WO2017198103A1

WO2017198103A1 - T-shaped valve and combined reversing valve thereof

Info

Publication number: WO2017198103A1
Application number: PCT/CN2017/083881
Authority: WO
Inventors: 张未鸣
Original assignee: 张未鸣
Priority date: 2016-05-16
Filing date: 2017-05-11
Publication date: 2017-11-23
Also published as: CN105909827B; TW201741579A; CN105909827A; TWI640705B

Abstract

Disclosed is a T-shaped valve (1) consisting of a lower valve body (4), an upper valve body (5), a guide column (17), and an external force member (20). The T-shaped valve (1) and an auxiliary valve (2) can be combined to form a T-shaped valve type water inlet valve (3). Two T-shaped valves (1) can be combined to form a two-position reversing valve (34), four T-shaped valves (1) can be combined to form a T-shaped valve type three-position reversing valve (35) by means of logical combination, and four T-shaped valve type water inlet valves (3) can be combined to form a three-position reversing valve (36) by means of logical combination. The reversing valve can be converted into a reversing valve having pressure limiting and unloading functions by arranging the T-shaped valve (1) in a proper position of the reversing valve, a spring (15) and a handle being disposed at the end of a post channel (11). By changing the relative position relationship between the external force member (20) or a transaction member (38) and a post on the reversing valve, the circulation and the cut-off of a fluid medium in a pipeline and the flowing direction of the fluid medium in the pipeline can be changed, so that the reversing valve has different operating states. The T-shaped valve (1) and the T-shaped valve type water inlet valve (3) can also be separately used. The reversing valve has a simple structure and is free of internal leakage, the flowing direction of the fluid medium can be stably changed in the pipeline, median functions are complete, and the manufacturing process of the reversing valve does not need a high precision.

Description

T-valve and its combined reversing valve

Technical field

The invention relates to the field of valves, in particular to a T-shaped valve and a combined reversing valve thereof, comprising: a T-shaped valve, a T-shaped valve type water inlet valve, a two-position reversing valve, a T-shaped valve type three-position reversing valve, three The position reversing valve is used for controlling the opening and closing of the fluid medium in the pipeline, and controlling and changing the flow direction of the fluid medium in the pipeline.

Background technique

The reversing valve is an important category in the valve. Currently, the reversing valve on the market basically relies on the radial friction surface between the sealing ring on the shaft or the shaft to achieve the sealing effect. To achieve the sealing effect, High precision is required between the seal ring on the shaft or the shaft and the bushing. In order to reduce wear and deformation, the material selection is stricter, but it is still difficult to solve the problems of wear, internal leakage, high precision machining, etc. The problem is that the processing process is complicated and the processing cycle is long, so that the cost of the product is not easily reduced.

Summary of the invention

Therefore, the technical problem to be solved by the present invention is to provide a T-shaped valve which is less prone to internal leakage and which requires less processing precision. Another technical problem to be solved by the present invention is to provide a reversing valve composed of a T-shaped valve, or a T-shaped valve type inlet valve composed of a T-shaped valve and a sub-valve, or a T-shaped valve type water inlet valve. Directional valve. The T-shaped valve, or the T-shaped valve inlet valve, or the reversing valve are used to control the opening and closing of the fluid medium in the pipeline, and to control and change the flow direction of the fluid medium in the pipeline.

The technical solution of the present invention is:

A T-shaped valve includes: a lower valve body, an upper valve body,

The T-shaped valve further includes a guide post, and a chamber formed on the two sides of the valve body and having a sealing surface A and a sealing surface B after the lower valve body and the upper valve body are combined;

The lower valve body comprises an inlet pipe and a water dividing channel communicating with the inlet pipe, the sealing surface A is located at the water separation channel near the chamber end; the top end of the upper valve body forms a column road communicating with the outside, and the sealing surface B is located at the column pole Road close to the chamber The guide post is composed of two elongated columns and a column member with a middle protrusion. The two ends of the column member are matched with the sealing surface A and the sealing surface B in the chamber, and the axial length of the chamber is larger than the column member. The axial length is long, the radial width of the chamber is wider than the radial width of the column member, and the two ends of the column member can be respectively sealed with the sealing surface A or the sealing surface B in the chamber, and the guide post is placed at In the guide column formed by the water dividing channel, the chamber and the column road, one end of the column rod can protrude outside the column rail, and the guide column can move axially in the column, and the distance of the axial movement of the column is limited to The distance the column member on the column can move axially within the chamber.

The inlet pipe can accommodate the flow of a pressurized fluid medium.

Wherein, a blind cavity is arranged in the inlet pipe corresponding to the water dividing channel, and one end of the column in the water dividing channel of the guiding column can protrude from the water dividing channel and enter the blind cavity.

Wherein, in the blind cavity provided in the inlet pipe corresponding to the watershed, a spring which can be in contact with the pole entering the blind cavity is disposed, and the spring force direction of the spring points to the watershed.

Wherein, a drainage channel is arranged on a side of the T-shaped valve column. Wherein, an external force member may be disposed at a position corresponding to the column 柤 on the outer side of the top end of the upper valve body.

Wherein, the external force member is composed of a movable member composed of an eccentric wheel and an elastic pressing piece, and the plurality of different movable members constitute a different moving component, and the elastic pressing piece is disposed under the eccentric wheel, and is located at the eccentric wheel and protrudes from the column rod Between the poles; under the action of the eccentric wheel, the movable member or the movable member has three positions of left, middle and right relative to the column of the column end; when the external force on the T-shaped valve is eccentric and elastic When the sheet is composed, the vertical axis of the eccentric of the T-shaped valve external force member and the pole on the T-shaped valve may not be on one axis.

Another technical solution of the present invention is a two-position reversing valve, wherein the inlet pipes of the two T-shaped valves are connected, and the two ends of the connected inlet pipe are closed, and the inlet water pipe is provided with a water inlet to form Two-position reversing valve.

Another technical solution of the present invention is a T-valve three-position reversing valve, wherein one ends of the inlet pipes of the four T-shaped valves are respectively closed, and the inlet pipes on the two T-shaped valves are connected and connected. The water inlet is provided on the inlet pipe, and the water outlets on the other two T-shaped valves are respectively connected to the water outlets on the two T-shaped valves communicating with the inlet pipe to form a T-valve three-position reversing valve.

A T-shaped valve type water inlet valve, the T-shaped valve is connected with a sub-valve to form a T-shaped valve type water inlet valve, the auxiliary valve is composed of an inlet pipe, an outlet pipe, a separation port, a partition, an A room, and a B The chamber and the B channel are composed, and the partition member is located between the B chamber and the A chamber, so that the B chamber is connected to the A chamber without being connected, the B channel is located at one end of the B chamber, the inlet pipe is connected to the A chamber, and the partition is located in the A chamber and the outlet. Between the water pipes, the partitions correspond to the partitions and match each other. The partition and the partition member may be attached to each other or may be separated from each other. The partition member is movable between the A chamber and the B chamber, and the B passage on the B chamber communicates with the water outlet on the T-shaped valve, and the inlet on the auxiliary valve The water pipe is in communication with the inlet pipe on the T-valve.

Another technical solution of the present invention is a three-position reversing valve, four of the above-mentioned T-shaped valve type water inlet valves, wherein two inlet pipes on two T-shaped valve type inlet valves are connected, and the communication is connected. The water inlet is provided on the water pipe, and the outlet pipes on the two T-shaped valve inlet valves that communicate with the inlet pipe are respectively connected with the inlet pipes on the other two T-shaped valve inlet valves, and the two T-shaped valve inlets are connected. The outlet pipe of the valve and the inlet pipe of the other two T-shaped valve inlet valves are respectively provided with external interfaces to form a three-position reversing valve.

Wherein, when the external force component on the T-shaped valve is a spring, the water inlet pipe on the T-shaped valve of the external force component is arranged in series on the two inlet pipes connected to each other on the reversing valve.

The traditional two-position valve usually has a rotary radial seal two-position valve and a rotary axial seal two-position valve. The rotary two-position valve is sealed by the friction surface, so it is caused by friction. Resistance and wear.

The T-shaped valve of the present invention is also classified in the category of two-position valves. The sealing of the T-shaped valve 1 relies on the axial movement of the guide post 17 in the guide column chamber 16, so that the two ends on the column member and the two chambers in the chamber The sealing surfaces are alternately fitted to the seal to meet the working requirements of the two-position valve. Although the T-valve and the conventional two-position valve have the same working principle, the T-shaped valve works in the reversing direction due to the different structure from the rotary two-position valve. The friction problem is avoided during the process, and the resistance and wear caused by the friction are relatively slight during the operation of the T-shaped valve.

Wherein, the upper end of the T-shaped valve may be provided with a movable member composed of an eccentric wheel and an elastic pressing piece as an external force member. The movable member is only one of a plurality of external force members, and the eccentric on the movable member can be rotated to the left or right. The plurality of different moving parts constitute a different moving component, and the elastic pressing piece is disposed under the eccentric wheel, and is located between the eccentric wheel and the pole of the column traverse; under the action of the eccentric wheel, the movable member or the movable component is opposite to the column The pole has three stations: left, center and right.

The beneficial effects of the invention are:

The invention proposes a scheme for achieving a sealing effect between the shaft and the sleeve by using the joint surface between the axial directions. The sealing performance is good, the wear is small, and the requirement for the material is relatively flexible, and it is important to put a plurality of T a valve or a plurality of T-shaped valve inlet valves composed of a T-shaped valve and a secondary valve are combined into a reversing valve by a logical connection, wherein the external force member may be a movable member composed of an eccentric wheel and an elastic pressing piece, or a transactional component consisting of multiple actuators, or Other forms of external force members, under the action of the eccentric wheel, the movable member or the different movable assembly has three left, middle and right working positions for the pole of the pole, and under the action of the external force member or the movable member or the different moving component, The flow of the fluid medium in the reversing valve line and the flow direction of the fluid medium in the line can be varied. The structure of the reversing valve is relatively simple, there is no internal leakage, the fluid medium is stable when changing the flow direction in the pipeline, the middle position machine is relatively complete, and the manufacturing process of the reversing valve no longer requires too much precision, the material The choice also has greater flexibility, which can effectively improve product quality and reduce product cost.

Since the above valve is in operation, the seal is relied on the axial movement of the guide post in the guide column chamber, so that the two ends on the column member are alternately sealed with the two sealing faces in the chamber, and the structural principle is There is no internal leakage, no need for too high machining accuracy, and reduced resistance and wear due to friction.

Brief description of the drawing

Figure 1. Schematic diagram of the decomposition of a T-shaped valve with an external force member.

Figure 2 is a schematic view of a T-shaped valve with an external force member.

Figure 3 is a schematic view of a T-shaped valve with an external force member and a side of the column path provided with a drain.

Fig. 3A shows an external force member, and a blind cavity is arranged in the inlet pipe corresponding to the water dividing channel, and the one end of the column in the water dividing channel protrudes from the water dividing channel and enters the blind cavity.

FIG. 3B is a schematic view of a spring with an external force member disposed in a blind cavity corresponding to the watershed in the inlet pipe and in contact with the pole entering the blind cavity.

Figure 4 is a schematic view of a T-shaped valve type inlet valve composed of a T-shaped valve and a secondary valve with an external force member.

FIG. 5A is a schematic view showing the two water outlets on the two-position reversing valve with the external force member communicating with the working cylinder through the connecting pipe, the first eccentric A is located at the T position, and the second eccentric B is located at the S position.

FIG. 5B is a schematic view showing the two water outlets on the two-position reversing valve with the external force member communicating with the working cylinder through the connecting pipe, the first eccentric wheel A is located at the S position, and the second eccentric wheel B is located at the T position.

Figure 6. The inlet pipe on the T-valve with the spring as the external force member is placed in series on the T-valve three-position reversing valve with external force on the two connected inlet pipes, T-shaped valve C, T-shaped The one end of the inlet pipe of the valve D is connected to the working cylinder through the connecting pipe, and the third eccentric C and the fourth eccentric D are both located at the S position, and the first eccentric A and the second eccentric B are both located at the T position. schematic diagram.

6A, a T-valve three-position reversing valve with an external force member, a T-shaped valve C, and one end of the T-shaped valve D on the inlet of the inlet pipe is connected to the working cylinder through a connecting pipe, the first eccentric A, The second eccentric B, the third eccentric C, and the fourth eccentric D are all located at the T position, and the transaction component is in the middle station.

Fig. 6B shows a T-valve three-position reversing valve with an external force member, a T-shaped valve C, and one end of the T-shaped valve D on the inlet of the inlet pipe is connected to the working cylinder through a connecting pipe, and the first eccentric A is located The T position, the second eccentric B, the third eccentric C, and the fourth eccentric D are all located at the S position, and the transaction assembly is in the right position.

Fig. 6C, on the T-valve three-position reversing valve with external force member, the T-shaped valve C, the one end of the inlet pipe of the T-shaped valve D is connected to the working cylinder through the connecting pipe, and the second eccentric B is located The T position, the first eccentric A, the third eccentric C, and the fourth eccentric D are all located in the S position, and the transaction component is in the left station.

Figure 7. The inlet pipe on the T-valve with the spring as the external force member is placed in series on the two-way inlet pipe with the external force member on the two inlet pipes, and the two external ports on the three-way selector valve. The first eccentric A and the second eccentric B are both located in the S position, the third eccentric C, and the fourth eccentric D are located at the T position.

7A, the two outer interfaces on the three-position reversing valve with the external force member communicate with the working cylinder through the connecting pipe, the first eccentric A, the second eccentric B, the third eccentric C, and the fourth eccentric D The schematic diagram is located in the S position and the transaction component is in the middle station.

7B, the two outer interfaces on the three-position reversing valve with the external force member are connected to the working cylinder through the connecting pipe, and the first eccentric A and the fourth eccentric D are both located at the S position, and the second eccentric B, The three eccentric wheels C are all located in the T position, and the transaction component is located in the right working position.

Figure 7C, the two outer ports on the three-position reversing valve with the external force member are connected to the working cylinder through the connecting pipe, the second eccentric B and the third eccentric C are located at the S position, the first eccentric A, the first The four eccentric wheels D are all located at the T position, and the transaction component is located at the left station.

Fig. 8A is a schematic view of the sub-valve, and the separator in the sub-valve is a partition diaphragm.

Fig. 8B is a schematic view of the sub-valve, and the separator in the sub-valve is a partitioning piston.

Figure 9. Schematic diagram of the transactional component.

In the figure, 1, T-valve, 2, auxiliary valve, 3, T-valve inlet valve, 4, lower valve body, 5, upper valve body, 6, inlet pipe, 7, water dividing, 8, sealing surface A,9, sealing surface B,10, chamber, 11, column road, 12, drain, 13, water outlet, 14, piston, 15, spring, 16, guide column chamber, 17, guide column, 18, Column, 19, Pole, 20, external force, 21, working cylinder, 22, water inlet, 23, external interface, 24, connecting pipe, 25, outlet pipe, 26, partition, 27, partition, 28, room A, 29, Room B, 30, B channel, 31, blind cavity, 32, separation piston, 33, elastic diaphragm, 34, two-position reversing valve, 35, T-valve three-position reversing valve, 36, three-position reversing Valve, 37, elastic compression piece, 38, transaction piece, 39, transfer assembly, A, first eccentric wheel, B, second eccentric wheel, C, third eccentric wheel, D, fourth eccentric wheel.

detailed description

The name of the T-shaped valve, the lower valve body 4 and the upper valve body 5 are shaped like the letter T, so it is called a T-shaped valve.

The three-position reversing valve composed of the T-shaped valve 1 is called a T-valve three-position reversing valve 35.

The three-position reversing valve composed of the T-shaped valve type water inlet valve 3 is called a three-position reversing valve 36.

The T-shaped valve is composed of a lower valve body 4, an upper valve body 5, a guide post 17 and an external force member 20 (see Fig. 1, Fig. 2). The guide post 17 is matched by the two ends to the sealing surface A8 and the sealing surface B9. The column member 18 is composed of a column 19 at both ends of the column member. The column is disposed in the column chamber 16 composed of the water dividing channel 7, the chamber 10 and the column path 11, and the external force member 20 is disposed outside the column end and the column. The corresponding position of the rod, the side of the T-shaped valve column 11 can be provided with a drainage channel 12 (see Fig. 3), and the position of the T-shaped valve inlet pipe corresponding to the watershed can be set to a blind cavity (see Fig. 3A, blind cavity) A spring can also be placed inside (see Figure 3B).

The water channel 7 - a portion of the medium in the T-shaped valve inlet pipe 6 enters the passage of the chamber.

Outlet 13 - The passage of media from the chamber to another location or from another location into the chamber.

The mast path 11 - when the guide post moves in the guide column chamber, limits the range of radial movement of the post on the guide post within the mast passage, and is also the passage for the medium in the chamber to exit the T-valve.

Drainage channel 12—— Discharge the fluid medium in the chamber from the column channel to the diverting channel of the T-shaped valve, so that the fluid medium originally discharged through the column channel can be diverted to the drain channel, for example, a diversion tube is installed on the drainage channel. The fluid medium discharged from the drain can be discharged to the designated location.

The chamber 10 is a space defining an axial movable distance of the column. One end of the chamber is a sealing surface A, and the other end is a sealing surface B. The two sealing surfaces at both ends of the chamber are matched with the two ends of the column. The axial length of the chamber is longer than the axial length of the column member, and the radial width of the chamber is wider than the radial width of the column member.

The guide column chamber 16 - the guide column chamber is composed of a water dividing channel, a chamber and a column rail, and the guiding column can move axially in the guiding column chamber, and one end of the column on the guiding column can protrude outside the column rail, and the guiding column is The other end of the pole can stand out from the water Road, enter the blind cavity.

The blind cavity 31-see (see Figure 3A) blind cavity can be used to limit the radial range of motion into the blind cavity rod, making the column more stable during motion.

The role of the blind cavity and the inner cavity of the blind cavity

When the T-valve three-position reversing valve 35 is in operation, as shown in Fig. 6B, the T-shaped valve B, the eccentric on the T-shaped valve D is in the S position, and the guide post on the T-shaped valve D is not subjected to the spring. The force is not affected by the pressure of the medium in the inlet pipe, but is subjected to the pressure of the medium from the T-valve B outlet 13 into the T-valve D chamber 10, so that one end of the T-shaped valve D column member 18 Fitted with the sealing surface A, the spring disposed in the blind cavity 31, the spring force of the spring can overcome the force of the medium to the guide post, so that one end of the column member is separated from the sealing surface A8, and the other end of the column member and the sealing surface B9 is fitted. When the eccentric on the T-valve D is in the T position, one end of the T-shaped valve D column member is fitted to the sealing surface A, and the other end of the column member is separated from the sealing surface B (see Fig. 6A). As shown in Fig. 6C, the T-valve A and the eccentric on the T-valve C are in the S position, and the guide post on the T-shaped valve C is not subjected to the force of the spring and is not subjected to the pressure of the medium in the inlet pipe. The pressure from the T-valve A water outlet 13 into the T-valve C chamber 10 - the medium, the one end of the T-shaped valve C column member 18 is fitted to the sealing surface A, and the spring disposed in the blind cavity 31 is The spring force of the spring can overcome the force of the medium on the guide post, so that one end of the column member is separated from the sealing surface A8, and the other end of the column member is fitted with the sealing surface B9, when the eccentric wheel on the T-shaped valve C is in the T position. At the time, one end of the T-shaped valve C column member is fitted to the sealing surface A, and the other end of the column member is separated from the sealing surface B (see Fig. 6A). As shown in Fig. 6A, Fig. 6B, Fig. 6C, the T-shaped valve A, the blind cavity on the T-shaped valve B can enter the radial movement range of the blind cavity rod, so that the guide column can perform axial movement more stably, T The valve C and the trap chamber on the T-shaped valve D are provided with a spring, which can also enter the radial movement range of the blind cavity rod, so that the guide column can perform axial movement more stably.

The blind cavity with the spring installed (see Fig. 3B) is provided with a spring 15 which can be in contact with the pole entering the blind cavity, and the spring force direction of the spring points to the watershed when the corresponding eccentric wheel is located at S Position, the spring placed in the blind cavity, the spring force of the spring can overcome the force of the fluid medium on the column member, so that one end of the column member is separated from the sealing surface A, and the other end of the column member is fitted with the sealing surface B.

The auxiliary valve 2 - a sub valve mainly composed of an inlet pipe, an outlet pipe, a separation port, a partition member, an A chamber, a B chamber, and a B passage, can be combined with a T-shaped valve to form a T-shaped valve type inlet valve.

The movable component-one eccentric wheel and the elastic pressing piece constitute a movable member, and the eccentric wheel on the plurality of different movable members is connected by a cymbal shaft to become a different-moving component, because the eccentric wheels on the different-moving component have a mounting angle therebetween On The difference is that at the same time, the eccentric wheels on the different components pass through the elastic pressing piece, showing different mutual positional relations to the corresponding guiding columns, and the three positions represented by the different moving parts in three moments are called: left Station, medium station, right station. The actuator or the changer component (see Figure 9) is an external force component.

The external force member 20 is a heavy object, or a float ball, or a spring, or a motor, or an electromagnet, or an eccentric wheel, or a movable member, or a movable component, or a handle, or a manual operation, a lever, or the like, or two or two More than one external force piece is combined and used.

The eccentric wheel and the elastic pressing piece 37 can constitute a movable member 38, and the plurality of movable members 38 can constitute a movable member 39 (see FIG. 9). The elastic pressing piece is disposed under the eccentric wheel and is located at the eccentric wheel and the column end of the column end. Between the action of the eccentric wheel, the movable component has three left, middle and right positions relative to the pole of the pole. When the eccentric wheel on the movable component is rotated and squeezes the elastic pressing piece, the force is greater than the elastic force of the elastic pressing piece and the axial pressure of the fluid medium in the pipeline to the axial direction of the guiding column plus the elastic force of the spring in the blind cavity.

In the two-position reversing valve 34, the T-valve three-position reversing valve 35 and the three-position reversing valve 36, the movable member or the dissimilar component can be used as the external force member, or other forms of external force members can be used in different Under the condition of the reversing valve or different median requirements, it is necessary to change the geometry of the eccentric and change the position of the eccentric relative to the elastic pressing piece to adapt to the requirements of different reversing valves or different median functions. When the upper external force component is composed of the eccentric wheel and the elastic pressing piece, the vertical axis of the eccentric wheel of the T-shaped valve external force member and the pole on the T-shaped valve may not be on one axis.

The fluid medium in the T-shaped valve inlet pipe 6 has a certain pressure, and the pressure of the fluid medium in the direction of the column 19 is proportional to the pressure of the fluid medium in the inlet pipe, and the column rail 11 is added to the drainage channel 12 The cross-sectional area is proportional (see Figure 2, Figure 3). The column 17 is subjected to the pressure of the fluid medium, which is greater than the weight of the column and the frictional resistance between the column 19 and the column 11 when the column moves in the column chamber. The pressure of the fluid medium causes the column 18 to move toward The sealing surface B9 is such that one end of the column member is fitted to the sealing surface B. The direction of the force of the external force member on the T-shaped valve refers to the guiding column. The force of the selected external force member is greater than the pressure of the fluid medium to the direction of the column 17 in the direction of the column 19. The force of the external force member can move the column member toward the sealing surface. A, one end of the column member is fitted to the sealing surface A, and the other end of the column member is separated from the sealing surface B.

When the external force member is a movable member, the eccentric wheel on the movable member rotates, the eccentric wheel squeezes the elastic pressing piece on the movable member, the elastic pressing piece is connected with the column rod on the T-shaped valve, and the column member is moved toward the sealing surface A When one end of the column member is attached to the sealing surface A, and the other end of the column member is separated from the sealing surface B, the position where the eccentric wheel is located is called a T position, and when the external force member is The movable member rotates the eccentric on the movable member to cause the eccentric to leave the elastic pressing piece, the elastic pressing piece is separated from the column on the T-shaped valve, and the pressure of the fluid medium in the inlet pipe causes the column member to move toward the sealing surface B, and One end of the column member is fitted to the sealing surface B, and when the other end of the column member is separated from the sealing surface A, the position at which the eccentric wheel is located is referred to as the S position.

The working process of the T-shaped valve type inlet valve 3; the T-shaped valve type inlet valve 3 (see Fig. 4) is composed of the T-shaped valve 1 and the sub-valve 2 (see Fig. 8A, Fig. 8B), and the T-shaped valve type water inlet The partition member 27 on the valve 3 is matched with the partitioning port 26. The partitioning member 27 may be an elastic diaphragm 33 (see Fig. 8A) or a partitioning piston 32 (see Fig. 8B), and the partition member is movable in the chamber A and Between rooms B. The external force member is a movable member, and may be another type of external force member. When the eccentric wheel on the movable member is at the T position, the column member moves toward the sealing surface A, and one end of the column member is fitted to the sealing surface A, and the other end of the column member is attached. Separated from the sealing surface B, a part of the fluid medium in the B chamber 29 is discharged through the B channel 30, the water outlet 13, the chamber 10, and the drainage channel 12, and the fluid medium in the B chamber is depressurized, and the pressure in the B chamber is equivalent to the environmental pressure. The pressure in the chamber B is at a low level, and at the same time the pressure of the fluid medium with pressure in the inlet pipe is separated from the partitioning port 26, and the pressurized fluid medium in the inlet pipe flows through the A chamber 28 and the partition port 26 In the water pipe 25, the pressure in the chamber A is relative to the pressure in the chamber B, the pressure in the chamber A is at a high level, and the T-valve inlet valve is in an open state. When the eccentric on the movable member is at the S position, the pressure of the fluid medium in the inlet pipe causes the column member to move toward the sealing surface B, and one end of the column member is fitted to the sealing surface B, and the other end of the column member and the sealing surface A Separation, since one end of the column member is separated from the sealing surface A, a part of the fluid medium in the inlet pipe passes from the water dividing channel 7, the chamber 10, the water outlet 13, the B channel 30, and the chamber B, and the pressure in the chamber B is equivalent to the water inlet. The pressure inside the pipe, while the fluid medium in the inlet pipe flows from the inlet pipe 6, the A chamber 28, the separation port 26 to the outlet pipe 25, according to Bernoulli's theorem: the faster the flow rate, the lower the pressure, when the fluid medium is flowing, Therefore, the pressure at the partition is smaller than the pressure in the chamber B. Under the pressure difference, the partition matching the partition is brought close to the partition, and finally fits with the partition, because the partition is attached to the partition, the belt The pressurized fluid medium cannot flow from the inlet pipe to the outlet pipe through the separation port, the pressure in the outlet pipe is at a low level, the pressure in the outlet pipe is equivalent to the ambient pressure, and the partition member and the separation port are closely fitted under the pressure difference, and the T-valve type Inlet valve 3 is closed State. Generally speaking, when the eccentric wheel is located at the S position, one end of the column member of the T-shaped valve type water inlet valve is separated from the sealing surface A, and when the other end of the column member is fitted with the sealing surface B, the partition member is fitted to the partitioning port. The T-valve inlet valve is closed. When the eccentric is at the T position, one end of the upper part of the T-shaped valve inlet valve is fitted with the sealing surface A, and when the other end of the column is separated from the sealing surface B, the partition is separated from the separation port, and the T-shaped valve is inserted. The water valve is open.

Embodiment 1

Two-position reversing valve

For the convenience of description, the T-shaped valves corresponding to the first eccentric A and the second eccentric B are referred to as a T-valve A and a T-valve B.

(1) When the first eccentric A is at the T position and the second eccentric B is at the S position, the column of the T-valve A is close to the sealing surface A, and one end of the column is fitted to the sealing surface A, and the column is The other end is separated from the sealing surface B, the column member of the T-shaped valve B is close to the sealing surface B, one end of the column member is fitted to the sealing surface B, the other end of the column member is separated from the sealing surface A, and the fluid medium enters from the water inlet 22 The water pipe 6, the water dividing channel 7, the chamber 10, and the water outlet 13 of the T-shaped valve B enter the working cylinder 21 via the connecting pipe 24, and the piston 14 in the working cylinder moves, and the movement of the piston forces the fluid on the other side of the piston in the working cylinder. The medium enters the water outlet 13 of the T-valve A through the connecting pipe, and the chamber 10, and the fluid medium is discharged from the drain 12 to the T-shaped valve (see Fig. 5A).

(2) When the first eccentric A is at the S position and the second eccentric B is at the T position, the column of the T-valve A is close to the sealing surface B, and one end of the column is fitted to the sealing surface B, and the column is The other end is separated from the sealing surface A, the column member of the T-shaped valve B is close to the sealing surface A, one end of the column member is fitted to the sealing surface A, the other end of the column member is separated from the sealing surface B, and the fluid medium enters from the water inlet 22 The water pipe 6, the water dividing channel 7, the chamber 10, the water outlet 13 of the T-shaped valve A, enter the working cylinder 21 via the connecting pipe 24, move the piston 14 in the working cylinder, and the movement of the piston forces the fluid on the other side of the piston in the working cylinder. The medium enters the water outlet 13 of the T-shaped valve B through the connecting pipe, and the chamber 10, and the fluid medium is discharged from the drain 12 to the T-shaped valve (see Fig. 5B).

Embodiment 2

T-valve three-position reversing valve

For the convenience of description, the T-shaped valves corresponding to the first eccentric A, the second eccentric B, the third eccentric C, and the fourth eccentric D are referred to as T-valve A, T-valve B, T Valve C, T-valve D.

In this embodiment, a differentiating member composed of a movable member is used as the external force member, and other forms of external force members may be used.

(1) When the different moving component is in the middle working position, the first eccentric A, the second eccentric B, the third eccentric C, and the fourth eccentric D are all located at the T position, and the column members on the four T-shaped valves Each is close to the sealing surface A, and one end of the column member is respectively fitted to the corresponding sealing surface A, the fluid medium passages are all closed, and the piston in the working cylinder is locked (see Figure 6A).

(2) The shifting assembly turns to the right. When the shifting component is in the right working position, the first eccentric A is located at the T position, and the second eccentric B, the third eccentric C, and the fourth eccentric D are all located at the S position. The fluid medium enters the inlet pipe from the water inlet, the water dividing channel of the T-shaped valve B, the chamber, the water outlet, the water outlet entering the T-valve D, the chamber, the water dividing channel, the water inlet pipe, the connecting pipe, the working cylinder, and the working cylinder The piston moves inside, and the movement of the piston forces the fluid medium on the other side of the piston in the working cylinder to enter the inlet pipe, the water dividing channel, the chamber and the water outlet of the T-shaped valve C through the connecting pipe, and enters the water outlet and the chamber of the T-shaped valve A. From the drain, drain the fluid medium out of the T-valve (see Figure 6B).

(3), the transaction component is further turned to the left, when the transaction component returns to the middle station, the first eccentric A, the second eccentric B, the third eccentric C, and the fourth eccentric D are all located at the T position, four The column members on the T-shaped valves are all close to the sealing surface A, and one end of each of the column members is respectively matched with the corresponding sealing surface A, the fluid medium passages are all closed, the piston in the working cylinder is locked, and the piston in the working cylinder is closed. In other words, the movement stops, and the piston in the working cylinder stops at the position where the piston moves when the fluid medium passage is completely closed (see Fig. 6A).

(4), the transaction component is further turned to the left, when the transaction component is located at the left station, the second eccentric B is located at the T position, and the first eccentric A, the third eccentric C, and the fourth eccentric D are all located at the S position. The fluid medium enters the inlet pipe from the water inlet, enters the water outlet of the T-shaped valve A, the chamber, and the water outlet into the water outlet of the T-shaped valve C, the chamber, the water dividing channel, the water inlet pipe, and enters the working cylinder through the connecting pipe, so that The piston in the working cylinder moves, and the movement of the piston forces the fluid medium on the other side of the piston in the working cylinder to enter the water inlet pipe, the water dividing channel, the chamber and the water outlet of the T-shaped valve D through the connecting pipe, and enters the water outlet of the T-shaped valve B, The chamber then discharges the fluid medium from the drain to the T-valve (see Figure 6C).

(5), the transaction component turns to the right again, when the transaction component returns to the middle station, the first eccentric A, the second eccentric B, the third eccentric C, and the fourth eccentric D return to the T position. The column members on the four T-shaped valves are all close to the sealing surface A, and one end of the column member is respectively matched with the corresponding sealing surface A, the fluid medium passages are all closed, the piston in the working cylinder is locked, and the working cylinder is inside. The piston also stops moving, and the piston 14 in the working cylinder stops at the position where the piston moves when the fluid medium passage is completely closed (see Fig. 6A).

Embodiment 3

Three-position reversing valve

For the convenience of description, the first eccentric A, the second eccentric B, the third eccentric C, and the fourth eccentric The T-shaped valve type inlet valve corresponding to the wheel D is called the T-shaped valve type inlet valve A, the T-shaped valve type inlet valve B, the T-shaped valve type inlet valve C, and the T-shaped valve type inlet valve D. .

(1) When the transaction component is in the middle station, the first eccentric A, the second eccentric B, the third eccentric C, and the fourth eccentric D are all in the S position, and the four T-shaped valve inlet valves One end of the upper column member of the T-shaped valve is separated from the corresponding sealing surface A, and the other end of the column member is respectively fitted with the corresponding sealing surface B. The partitioning members on the four T-shaped valve type inlet valves are respectively attached to the partitioning opening. The fluid medium passages are all closed and the piston in the working cylinder is locked (see Figure 7A).

(2) The shifting component turns to the left. When the shifting component is in the left station, the first eccentric A and the fourth eccentric D are both in the S position, and the second eccentric B and the third eccentric C are both in the T position. The fluid medium enters the inlet pipe from the water inlet, the inlet pipe from the T-shaped valve inlet valve B, the A chamber, the separation port, the outlet pipe, the inlet port 23, the connecting pipe, and the working cylinder, so that the piston in the working cylinder moves The movement of the piston forces the fluid medium on the other side of the piston in the working cylinder to enter the inlet pipe, the A chamber, the separation port of the T-shaped valve inlet valve C through the connecting pipe and the outer port 23, and then discharges from the outlet pipe (see Fig. 7B). .

(3) The shifting assembly turns to the right. When the movable member returns to the neutral position, the first eccentric A, the second eccentric B, the third eccentric C, and the fourth eccentric D are all in the S position, four T-valve type inlet valve T-valve one end of the upper column member is separated from the corresponding sealing surface A, and the other end of the column member is respectively fitted with the corresponding sealing surface B, and the four T-shaped valve type inlet valves are The partitions are respectively attached to the partitions, the fluid medium passages are all closed, the pistons in the working cylinder are locked, the pistons in the working cylinders are stopped, the pistons in the working cylinders are stopped, and when the fluid medium passages are all closed, the pistons are closed. The position to move to (see Figure 7A).

(4) The transfer component is further turned to the right. When the transaction component is located at the right station, the second eccentric B and the third eccentric C are both in the S position, and the first eccentric A and the fourth eccentric D are both in the T Position, the fluid medium enters the inlet pipe from the water inlet, from the inlet pipe of the T-valve inlet valve A, the A chamber, the separation port, the outlet pipe, the inlet port, the connecting pipe, the working cylinder, and the piston in the working cylinder moves. The movement of the piston forces the fluid medium on the other side of the piston in the working cylinder to pass through the connecting pipe, the outer port, the inlet pipe of the T-shaped valve type inlet valve D, the A chamber, the separation port, and then discharged from the outlet pipe (see Fig. 7C). .

(5), the transaction component turns to the left again, when the transaction component returns to the middle station, the first eccentric A, the first The second eccentric B, the third eccentric C, and the fourth eccentric D are returned to the S position, and the four end portions of the upper T-valve of the four T-shaped valve inlet valves are respectively separated from the corresponding sealing faces A, and the column members are separated. The other ends of the two are respectively matched with the corresponding sealing faces B. The partitions on the four T-shaped valve inlet valves are respectively matched with the partitions, the fluid medium passages are all closed, the pistons in the working cylinders are locked, and the working cylinders are closed. The piston also stops moving, and the piston in the working cylinder stops at the position where the piston moves when the fluid medium passage is completely closed (see Fig. 7A).

Embodiment 4

For the convenience of description, the T-valve type inlet valve corresponding to the first eccentric A, the second eccentric B, the third eccentric C, and the fourth eccentric D is referred to as a T-valve type inlet valve. A, T-shaped valve type inlet valve B, T-shaped valve type inlet valve C, T-shaped valve type inlet valve D, or the corresponding T-shaped valve is called T-shaped valve A, T-shaped valve B, T Valve C, T-valve D.

The inlet pipe on the T-shaped valve using the spring 15 as the external force member is arranged in series on the inlet pipe of the two-way directional control valve or the three-position directional control valve or the three-way directional control valve on the two inlet pipes (see Figure 6, Figure 7), the T-shaped valve with the spring as the external force member, the spring set by the column rod, the spring direction refers to the guide column, and the spring force of the rod end spring is equivalent to the guide column being received by the inlet pipe in the direction of the column. The upper limit of the pressure set by the fluid medium. When the pressure of the fluid medium in the inlet pipe exceeds the upper limit of the set pressure, the fluid medium exceeding the upper limit of the set pressure overcomes the spring force of the spring against the column and pushes the column on the T-valve. , one end of the column member is separated from the sealing surface A, and the fluid medium exceeding the upper limit of the set pressure in the inlet pipe passes through the water dividing channel and the chamber of the T-shaped valve using the spring as the external force member, and is discharged from the water outlet to make the reversing valve Limited pressure function. For example, if a handle is added to the T-shaped spool end of the T-shaped valve through the spring as the external force member, the T-shaped valve can be manually operated. When the end of the column member is separated from the sealing surface A by manual operation, the fluid medium in the inlet pipe is used. The spring as the water dividing channel and the chamber of the T-shaped valve of the external force member is discharged from the water outlet, so that the reversing valve has the function of slamming.

When the eccentric and the rods on the T-shaped valve are in different relative positions with each other, the reversing valve will produce different median functions, such as in the T-valve three-position reversing valve 35, when the external force member is eccentric When the wheel, the first eccentric wheel A and the second eccentric wheel B are both in the T position, when the third eccentric wheel C and the fourth eccentric wheel D are both in the S position, the fluid medium at both ends of the piston in the working cylinder can pass through the connecting pipe, T-valve C or T-valve D inlet pipe, water diversion, chamber, water outlet, water passage through adjacent T-valve, chamber, drain, inlet and outlet cylinder, T-valve three The piston in the reversing valve cylinder is in a floating state (see Figure 6).

For example, in the three-way reversing valve 36, when the external force member is a movable member, the first eccentric A and the second eccentric B are both in the S position, and the third eccentric C and the fourth eccentric D are both in the T position. The fluid medium at both ends of the piston in the working cylinder can be respectively passed through the connecting pipe, the outer port, the T-shaped valve type inlet valve C or the T-shaped valve type inlet valve D inlet pipe, the A chamber, the separation port, the outlet pipe, the inlet, Out of the working cylinder, the piston in the three-way reversing valve working cylinder is in a floating state (see Figure 7).

T-valve and T-valve inlet valve can also be used separately.

Of course T-valve, or T-valve inlet valve, or T-valve and T-valve, or T-valve and T-valve inlet valve, or T-valve inlet valve and T-valve The water valves may also be combined with one another for a variety of different uses, as long as the structural members do not depart from the scope of the invention.

The invention proposes a scheme for achieving a sealing effect between the shaft and the sleeve by using the joint surface between the axial directions. The sealing performance is good, the wear is small, and the requirement for the material is relatively flexible, and it is important to put a plurality of T The shape valve or a plurality of T-shaped valve type water inlet valves composed of a T-shaped valve and a sub-valve form a reversing valve through a logical connection, and the reversing valve composed of a T-shaped valve does not require precise machining and no internal leakage. The friction resistance is small, and the choice of materials also has greater flexibility, which can effectively improve product quality and reduce product cost.

Claims

A T-shaped valve includes: a lower valve body and an upper valve body, characterized in that:

The T-shaped valve further includes a guide post, and a chamber formed on the two sides of the valve body and having a sealing surface A and a sealing surface B after the lower valve body and the upper valve body are combined;

The lower valve body comprises an inlet pipe and a water dividing channel communicating with the inlet pipe, the sealing surface A is located at the water separation channel near the chamber end; the top end of the upper valve body forms a column road communicating with the outside, and the sealing surface B is located at the column pole The passage is close to the end of the chamber, and the guide post is composed of two elongated columns and a column member with an intermediate protrusion. The two ends of the column are matched with the sealing surface A and the sealing surface B in the chamber, and the chamber is axially The length is longer than the axial length of the column member, and the radial width of the chamber is wider than the radial width of the column member, and the two ends of the column member can be respectively sealed and sealed with the sealing surface A or the sealing surface B in the chamber. The guide column is placed in the guide column chamber formed by the water dividing channel, the chamber and the column rail. One end of the column rod can protrude outside the column rail, and the guide column can move axially in the guide column chamber, and the guide column moves axially. The distance by which the column member bounded on the guide post is axially movable within the chamber.
A T-shaped valve according to claim 1, wherein a blind cavity is arranged in the inlet pipe corresponding to the water dividing passage, and one end of the column in the water dividing channel of the guiding column can protrude from the water dividing channel to enter Inside the blind cavity.
A T-shaped valve according to claim 1, wherein a spring that is in contact with the pole that enters the blind cavity is disposed in the blind cavity disposed in the inlet pipe corresponding to the watershed. The spring direction of the spring points to the water channel.
A T-shaped valve according to claim 1, wherein a drain passage is provided at a side of the T-shaped spool passage; and an outer side of the upper shaft of the upper valve body corresponds to the mast 柤The position is set with an external force piece.
A T-shaped valve according to claim 4, wherein the external force member is composed of a movable member composed of an eccentric wheel and an elastic pressing piece, and the plurality of different movable members constitute a movable member, which is elastic. The pressing piece is disposed under the eccentric wheel, and is located between the eccentric wheel and the column rod protruding from the column rod; under the action of the eccentric wheel, the movable member or the movable member has left and middle with respect to the column rod at the end of the column end The right three stations; when the external force on the T-shaped valve is composed of the eccentric wheel and the elastic pressing piece, the vertical axis of the eccentric wheel of the T-shaped valve external force member and the column on the T-shaped valve may not be in one axis on.
A two-position reversing valve is characterized in that: the inlet pipes of the two T-shaped valves according to claim 1 are connected, and the two ends of the connected inlet pipe are closed, and the inlet pipe is connected with a water inlet to form two Position reversing valve.
A T-valve three-position directional control valve, characterized in that: one end of the inlet pipe of the four T-shaped valve of claim 1 is closed, and the inlet pipes of the two T-shaped valves are connected, and the communication is continuous. The water inlet is provided on the water pipe, and the water outlets on the other two T-shaped valves are respectively connected to the water outlets on the two T-shaped valves that communicate with the water inlet pipe to form a T-valve three-position reversing valve.
A T-shaped valve type water inlet valve, characterized in that: the T-shaped valve according to claim 1 is connected with a sub-valve to form a T-shaped valve type inlet valve, and the sub-valve is separated by an inlet pipe, an outlet pipe, and a The mouth, the partition, the A chamber, the B chamber, the B channel are composed, the partition is located between the B chamber and the A chamber, so that the B chamber is connected to the A chamber without being connected, the B channel is located at the B chamber end, and the inlet pipe is connected to the A chamber. The outlet pipe is connected to the partition, and the partition is located between the chamber A and the outlet pipe. The partition corresponds to the partition and matches each other. The partition and the partition can be attached to each other, and can be separated from each other, and the partition can be movable. Between chamber A and chamber B, the B channel on chamber B is in communication with the water outlet on the T-valve, and the inlet pipe on the secondary valve is in communication with the inlet pipe on the T-valve.
A three-position reversing valve, characterized in that: four T-valve type inlet valves according to claim 8, wherein two inlet pipes on two T-shaped valve-type inlet valves are connected, and the inlet water pipes are connected The outlet pipes on the two T-shaped valve inlet valves that are connected to the inlet and the inlet pipe are respectively connected with the inlet pipes of the other two T-shaped valve inlet valves, and the two T-shaped valve inlet valves The outlet pipe is connected with the inlet pipes of the other two T-shaped valve inlet valves, and each has an external interface to form a three-position reversing valve.
A reversing valve according to any one of claims 6, 7 or 9, characterized in that: T-shaped The external force member on the valve is a spring, and the inlet pipe on the T-shaped valve whose external force is a spring is arranged in series on the two inlet pipes connected to each other on the reversing valve.