TWI640705B - T-shaped valve and reversing valve using the same - Google Patents

Abstract

The invention provides a T-shaped valve composed of a lower valve body, an upper valve body, a guide column and an external force component. The T-shaped valve can be combined with the auxiliary valve into a T-shaped valve type inlet valve, and the two T-shaped valves can be combined into two. Position reversing valve, four T-shaped valves are logically combined, can be combined into a T-valve three-position reversing valve, four T-shaped valve-type inlet valves are logically combined, can be combined into a three-position reversing valve, The T-shaped valve with the spring and the handle at the end of the column is placed at the appropriate position of the reversing valve, so that the reversing valve can be a reversing valve with limited pressure and load function, and the external force or the movable member is changed on the reversing valve. The relative positional relationship of the poles will change the flow and shutoff of the fluid medium in the pipeline, and change the flow direction of the fluid medium in the pipeline, so that the reversing valve produces different working states.

Description

T-valve and its combined reversing valve

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, and a T-valve three-position change. The valve, a three-position reversing valve, is used to control the flow, shut-off, and control of the fluid medium in the pipeline, and to change the flow direction of the fluid medium in the pipeline.

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 requirements of wear, internal leakage and high precision machining. The problem is that the processing process is complicated and the processing time is long, so that the cost of the product is not easily reduced.

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. of Directional valve. The T-shaped valve, or the T-shaped valve inlet valve, or the reversing valve are used to control the circulation, shut-off and control of the fluid medium in the pipeline, and change the flow direction of the fluid medium in the pipeline.

A T-shaped valve according to the technical solution of the present invention includes: a lower valve body and an upper valve body; the T-shaped valve further includes a guide post, and the lower valve body and the upper valve body are combined and formed on both sides of the valve body a first sealing surface, a first chamber of the second sealing surface; the lower valve body comprises an inlet pipe, and a water dividing passage communicating with the inlet pipe, the first sealing surface being located at the water dividing channel adjacent to the first chamber end; The top end of the valve body forms a column passage communicating with the outside, and the second sealing surface is located at the end of the column passage adjacent to the first chamber. The guide post is composed of two elongated columns and a column member with an intermediate protrusion, the column member The two ends of the first chamber are matched with the first sealing surface and the second sealing surface in the first chamber, the length of the axial direction of the first chamber is longer than the length of the axial direction of the column, and the width of the first chamber is larger than the diameter of the column. The width of the direction is wide, and the two ends of the column member can be respectively sealed with the first sealing surface or the second sealing surface in the first chamber, and the guiding column is disposed in the water dividing passage, the first chamber and the column passage In the formed guide column chamber, one end of the pole can protrude outside the pole passage, and the guide pillar can be inside the guide pillar Axial movement, the axial movement distance of the guide post is limited to the column member guide post in the first chamber from moving axially.

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

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 protrudes from the water dividing channel and enters the blind cavity.

Wherein, in the blind cavity provided in the inlet pipe corresponding to the water dividing channel, a spring is provided which can contact the pole entering the blind cavity, and the spring direction of the spring points to the water dividing channel.

Wherein, a drainage channel is arranged at a side of the T-shaped valve stem passage. its Wherein, an external force member may be disposed at a position corresponding to the column outside 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 movable parts 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 passage 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 of the column; 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 two inlet pipes of the above-mentioned T-shaped valves are connected, and both ends of the connected inlet pipe are closed, and the inlet pipe is connected with a water inlet, and 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 the communication is continuous. The water inlet is arranged on the water pipe, and the water outlet passages on the other two T-shaped valves are respectively connected with the water outlet passages on the two T-shaped valves communicating with the water inlet pipe to form a T-shaped valve type 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 member, a second chamber, The third chamber, the B channel (ie, the communication pipe) is composed, the partition is located between the third chamber and the second chamber, so that the third chamber is connected to the second chamber without being connected, and the B channel is located at the third At one end of the chamber, the inlet pipe is connected to the second chamber, and the partition is located between the second chamber and the outlet pipe. The partitions correspond to the partitions and match each other, and the partitions and the partitions can be attached to each other. Separated from each other, the partition is movable between the second chamber and the third chamber, and the B channel and the T-shaped valve on the third chamber The water outlet passage is connected, and the inlet pipe on the auxiliary valve is in communication with the inlet pipe on the T-shaped valve. In an embodiment, the B channel is a communication conduit between the third chamber and the water outlet.

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 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 provided with an external interface at a position communicating with the inlet pipes of the other two T-shaped valve inlet valves, and constitutes a three-position (ie, three-position) reversing valve.

Wherein, when the external force component on the lower valve is a spring, the inlet pipe on the T-valve of the external force component is arranged in series on the two inlet pipes of 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-valve of the present invention is also classified in the category of two-position valves. The sealing of the T-valve 1 relies on the axial movement of the guide post 17 in the guide post chamber 16, so that the two ends of the post are in the first chamber. The two sealing faces alternately seal to meet the working requirements of the two-position valve. Although the T-valve works the same as the conventional two-position valve, the T-valve is replaced due to the different structure from the rotary two-position valve. The friction problem is avoided during the working process, so that the resistance and wear caused by the friction are relatively slight during the working process 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. A plurality of different moving parts constitute a different moving component, and the elastic pressing piece is set It is placed under the eccentric wheel and is located between the eccentric wheel and the pole of the pole channel. Under the action of the eccentric wheel, the movable member or the movable component has three left, middle and right positions relative to the pole of the pole channel. Bit.

The invention has the beneficial effects that the invention proposes a scheme for achieving a sealing effect between the shaft and the sleeve with the joint surface between the axial directions, and the sealing performance is good, the wear is small, and the requirement for the material is relatively flexible. It is important to combine a plurality of T-shaped valves or a plurality of T-shaped valve inlet valves composed of a T-shaped valve and a secondary valve into a reversing valve through a logical connection, wherein the external force member can be an eccentric wheel and an elastic pressure A moving member composed of a piece, or a moving component composed of a plurality of different moving parts, or other forms of external force members, under the action of an eccentric wheel, the movable member or the different moving member has left, center and right for the pole of the pole channel The three stations can be circulated, shut off, and flow direction of the fluid medium in the pipeline of the reversing valve under the action of external force or different moving parts or different moving components. 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 the working process, the sealing is relied on the axial movement of the guide column in the guide column chamber, so that the two ends on the column member are alternately sealed with the two sealing faces in the first chamber, and the structural principle thereof is completed. It has no internal leakage, does not require too high machining accuracy, and reduces the resistance and wear caused by friction.

1‧‧‧T-valve

2‧‧‧Separate valve

3‧‧‧T-valve type inlet valve

4‧‧‧ Lower valve body

5‧‧‧Upper valve body

6‧‧‧ water inlet

7‧‧‧Water channel

8‧‧‧First sealing surface

9‧‧‧Second sealing surface

10‧‧‧ first chamber

11‧‧‧ pole passage

12‧‧‧Drainage channel

13‧‧‧Water outlet

14‧‧‧Piston

15‧‧‧ Spring

16‧‧ ‧ lead column room

17‧‧‧ Guide column

18‧‧‧column

19‧‧‧ pole

20‧‧‧External parts

21‧‧‧Working cylinder

22‧‧‧ water inlet

23‧‧‧ External interface

24‧‧‧Connecting tube

25‧‧‧Outlet

26‧‧‧Division

27‧‧‧Parts

28‧‧‧Second chamber

29‧‧‧ third chamber

30‧‧‧Connected pipes

31‧‧‧ blind cavity

32‧‧‧Separate piston

33‧‧‧Elastic diaphragm

34‧‧‧Two-position reversing valve

35‧‧‧T-valve three-position reversing valve

36‧‧‧Three-position reversing valve

37‧‧‧Elastic compression tablets

38‧‧‧Transitive parts

39‧‧‧Transitive components

A‧‧‧First eccentric

B‧‧‧Second eccentric

C‧‧‧third eccentric

D‧‧‧Four eccentric

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below: 1 is an exploded perspective view of a T-shaped valve having an external force member according to an embodiment of the present invention.

2 is a schematic view of a T-shaped valve having an external force member in an embodiment of the present invention.

3 is a schematic view showing a T-shaped valve having an external force member and a drain passage provided on a side of the pole passage in the embodiment of the present invention.

FIG. 3A illustrates an embodiment of the present invention having an external force member, wherein a blind cavity is disposed in a position corresponding to the water dividing passage in the inlet pipe, and one end of the column in the water dividing passage of the guiding column protrudes from the water dividing passage and enters the blind cavity. Schematic inside.

FIG. 3B is a schematic view showing a spring having an external force member disposed in a position corresponding to a water dividing passage in the inlet pipe, and a spring disposed in contact with the pole entering the blind cavity.

4 is a schematic view showing a T-shaped valve type water inlet valve composed of a T-shaped valve and a secondary valve having an external force member according to an embodiment of the present invention.

FIG. 5A illustrates two water outlet passages on a two-position reversing valve having an external force member according to an embodiment of the present invention, which is connected to the working cylinder through a connecting pipe, the first eccentric A is located at the T position, and the second eccentric B is located at the S position. Schematic diagram.

FIG. 5B illustrates two water outlet passages on a two-position reversing valve having an external force member according to an embodiment of the present invention, which is connected to the working cylinder through a connecting pipe, the first eccentric A is located at the S position, and the second eccentric B is located at the T position. Schematic diagram.

6 is a diagram showing an inlet pipe on a T-shaped valve using a spring as an external force member in series according to an embodiment of the present invention, and a T-shaped valve type three-position directional control valve having an external force member is connected to two connected inlet pipes, 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 third eccentric C and the fourth eccentric D are all located at the S position, the first eccentric A and the second eccentric A schematic diagram of B located at the T position.

6A illustrates a T-valve three-position reversing valve having an external force member in the embodiment of the present invention. The T-shaped valve C and the one end of the inlet pipe of the T-shaped valve D are respectively connected to the working cylinder through the 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 movable component is in a middle position.

6B illustrates a T-valve three-position reversing valve having an external force member according to an embodiment of the present invention. The T-shaped valve C and the one end of the inlet pipe of the T-shaped valve D are respectively connected to the working cylinder through the connecting pipe. The first eccentric A is located at the T position, the second eccentric B, the third eccentric C, and the fourth eccentric D are both located at the S position, and the transaction assembly is in the right position.

6C illustrates a T-shaped valve type three-position reversing valve having an external force member according to an embodiment of the present invention. The T-shaped valve C and the one end of the inlet pipe of the T-shaped valve D are respectively connected to the working cylinder through the connecting pipe. 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 both located at the S position, and the transaction assembly is in the left station.

7 is a diagram showing an inlet pipe on a T-shaped valve using a spring as an external force member in series according to an embodiment of the present invention, which is disposed in series on a three-way directional control valve having an external force member, and a three-way directional control valve. The two outer interfaces are connected to the working cylinder through the connecting pipe. The first eccentric A and the second eccentric B are both located at the S position, and the third eccentric C and the fourth eccentric D are both located at the T position.

7A illustrates two external interfaces on a three-position directional control valve having an external force member in communication with a working cylinder through a connecting pipe, a first eccentric A, a second eccentric B, and a third eccentric C. The fourth eccentric wheel D is located at the S position, and the transaction component is in the middle station.

FIG. 7B illustrates that two external interfaces on the three-position directional control valve having 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 The eccentric B, the third eccentric C are located at the T position, and the dissimilar component is located at the right station.

FIG. 7C illustrates that the two external interfaces on the three-position directional control valve having the external force member are connected to the working cylinder through the connecting pipe, and the second eccentric B and the third eccentric C are both located at the S position. The eccentric A and the fourth eccentric D are both located at the T position, and the transaction component is located at the left station.

FIG. 8A is a schematic view of a sub-valve in an embodiment of the invention, wherein the separator in the sub-valve is a separator diaphragm.

FIG. 8B is a schematic view of a sub-valve in the embodiment of the present invention, wherein the partition member in the sub-valve is a partitioning piston.

FIG. 9 is a schematic diagram of a differentiating component in an embodiment of the present invention.

Referring to the drawings, wherein like reference numerals refer to the same or the The following description is based on the specific embodiments of the invention, which are not to be construed as limiting the invention.

The name of the T-shaped valve is called a T-shaped valve because the shape of the lower valve body 4 and the upper valve body 5 is similar to the letter T.

The three-position reversing valve composed of the T-valve 1 (shown in FIG. 2) is called a T-valve three-position reversing valve 35, as shown in FIG.

The three-position reversing valve composed of the T-valve type inlet valve 3 (shown in FIG. 4) is called a three-position reversing valve 36, as shown in FIG.

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 (as shown in Fig. 1 and Fig. 2), and the guide post 17 is formed by the two ends and the first sealing surface 8, and the second sealing surface 9 matched column members 18, and a column 19 at both ends of the column member 18, the guide column 17 is disposed in the water dividing passage 7, the first chamber 10 and the column In the guide column chamber 16 composed of the passage 11, the external force member 20 is disposed at a position corresponding to the column outside the end of the column passage end, and the drainage channel 12 (see FIG. 3) can be disposed on the side of the T-shaped valve column passage 11 (T-shaped) A blind cavity can be set in the valve inlet pipe corresponding to the water dividing channel (see Fig. 3A, and a spring (see Fig. 3B) can also be provided in the blind cavity).

Part of the medium in the water dividing passage 7-T-shaped valve inlet pipe 6 enters the passage of the first chamber.

The water outlet channel 13 - the passage of the medium from the first chamber to another location or from another location into the first chamber.

The mast passage 11 - when the guide post moves in the guide post chamber, limits the range of radial movement of the post 19 on the guide post 17 within the post passage 11 and also discharges the medium in the first chamber from the T-valve Channel.

The drainage channel 12 - discharges the fluid medium in the first chamber from the column passage 11 to the diversion passage of the T-shaped valve, so that the fluid medium originally discharged through the rod passage can be diverted to the drainage passage, for example, the drainage is installed on the drainage channel. The fluid medium discharged through the drainage channel can be discharged to a designated location.

The first chamber 10 is a space defining an axial movable distance of the column, the first chamber has a first sealing surface at one end and a second sealing surface at the other end, and two sealing surfaces and columns at the two ends of the first chamber The ends of the member 18 are matched, the length of the axial direction of the first chamber is longer than the length of the axial direction of the column member, and the width of the first chamber in the radial direction is wider than the width of the column member in the radial direction.

The guide column chamber 16-guide column chamber is composed of a water dividing passage, a first chamber and a column passage, and the guide column can be axially moved in the guide column chamber, and one end of the column on the guide column can protrude outside the column passage, The pole at the other end of the column can protrude from the water dividing passage and enter the blind cavity.

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

The role of the blind cavity and the inner cavity of the blind cavity is as follows.

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 from the T-valve B outlet passage 13 into the medium in the first chamber 10 of the T-valve D, so that one end of the T-shaped valve D column member 18 The spring is disposed in the blind cavity 31, and 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 first sealing surface 8, and the other end of the column member Adhering to the second sealing surface 9, when the eccentric on the T-shaped valve D is in the T position, one end of the T-shaped valve D column member is fitted to the first sealing surface, and the other end of the column member and the second sealing surface Separation (see Figure 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. Receiving the pressure from the T-valve A water outlet passage 13 into the medium in the first chamber 10 of the T-shaped valve C, one end of the T-shaped valve C-pillar member 18 is fitted to the first sealing surface, and is disposed in the blind cavity 31. The spring, 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 first sealing surface 8, and the other end of the column member is attached to the second sealing surface 9, when the T-shaped valve C is When the eccentric is in the T position, one end of the T-cylinder C-pillar is attached to the first sealing surface, and the other end of the column is separated from the second sealing surface (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 restrain the radial movement range of entering the blind cavity column, so that the guide column can be more stably axially moved, T-shaped. Valve C, T-shaped valve D is provided with a spring in the blind cavity, which can also restrain the radial movement range of the blind cavity rod, so that the guide column can move axially more stably.

A blind cavity with a spring (see Figure 3B) is provided in the blind cavity and can enter into the blind cavity. The spring 15 in contact with the column rod, the spring force direction of the spring points to the water dividing channel, and when the corresponding eccentric wheel is located at the S position, the spring disposed in the blind cavity can overcome the force of the fluid medium on the column member. One end of the column member is separated from the first sealing surface, and the other end of the column member is fitted to the second sealing surface.

The auxiliary valve 2 is mainly composed of an inlet pipe, an outlet pipe, a separation port, a partition member, a second chamber, a third chamber, and a B-channel auxiliary valve. When combined with a T-valve, it can be a T-valve type. Water valve.

The movable component-one eccentric wheel and the elastic pressing piece constitute a movable member, and the eccentric wheels on the plurality of different movable members are connected together by one shaft to become a different-moving component, because the eccentric wheels on the different-moving component have an installation angle therebetween The difference is that at the same time, the eccentric wheels on the differentiating components pass through the elastic pressing piece, showing different mutual positional relations to the corresponding guiding columns, and the three positions represented by the blocking component in three moments are called left-handed work. Bit, medium station and 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 floating 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 more The external force pieces are combined and used.

The eccentric wheel and the elastic pressing piece 37 may constitute a movable member 38, and the plurality of movable members 38 may 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 stations of left, middle and right relative to the pole of the pole channel. 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 different-moving component can be used as the external force member, and other types of external force members can also 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 drainage channel 12 of the column passage 11 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 that may exist between the column 19 and the column passage 11 when the column moves in the column chamber. The pressure of the fluid medium causes the column member 18 to move toward The second sealing surface 9 is such that one end of the column member is in contact with the second sealing surface. 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 column 19, and the force of the external force member can move the column member to the first position. The sealing surface is such that one end of the column member is fitted to the first sealing surface, and the other end of the column member is separated from the second sealing surface.

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 to the first seal The surface of the column member is adhered to the first sealing surface, and when the other end of the column member is separated from the second sealing surface, the position where the eccentric wheel is located is referred to as a T position, and when the external force member is a movable member, the movable member is When the eccentric wheel rotates, the eccentric wheel is separated from 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 moves the column member to the second sealing surface, and one end of the column member is The second sealing surface is attached to the table. When the other end of the column is separated from the first sealing surface, the position where the eccentric 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 partitioning 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 partitioning member is movable in the second chamber. Between the chamber and the third chamber. 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 first sealing surface, and one end of the column member is fitted to the first sealing surface, and the column member is The other end is separated from the second sealing surface, and a part of the fluid medium in the third chamber 29 is discharged through the B channel (ie, the communication pipe) 30, the water outlet channel 13, the first chamber 10, and the drainage channel 12, and the third chamber is The fluid medium is depressurized, the pressure in the third chamber is equivalent to the ambient pressure, the pressure in the third chamber is at a low position, and at the same time the pressure of the fluid medium having pressure in the inlet pipe is separated from the partition 26 by the pressure of the fluid medium. The pressurized fluid medium in the water pipe flows through the second chamber 28 and the partition port 26 to the outlet pipe 25, the pressure in the second chamber is relative to the pressure in the third chamber, and the pressure in the second chamber is at a high position, the T-valve type The inlet valve is open. When the eccentric on the movable member is in the S position, the pressure of the fluid medium in the inlet pipe moves the column member to the second sealing surface, and one end of the column member is fitted to the second sealing surface, and the other end of the column member is A sealing surface is separated. Since one end of the column member is separated from the first sealing surface, a part of the fluid medium in the inlet pipe passes from the water dividing passage 7, the first chamber 10, the water outlet passage 13, the B passage 30, and the third chamber 29 The pressure in the third chamber is equal to the pressure in the inlet pipe, and when the fluid medium in the inlet pipe flows from the inlet pipe 6, the second chamber 28, and the separation port 26 to the outlet pipe 25, according to Bernoulli's theorem: fluid When the medium is flowing, the faster the flow rate, the smaller the pressure, so the pressure at the partition is smaller than the pressure in the third chamber. Under the pressure difference, the partition matching the partition is brought closer to the partition, and finally separated. The mouth is fitted, and since the partition member is fitted to the partition port, the pressurized fluid medium cannot flow from the inlet pipe to the outlet pipe through the partition port, and the pressure in the outlet pipe is low. The pressure in the outlet pipe is equivalent to the ambient pressure. The partition and the partition are closely fitted under the pressure difference, and the T-valve inlet valve 3 is closed. In summary, when the eccentric is at the S position, one end of the upper tubular member of the T-shaped valve inlet valve is separated from the first sealing surface, and the other end of the cylindrical member is attached to the second sealing surface, the partition and the partition Fitted, the T-valve inlet valve is closed. When the eccentric is at the T position, one end of the upper member of the T-shaped valve inlet valve is fitted to the first sealing surface, and when the other end of the column member is separated from the second sealing surface, the partition is separated from the separation port, the T-shaped valve The inlet 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 first sealing surface, and one end of the column is fitted to the first sealing surface, the column The other end of the piece is separated from the second sealing surface, the column member of the T-shaped valve B is adjacent to the second sealing surface, one end of the column member is fitted to the second sealing surface, and the other end of the column member is separated from the first sealing surface, the fluid medium From the water inlet 22 into the water inlet pipe 6, the water dividing passage 7, the first chamber 10, and the water outlet passage 13 of the T-shaped valve B, enter the working cylinder 21 via the connecting pipe 24, move the piston 14 in the working cylinder, and move the piston. The fluid medium on the other side of the piston in the working cylinder is forced to enter the water outlet passage 13 of the T-shaped valve A through the connecting pipe, the first chamber 10, and the fluid medium is discharged from the drain passage 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 second sealing surface, and one end of the column is fitted to the second sealing surface, the column The other end of the piece is separated from the first sealing surface, the column member of the T-shaped valve B is adjacent to the first sealing surface, one end of the column member is fitted to the first sealing surface, and the other end of the column member is separated from the second sealing surface, the fluid medium Entering from the water inlet 22 The water inlet pipe 6, the water dividing passage 7 of the T-shaped valve A, the first chamber 10, the water outlet passage 13, and the connecting pipe 24 enter the working cylinder 21, so that the piston 14 in the working cylinder moves, and the movement of the piston forces the piston in the working cylinder The fluid medium on the other side enters the water outlet passage 13 of the T-shaped valve B, the first chamber 10 through the connecting pipe, and discharges the fluid medium from the drain passage 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 types 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 of them is adjacent to the first sealing surface, and one end of each of the column members is respectively fitted to the corresponding first sealing surface, the fluid medium passages are all closed, and the piston in the working cylinder is locked (see Fig. 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 passage of the T-shaped valve B, the first chamber, the water outlet passage, the water outlet passage into the T-shaped valve D, the first chamber, the water dividing passage, the inlet pipe, and the connecting pipe, The working cylinder moves the piston in the working cylinder, 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 passage, the first chamber and the water outlet channel of the T-shaped valve C through the connecting pipe, and enters the T The water outlet passage of the valve A, the first chamber, and the fluid medium are discharged from the drain passage to the T-shaped valve (see 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 first sealing surface, and one end of the column member is respectively matched with the corresponding first sealing surface, 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 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, from the water dividing passage of the T-shaped valve A, the first chamber, the water outlet passage, the water outlet passage of the T-shaped valve C, the first chamber, the water dividing passage, the water inlet pipe, and the connected The tube enters the working cylinder to move the piston in the working cylinder, 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 passage, the first chamber and the water outlet passage of the T-shaped valve D through the connecting pipe. Enter the water outlet passage of the T-valve B, the first chamber, and then discharge the fluid medium from the drain passage 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 first sealing surface, and one end of the column member is respectively matched with the corresponding first sealing surface, the fluid medium passages are all closed, and the piston in the working cylinder is locked and works. The piston in the cylinder also stops moving, and the piston 14 in the 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 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-shaped valve inlet valve. A, T-shaped valve type inlet valve B, T-shaped valve type inlet valve C, T-shaped valve type inlet valve D.

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

(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 first sealing surface, and the other end of the column member is respectively fitted with the corresponding second sealing surface, and the partitioning members on the four T-shaped valve type inlet valves are respectively separated from each other. The mouth is closed, 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 second chamber, the separation port, the outlet pipe, the outer interface 23, the connecting pipe, the working cylinder, and the working cylinder When the piston 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 second chamber, the separation port of the T-shaped valve inlet valve C through the connecting pipe and the outer interface 23, and then discharges from the outlet pipe ( See Figure 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-shaped valve upper end of each of the column members is separated from the corresponding first sealing surface, the other end of the column member is respectively fitted with the corresponding second sealing surface, and four T-shaped valve type inlet valves Separate parts on each When the partition is fitted, the fluid medium passages are all closed, the piston in the working cylinder is locked, the piston in the working cylinder stops moving, the piston in the working cylinder stops, and when the fluid medium passage is completely closed, the piston moves to the position. (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-shaped valve inlet valve A, the second chamber, the separation port, the outlet pipe, the external interface, the connecting pipe, the working cylinder, and the working cylinder When the piston 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 interface, the inlet pipe entering the T-shaped valve inlet valve D, the second chamber, the separation port, and then discharged from the outlet pipe ( See Figure 7C).

(5), the transaction component is turned to the left again, and 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 returned to the S position. , one end of each of the four T-shaped valve inlet valve T-shaped valve upper column is separated from the corresponding first sealing surface, the other end of the column member is respectively matched with the corresponding second sealing surface, four T-shaped valve type The partitions on the inlet valve are respectively matched with the partitions, the fluid medium passages are all closed, the pistons in the working cylinders are locked, the pistons in the working cylinders are stopped, and the pistons in the working cylinders are stopped, when the fluid medium passages When all are closed, the piston moves to the position (see Figure 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-shaped valve 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 provided by the pole channel, the spring direction refers to the guide column, and the spring force of the spring at the end of the column is equivalent to the inlet pipe of the guide column in the direction of the column. The upper limit of the pressure set by the internal 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 guide post on the T-shaped valve. One end of the column member is separated from the first sealing surface, and the fluid medium exceeding the upper limit of the set pressure in the inlet pipe passes through the water dividing passage of the T-shaped valve using the spring as the external force member, and the first chamber is discharged from the water outlet passage to make the reversing valve With a pressure limiting function. For example, if a handle is added to the end of the T-shaped valve stem rod through which the spring is used as an external force member, the T-shaped valve can be manually operated, and the fluid medium in the inlet pipe is manually operated when one end of the column member is separated from the first sealing surface. The water dividing passage and the first chamber of the T-shaped valve using the spring as the external force member are discharged from the water outlet passage, so that the reversing valve has a 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, The inlet pipe, the water dividing passage, the first chamber, the water outlet passage of the T-shaped valve C or the T-shaped valve D, the water outlet passage through the adjacent T-shaped valve, the first chamber, the drainage passage, the inlet and outlet cylinders, T The piston in the valve-type three-position selector 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 pass through the connecting pipe, the outer interface, and the T-shaped valve inlet valve. The inlet pipe, the second chamber, the separation port, the outlet pipe of the C- or T-valve type inlet valve D, the inlet and outlet cylinders, and the piston in the three-position reversing valve cylinder are 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 be combined with each other in a variety of different uses, as long as the structural members thereof 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 has greater flexibility, which can effectively improve product quality and reduce product cost.

While the invention has been described above in terms of the preferred embodiments, the invention is not intended to limit the invention, and the invention may be practiced without departing from the spirit and scope of the invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

Claims (10)

A T-shaped valve includes a lower valve body and an upper valve body, wherein: the T-shaped valve further comprises a guide post, and the lower sealing body and the upper valve body are combined to form a first sealing surface on both sides formed in the middle of the valve body And a first chamber of the second sealing surface; and the lower valve body includes an inlet pipe and a water dividing passage communicating with the inlet pipe, the first sealing surface being located at the water dividing passage adjacent to the first chamber end, wherein The top end of the valve body forms a column passage communicating with the outside, and the second sealing surface is located at the end of the column passage near the first chamber, the guide column is composed of an elongated column rod at both ends and a column member with an intermediate protrusion, the column member The two ends of the first chamber are matched with the first sealing surface and the second sealing surface in the first chamber, the length of the axial direction of the first chamber is longer than the length of the axial direction of the column, and the width of the first chamber is larger than the diameter of the column. The width of the direction is wide, and the two ends of the column member can be respectively sealed with the first sealing surface or the second sealing surface in the first chamber, and the guiding column is disposed in the water dividing passage, the first chamber and the column passage In the formed guide pillar chamber, one end of the pole can protrude outside the pole passage, and the guide pillar can be made in the guide pillar chamber The movement distance of axial movement of the guide post is limited to the column member guide post in the first chamber from moving axially. The T-shaped valve according to claim 1, wherein a position of the inlet pipe corresponding to the water dividing passage is provided with a blind cavity, and one end of the column in the water dividing channel of the guiding column can protrude from the water dividing channel. Enter the blind cavity. The T-shaped valve according to claim 1, wherein a spring disposed in the inlet pipe corresponding to the water dividing passage is provided with a spring that can contact the pole entering the blind cavity, the spring The direction of the spring force points to the water dividing channel. The T-shaped valve according to claim 1, wherein a drain passage is disposed at a side of the T-shaped valve stem passage, and a position corresponding to the outer pole of the upper valve stem passage outside the mast There are external force parts. The 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 different moving component, and the elastic pressing piece is disposed on the eccentric wheel. Below, between the eccentric wheel and the pole protruding from the pole channel, under the action of the eccentric wheel, the movable member or the movable component has three left, middle and right positions relative to the pole of the column end of the pole. When the external force on the T-shaped valve is composed of the eccentric wheel and the elastic pressing piece, the vertical line of the eccentric wheel on the T-shaped valve external force member and the column on the T-shaped valve may not be on one axis. A two-position reversing valve comprising two inlet pipes of a T-shaped valve as described in claim 1 of the patent application, which are closed by two ends of the communicating inlet pipe, and a water inlet is arranged on the inlet inlet pipe to constitute Two-position reversing valve. A T-valve three-position directional control valve, comprising one end of each of the four inlet pipes of the T-shaped valve according to claim 1 of the patent application, wherein the inlet pipes of the two T-shaped valves are connected, and the communication is connected. The water inlet is arranged on the water pipe, and the water outlet passages on the other two T-shaped valves are respectively connected with the water outlet passages on the two T-shaped valves communicating with the water inlet pipe to form a T-shaped valve type three-position reversing valve. A T-shaped valve type water inlet valve comprising a T-shaped valve as described in claim 1 and a sub-valve connected to form a T-shaped valve type water inlet valve, the auxiliary valve being composed of an inlet pipe and an outlet pipe, a partitioning port, a partitioning member, a second chamber, a third chamber, and a connecting duct. The partitioning member is located between the third chamber and the second chamber, so that the third chamber is connected to the second chamber without being connected. The B channel is located at the third chamber end, the inlet pipe is connected to the second chamber, the outlet pipe is connected to the separation port, and the separation port is located between the second chamber and the outlet pipe, and the separation port corresponds to the partition member and matches each other, and is separated The port and the partition member may be attached to each other or may be separated from each other, the partition member may be movable between the second chamber and the third chamber, and the communication pipe on the third chamber communicates with the water outlet passage on the T-shaped valve. The inlet pipe on the secondary valve communicates with the inlet pipe on the T-valve. A three-position reversing valve comprising four T-shaped valve type inlet valves as described in claim 8 of the patent application, wherein two inlet pipes on two T-shaped valve 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 outer interface to form a three-position reversing valve. The directional control valve according to any one of the preceding claims, wherein the external force member on the T-shaped valve is a spring, and the inlet pipe on the T-shaped valve whose external force is a spring is arranged in series in the reversing direction. The valve is connected to two inlet pipes.