is internally hollow, internal thread hole sections are arranged at two ends of the valve body, the internal thread hole sections are respectively matched with the front screw cap and the rear cap, a limiting groove and a limiting sliding groove are further formed in the valve body respectively, the limiting groove is matched with the internal thread hole sections of the front screw cap, the limiting sliding groove is matched with the internal thread hole sections of the rear cap, the limiting groove is communicated with the internal thread hole sections of the rear cap through a guide hole, and the oil inlet hole penetrates through the side wall of the valve body and the guide hole.

Preferably, the valve sleeve is installed in the limiting groove, the valve sleeve is tightly matched with the limiting groove, a transition oil hole and a limiting slide hole are formed in the valve sleeve, the diameter of the transition oil hole is larger than that of the limiting slide hole, and the limiting slide hole can be respectively communicated with the oil inlet hole and the guide hole.

Preferably, the cone valve core comprises a valve handle, a frustum and a valve rod, the valve handle is located in the transition oil hole, one end of the frustum is fixedly connected with the valve handle, the other end of the frustum is fixedly connected with the valve rod, the cross section of the valve rod is triangular with an arc, the valve rod can slide along the limiting slide hole through the arc, a spring is mounted on the valve handle, one end of the spring is matched with the frustum, the other end of the spring is matched with the front screw cap, and when the frustum is matched with the limiting slide hole and the end face of the connection position of the transition oil hole, the limiting slide hole can be blocked from being communicated with the transition oil hole.

Preferably, the guide valve core is installed in the limiting sliding groove, the guide valve core is in sliding fit with the limiting sliding groove, a guide valve rod is fixed at one end of the guide valve core, the guide valve rod can slide along the guide hole, and the guide valve rod can also be matched with the valve rod.

Preferably, the inside connecting hole and the oil outlet that are equipped with the intercommunication of preceding spiral shell lid, preceding spiral shell lid outside comprises nut section and screw thread section, the nut section with be equipped with the seal groove between the screw thread section, the screw thread section terminal surface is equipped with the boss, be equipped with a plurality of crisscross logical grooves on the boss, lead to the groove with the oil outlet intercommunication, preceding spiral shell lid passes through the screw thread section with valve body one end the internal thread hole section is connected and is right the valve barrel is fixed, simultaneously through installing sealing washer in the seal groove seals.

Preferably, the inside control that is equipped with the intercommunication of back lid connects hole and accuse oilhole, the diameter of accuse oilhole is less than the control connects the hole diameter, back lid outside also comprises nut section and screw thread section, the nut section with also be equipped with the seal groove between the screw thread section, back lid passes through the screw thread section with the internal thread hole section of the valve body other end is connected and is right the guide valve core carries on spacingly, simultaneously through installing seal ring in the seal groove seals.

The utility model has the advantages that: the cross section of the valve rod on the cone valve core is set to be triangular with an arc triangular position, the high-pressure environment of the valve is used by reducing the amount of hydraulic oil flowing into the limiting sliding hole, meanwhile, when the pressure of the valve is too high, the boss arranged on the front screw cap can limit the valve handle on the cone valve core, meanwhile, the oil outlet and the oil inlet are continuously communicated through the sliding groove, so that the working pressure of the existing hydraulic control valve can be increased to 120MPa from 31.5MPa, the application range of the valve is greatly improved, meanwhile, the connecting hole is directly connected with an executing element by being arranged on the front screw cap, the sealing performance is effectively improved, the low-pressure reverse starting of the valve can be reduced to 0.05MPa from 0.5MPa through the small-diameter oil control hole on the rear cap.

Drawings

Fig. 1 is an explosion diagram of the structure of the present invention.

Fig. 2 is a sectional view of the present invention.

Fig. 3 is a schematic view of the internal structure of the valve body of the present invention.

Fig. 4 is a schematic view of the external structure of the front screw cap of the present invention.

Fig. 5 is a schematic view of the internal structure of the front screw cap of the present invention.

Fig. 6 is a schematic view of the cone valve core structure of the present invention.

Fig. 7 is a sectional view of the valve housing of the present invention.

Fig. 8 is a cross-sectional view of the rear cover of the present invention.

In the figure: the valve comprises a valve body 1, an oil inlet hole 101, a limiting groove 102, an internal thread hole section 103, a guide hole 104, a limiting sliding groove 105, a cone valve core 2, a valve handle 201, a frustum 202, a valve rod 203, a spring 3, a valve sleeve 4, a transition oil hole 401, a limiting sliding hole 402, a copper pad 5, a sealing ring 6, a front screw cover 7, a boss 701, a through groove 702, a connecting hole 703, an oil outlet hole 704, a guide valve core 8, a guide valve rod 801, a rear cover 9, a control connecting hole 901 and an oil control hole 902.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments described in the present disclosure, all other embodiments obtained by a person skilled in the art without creative efforts are within the scope of the present disclosure.

Embodiment is as shown in fig. 1 to 8, an ultrahigh pressure pilot operated check valve includes a valve body 1, and a front screw cap 7 and a rear cap 9 respectively installed at two ends of the valve body 1, a valve sleeve 4 and a pilot valve core 8 are further installed in the valve body 1, the valve sleeve 4 is matched with the front screw cap 7, the pilot valve core 8 is matched with the rear cap 9, a cone valve core 2 is installed in the valve sleeve 4, an oil inlet 101 is further arranged on a side wall of the valve body 1, stepped holes are formed in the front screw cap 7, the valve sleeve 4 and the rear cap 9, and the cone valve core 2 is driven by hydraulic oil of the oil inlet 101 or the pilot valve core 8 to move in the valve sleeve 4, so that the oil inlet 101 and the front screw cap 7 can be conducted.

The inside hollow structure that is of

valve body

1, 1 both ends of valve body all are equipped with internal thread hole section 103, internal thread hole section 103 respectively with preceding spiral shell lid 7 with back lid 9 cooperation, still be equipped with spacing groove 102 and spacing spout 105 in the valve body 1 respectively, spacing groove 102 has with the cooperation preceding spiral shell lid 7 internal thread hole section 103 intercommunication, spacing spout 105 has with the cooperation back lid 9 internal thread hole section 103 intercommunication, spacing groove 102 with communicate through guiding hole 104 between the spacing spout 105, inlet port 101 runs through 1 lateral wall of valve body with guiding hole 104 intercommunication.

The valve sleeve 4 is installed in the limiting groove 102, the valve sleeve 4 is tightly matched with the limiting groove 102, a transition oil hole 401 and a limiting slide hole 402 are arranged in the valve sleeve 4, the diameter of the transition oil hole 401 is larger than that of the limiting slide hole 402, and the limiting slide hole 402 can be respectively communicated with the oil inlet hole 101 and the guide hole 104.

The cone valve core 2 is composed of a valve handle 201, a frustum 202 and a valve rod 203, the valve handle 201 is located in the transition oil hole 401, one end of the frustum 202 is fixedly connected with the valve handle 201, the other end of the frustum 202 is fixedly connected with the valve rod 203, the cross section of the valve rod 203 is triangular, the triangular position is an arc, the valve rod 203 can slide along the limiting slide hole 402 through the arc, a spring 3 is mounted on the valve handle 201, one end of the spring 3 is matched with the frustum 202, the other end of the spring is matched with the front screw cap 7, and when the frustum 202 is matched with the end face of the connecting position of the limiting slide hole 402 and the transition oil hole 401, the communication between the limiting slide hole 402 and the transition oil hole 401 can be blocked.

The guide valve core 8 is installed in the limiting sliding groove 105, the guide valve core 8 is in sliding fit with the limiting sliding groove 105, a guide valve rod 801 is fixed at one end of the guide valve core 8, the guide valve rod 801 can slide along the guide hole 104, and the guide valve rod 801 can also be in fit with the valve rod 203.

Connecting hole 703 and oil outlet 704 that preceding spiral shell lid 7 is inside to be equipped with the intercommunication, preceding spiral shell lid 7 outside comprises nut section and screw thread section, the nut section with be equipped with the seal groove between the screw thread section, the screw thread section terminal surface is equipped with boss 701, be equipped with a plurality of crisscross logical grooves 702 on the boss 701, lead to the groove 702 with oil outlet 704 intercommunication, preceding spiral shell lid 7 passes through the screw thread section with 1 one end of valve body the internal thread section 103 is connected and is right valve barrel 4 is fixed, simultaneously through installing sealing washer 6 in the seal groove seals.

The inside control that is equipped with the intercommunication of back lid 9 connects hole 901 and accuse oil hole 90, back lid 9 outside also comprises nut section and screw thread section, the nut end with also be equipped with the seal groove between the screw thread section, back lid 9 pass through the screw thread section with the internal thread hole section 103 of the valve body 1 other end is connected and is spacing to guide valve core 8, simultaneously seal through installing sealing washer 6 in the seal groove.

The valve sleeve 4 and the front screw cover 7 can be connected through a copper gasket 5, and the soft metal of the copper gasket 5 can improve the sealing performance of the connection part.

The specific working process is as follows: the valve is in a closed state as shown in fig. 2, at this time, the conical table 202 and the limiting slide hole 402 are in a contact state under the action of the spring 3, the pilot valve core 8 is in an active state, the connecting hole 703 on the front screw cap 7 is connected with the executing element, the control connecting hole 901 on the rear cap 9 is connected with the control oil path, and the oil inlet hole 101 on the valve body 1 is connected with the oil inlet pipeline.

When the valve works in the forward direction, at the moment, hydraulic oil in an oil inlet pipeline enters the valve body 1 through the oil inlet hole 101, the gap between the valve rod 203 and the limiting slide hole 402 is in contact with the conical surface of the frustum 202, the cone valve core 2 is extruded by the pressure of the hydraulic oil to slide along the limiting slide hole 402 through the valve rod 203, so that the frustum 202 is in contact with the limiting slide hole 402, the spring 3 is compressed, the oil inlet hole 101 is communicated with the transition oil hole 401 and the oil outlet hole 704 on the front screw cap 7, then the actuator is driven to move, when the pressure of the hydraulic oil in the oil inlet hole 101 is too high, the cone valve core 2 moves to the limit position, the valve handle 201 is limited by the boss 701 on the front screw cap 7, but the oil outlet hole 704 is communicated with the transition oil hole 401 through the through groove 702 arranged on the boss 701, and normal operation of the actuator can be continuously ensured.

When the valve need carry out reverse work, a small amount of hydraulic oil is injected into to accuse oilhole 90 to accessible control oil circuit, thereby promote guide valve core 8 and slide along spacing spout 105, and then promote awl case 2 through guide valve pole 801 along guiding hole 104 and remove along spacing slide opening 402, thereby communicate oil outlet 704 and inlet port 101, hydraulic oil can flow to inlet port 101 from oil outlet 704 this moment, realize reverse work, through the accuse oilhole 90 that sets up less diameter, the reverse of valve switches on can be realized to the lower oil pressure of accessible.

Claims

1. The utility model provides an ultrahigh pressure pilot operated check valve, includes valve body (1) and installs respectively preceding spiral shell lid (7) and back lid (9) at valve body (1) both ends, its characterized in that: still install valve barrel (4) and guide valve core (8) in valve body (1), valve barrel (4) with preceding spiral shell lid (7) cooperation, guide valve core (8) with back lid (9) cooperation, install cone valve core (2) in valve barrel (4), still be equipped with inlet port (101) on valve body (1) lateral wall, preceding spiral shell lid (7) valve barrel (4) with back lid (9) inside all is equipped with the shoulder hole, through the hydraulic oil of inlet port (101) or the promotion of guide valve core (8) can drive cone valve core (2) are followed remove in valve barrel (4), realize inlet port (101) with the switching on of preceding spiral shell lid (7).

2. The ultrahigh pressure pilot operated check valve of claim 1 wherein: the novel valve is characterized in that the valve body (1) is internally of a hollow structure, internal thread hole sections (103) are arranged at two ends of the valve body (1), the internal thread hole sections (103) are respectively matched with the front screw cap (7) and the rear cap (9), limiting grooves (102) and limiting sliding grooves (105) are further arranged in the valve body (1), the limiting grooves (102) are matched with the front screw cap (7) and communicated with the internal thread hole sections (103), the limiting sliding grooves (105) are matched with the rear cap (9) and communicated with the internal thread hole sections (103), the limiting grooves (102) are communicated with the limiting sliding grooves (105) through guide holes (104), and the oil inlet hole (101) penetrates through the side wall of the valve body (1) and communicated with the guide holes (104).

3. The ultrahigh pressure pilot operated check valve of claim 2 wherein: the valve sleeve (4) is installed in the limiting groove (102), the valve sleeve (4) is tightly matched with the limiting groove (102), a transition oil hole (401) and a limiting slide hole (402) are formed in the valve sleeve (4), the diameter of the transition oil hole (401) is larger than that of the limiting slide hole (402), and the limiting slide hole (402) can be respectively communicated with the oil inlet hole (101) and the guide hole (104).

4. The ultrahigh pressure pilot operated check valve of claim 3 wherein: the cone valve core (2) consists of a valve handle (201), a frustum (202) and a valve rod (203), the valve handle (201) is positioned in the transition oil hole (401), one end of the frustum (202) is fixedly connected with the valve handle (201), the other end of the frustum is fixedly connected with the valve rod (203), the section of the valve rod (203) is triangular with the triangular position being an arc, the valve rod (203) can slide along the limiting slide hole (402) through the arc, a spring (3) is arranged on the valve handle (201), one end of the spring (3) is matched with the frustum (202), the other end of the spring (3) is matched with the front screw cap (7), when the frustum (202) is matched with the end surface of the connecting position of the limiting slide hole (402) and the transition oil hole (401), the communication between the limiting slide hole (402) and the transition oil hole (401) can be blocked.

5. The ultrahigh pressure pilot operated check valve of claim 4 wherein: the guide valve core (8) is installed in the limiting sliding groove (105), the guide valve core (8) is in sliding fit with the limiting sliding groove (105), a guide valve rod (801) is fixed at one end of the guide valve core (8), the guide valve rod (801) can slide along the guide hole (104), and the guide valve rod (801) can also be matched with the valve rod (203).

6. The ultrahigh pressure pilot operated check valve of claim 5 wherein: preceding spiral shell lid (7) inside connecting hole (703) and the oil outlet (704) that are equipped with the intercommunication, preceding spiral shell lid (7) outside comprises screw section and screw section, the screw section with be equipped with the seal groove between the screw section, the screw section terminal surface is equipped with boss (701), be equipped with a plurality of crisscross logical grooves (702) on boss (701), lead to groove (702) with oil outlet (704) intercommunication, preceding spiral shell lid (7) pass through the screw section with valve body (1) one end internal thread section (103) are connected and are right valve barrel (4) are fixed, simultaneously through installing sealing washer (6) in the seal groove seal.

7. The ultrahigh pressure pilot operated check valve of claim 6 wherein: the rear cover (9) is internally provided with a control connection hole (901) and an oil control hole (902) which are communicated, the outer part of the rear cover (9) is also composed of a nut section and a thread section, a sealing groove is also arranged between the nut section and the thread section, the rear cover (9) is connected with the inner thread hole section (103) at the other end of the valve body (1) through the thread section and limits the guide valve core (8), and meanwhile, the guide valve core is sealed through a sealing ring (6) arranged in the sealing groove.