CN221237226U

CN221237226U - Reversing slide valve with non-return function

Info

Publication number: CN221237226U
Application number: CN202322301630.XU
Authority: CN
Inventors: 叶海游; 叶茂; 林微琴; 廖雪松; 王恩驰
Original assignee: CHINA HUAM DEVELOPMENT TECHNOLOGY CO LTD
Current assignee: CHINA HUAM DEVELOPMENT TECHNOLOGY CO LTD
Priority date: 2023-08-26
Filing date: 2023-08-26
Publication date: 2024-06-28
Anticipated expiration: 2033-08-26

Abstract

The utility model provides a switching-over slide valve with non return function, including valve body and case, be equipped with the valve pocket in the valve body, the valve pocket is equipped with first inlet, the second inlet, first liquid outlet, the second liquid outlet, main liquid outlet, case sliding fit is in the valve pocket, the fixed spacing that is equipped with in side of case, the spout that spacing and valve pocket inner wall were equipped with constitutes the slide rail cooperation, case one end is equipped with the liquid chute, and be equipped with the capping at the liquid chute, the case side still axially is equipped with the liquid outlet in proper order, first annular, go into liquid hole and second annular, the side of liquid outlet intercommunication main liquid outlet and liquid chute, go into the non return mouth that liquid hole intercommunication liquid chute bottom was equipped with, be equipped with the floating shutoff ball in the liquid chute, the inboard fixed stand that is equipped with of capping, main liquid outlet keeps the intercommunication with the liquid chute, when main liquid outlet takes place the backward flow, the non return function will be realized to shutoff non return to the shutoff.

Description

Reversing slide valve with non-return function

Technical Field

The utility model relates to the technical field of vehicle parts, in particular to a reversing slide valve with a non-return function.

Background

The existing reversing slide valve has single function, has no backflow preventing function structure in the valve body, and is easy to cause valve core deviation to reduce reversing accuracy.

Disclosure of Invention

In order to solve the problems, the utility model provides a reversing slide valve with a non-return function: the utility model provides a switching-over slide valve with non return function, includes valve body and case, be equipped with the valve pocket in the valve body, the valve pocket is equipped with first inlet and second inlet that are located the homonymy, first liquid outlet and second liquid outlet that are located the homonymy and main liquid outlet, case sliding fit is in the valve pocket, the side of case is fixed to be equipped with spacing, spacing with the spout that the valve pocket inner wall was equipped with constitutes the slide rail cooperation, case one end is equipped with the liquid chute, and the liquid chute is equipped with the capping, the case side still axially is equipped with liquid hole, first annular, income liquid hole and second annular in proper order, liquid hole intercommunication main liquid outlet with the side of liquid chute, income liquid hole intercommunication the check mouth that liquid flow tank bottom was equipped with, be equipped with in the liquid chute be used for the shutoff ball that floats, the capping inboard be equipped with be used for with the top lean on spacing stand, the liquid hole is located the side of stand, first be used for the intercommunication first liquid inlet and second annular.

Preferably, a first control cavity is arranged on the side of the groove cover of the valve body, and a control liquid port is arranged in the first control cavity and used for liquid control reversing.

Preferably, the first control cavity is provided with a valve cover, the inner end part of the valve cover is provided with a truncated cone-shaped limiting end, the limiting end is used for forming the propping limit of the valve core, the control liquid port is located at the side of the limiting end, the valve core is convenient to install, and meanwhile the valve core is prevented from blocking the control liquid port.

Preferably, the valve core is further provided with a top position groove, the top position groove and the liquid flow groove are respectively located at two ends of the valve core, the valve body is provided with a second control cavity communicated with the top position groove, the second control cavity is provided with an end cover, a reset spring is in propping fit between the end cover and the valve core, one end of the reset spring penetrates into the top position groove, and the reset spring is used for the valve core to move back.

Preferably, a boss is arranged at the inner end of the end cover, and the reset spring is sleeved on the boss, so that the reset spring is convenient to install.

Preferably, the end cover is provided with an overflow channel, the overflow channel is communicated with the second control cavity and an overflow connecting pipe arranged on the valve body, and the overflow connecting pipe can drain or pump the second control cavity in the moving process of the valve core.

The utility model has the following beneficial effects: the main liquid outlet is communicated with the liquid flow groove, and when the main liquid outlet flows back, the floating blocking ball in the liquid flow groove realizes the non-return function by blocking the non-return opening.

Drawings

Fig. 1 is a schematic view of a valve cavity structure of an embodiment.

Fig. 2 is a schematic diagram of the internal structure principle of the embodiment.

Fig. 3 is a schematic diagram of a valve core structure according to an embodiment.

Fig. 4 is a schematic diagram illustrating a state after the switch of the embodiment.

1. A valve body; 2. a valve core; 3. a first liquid inlet; 4. a second liquid inlet; 5. a first liquid outlet; 6. a second liquid outlet; 7. a main liquid outlet; 8. a limit bar; 9. a chute; 10. a liquid flow groove; 11. a slot cover; 12. a liquid outlet hole; 13. a first ring groove; 14. a liquid inlet hole; 15. a second ring groove; 16. a non-return port; 17. a floating blocking ball; 18. a column; 19. a first control chamber; 20. a control liquid port; 21. a valve cover; 22. a limiting end; 23. a top slot; 24. a second control chamber; 25. an end cap; 26. a return spring; 27. a boss; 28. an overflow channel; 29. And (5) an overflow pipe.

Description of the embodiments

The utility model will be further described with reference to fig. 1 to 4 and examples.

The reversing slide valve with the check function comprises a valve body 1 and a valve core 2, wherein a valve cavity is arranged in the valve body 1, a first liquid inlet 3 and a second liquid inlet 4 which are positioned on the same side, a first liquid outlet 5 and a second liquid outlet 6 which are positioned on the same side and a main liquid outlet 7 are arranged in the valve cavity, the valve core 2 is slidably matched in the valve cavity, a limit strip 8 is fixedly arranged on the side surface of the valve core 2, the limit strip 8 is matched with a slide groove 9 arranged on the inner wall of the valve cavity to form a slide rail, a liquid groove 10 is arranged at one end of the valve core 2, a groove cover 11 is arranged on the liquid groove 10, a liquid outlet hole 12, a first annular groove 13, a liquid inlet 14 and a second annular groove 15 are axially and sequentially arranged on the side surface of the valve core 2, the liquid outlet hole 12 is communicated with the side surface of the liquid groove 10, the liquid inlet hole 14 is communicated with a check hole 16 arranged at the bottom of the liquid groove 10, a floating blocking ball 17 used for blocking the check hole 16 is arranged in the liquid groove 10, a vertical column 18 used for being fixedly arranged on the inner side of the groove cover 11 to form a top to be limited vertical column 18, the liquid outlet hole 12 is positioned on the side of the vertical column 18, and the first 13 is used for communicating the first liquid inlet 3 with the first liquid inlet 5 and the second liquid outlet 4 and the second annular groove 15.

The valve body 1 is provided with a first control cavity 19 at the side of the tank cover 11, and the first control cavity 19 is provided with a control liquid port 20 for hydraulically controlling reversing; the first control cavity 19 is provided with a valve cover 21, the inner end part of the valve cover 21 is provided with a truncated cone-shaped limiting end 22, the limiting end 22 is used for forming the propping limit of the valve core 2, the control liquid port 20 is positioned at the side of the limiting end 22, the valve core 2 is convenient to install, and the valve core 2 is prevented from blocking the control liquid port 20; the valve core 2 is also provided with a top position groove 23, the top position groove 23 and the liquid flow groove 10 are respectively positioned at two ends of the valve core 2, the valve body 1 is provided with a second control cavity 24 communicated with the top position groove 23, the second control cavity 24 is provided with an end cover 25, a reset spring 26 is in propping fit between the end cover 25 and the valve core 2, one end of the reset spring 26 penetrates into the top position groove 23, and the reset spring 26 is used for the valve core 2 to move back.

The inner end of the end cover 25 is provided with a boss 27, the reset spring 26 is sleeved on the boss 27, the reset spring 26 is convenient to install, the end cover 25 is provided with an overflow channel 28, the overflow channel 28 is communicated with an overflow connecting pipe 29 arranged between the second control cavity 24 and the valve body 1, and the overflow connecting pipe 29 can drain or pump the second control cavity 24 in the moving process of the valve core 2.

Working principle: the fluid control of the movement of the valve core 2 is realized by sucking the fluid in the first control chamber 19 from the control fluid port 20, as shown in the state positions of the valve core 2 with two fluid flow reversing directions in fig. 1 and 2 respectively. In fig. 1, the first liquid inlet 3 is communicated with the main liquid outlet 7, and the second liquid inlet 4 is communicated with the second liquid outlet 6 through the second annular groove 15; in fig. 1, the second liquid inlet 4 is communicated with the main liquid outlet 7, and the first liquid inlet 3 is communicated with the first liquid outlet 5 through the first annular groove 13; in the two states, the main liquid outlet 7 is kept communicated with the liquid flow groove 10, and when the main liquid outlet 7 is in backflow, the floating blocking ball 17 is downstream to block the non-return opening 16 to realize the non-return function.

It is apparent that the above examples of the present utility model are merely illustrative of the present utility model and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary or impossible to exemplify all embodiments herein. And obvious changes and modifications which come within the spirit of the utility model are desired to be protected.

Claims

1. A reversing slide valve with a non-return function, characterized in that: including valve body (1) and case (2), be equipped with the valve pocket in valve body (1), the valve pocket is equipped with first inlet (3) and second inlet (4) that are located the homonymy, first outlet (5) and second outlet (6) that are located the homonymy and main outlet (7), case (2) sliding fit is in the valve pocket, the fixed spacing (8) that is equipped with in side of case (2), spacing (8) with spout (9) that the valve pocket inner wall was equipped with constitute the slide rail cooperation, case (2) one end is equipped with liquid chute (10), and liquid chute (10) are equipped with capping (11), case (2) side still axially is equipped with liquid outlet (12), first annular groove (13), income liquid hole (14) and second annular groove (15) in proper order, liquid outlet (12) intercommunication main outlet (7) with the side of liquid chute (10), liquid inlet (14) intercommunication liquid chute (10) bottom is equipped with spout (16), be equipped with in the case (2) one end is equipped with liquid chute (16) and is equipped with shutoff ball (17) and is used for fixing in the shutoff ball (17) top stopper (17), the liquid outlet hole (12) is positioned at the side of the upright post (18), the first annular groove (13) is used for communicating the first liquid inlet (3) with the first liquid outlet (5), and the second annular groove (15) is used for communicating the second liquid inlet (4) with the second liquid outlet (6).

2. A reversing slide valve with a non-return function according to claim 1, characterized in that: the valve body (1) is provided with a first control cavity (19) at the side of the groove cover (11), and the first control cavity (19) is provided with a control liquid port (20).

3. A reversing slide valve having a non-return function according to claim 2, wherein: the valve is characterized in that the first control cavity (19) is provided with a valve cover (21), the inner end part of the valve cover (21) is provided with a truncated cone-shaped limiting end (22), the limiting end (22) is used for forming the propping limit of the valve core (2), and the control liquid port (20) is located at the side of the limiting end (22).

4. A reversing slide valve having a non-return function according to claim 2, wherein: the valve core (2) is further provided with a top position groove (23), the top position groove (23) and the liquid flow groove (10) are respectively located at two ends of the valve core (2), the valve body (1) is provided with a second control cavity (24) communicated with the top position groove (23), the second control cavity (24) is provided with an end cover (25), the end cover (25) is in propping fit with a return spring (26) between the valve core (2), and one end of the return spring (26) penetrates into the top position groove (23).

5. The reversing slide valve with a check function according to claim 4, wherein: the inner end of the end cover (25) is provided with a boss (27), and the return spring (26) is sleeved on the boss (27).

6. The reversing slide valve with a check function according to claim 4, wherein: the end cover (25) is provided with an overflow channel (28), and the overflow channel (28) is communicated with the second control cavity (24) and an overflow connecting pipe (29) arranged on the valve body (1).