A control valve with a protective structure

Abstract

The present invention relates to the field of control valve technology, specifically a control valve with a protective structure, comprising: an operating valve body, a connecting nozzle welded on the top surface of the operating valve body, a sealing ring placed on the top surface of the connecting nozzle, a connecting block installed on the top surface of the sealing ring, a connecting pipe welded on the top surface of the connecting block, a control valve switch connected to the top of the connecting pipe, and a fixed structure installed on the top surface of the operating valve body, the fixed structure comprising a fixed cylinder, the fixed cylinder is fixedly welded on the top surface of the operating valve body, and a movable cavity is opened on the surface of the fixed cylinder. The control valve of the present invention can protect the top surface of the fixed structure through the protective structure, so that the fixed structure is not eroded by rainwater and the service life is extended. At the same time, when the protective structure is disassembled and assembled, the automatic extension and retraction of the sliding block can be realized through the cooperation of the third contact surface and the strong spring, which is simple to operate and has a better use effect.

Description

Technical Field

[0001] The invention relates to the technical field of control valves, and in particular to a control valve with a protective structure. Background Art

[0002] The control valve of construction machinery is an energy control element. The operating valve body and the control valve switch are often installed with a threaded sealing installation. Since the control valve switch is made of brass, thread damage and stripping are prone to occur, and the installation and disassembly efficiency is low. After the parts are damaged, the replacement cost is high.

[0003] In this regard, China applied for patent number: CN2220645553.3, which discloses a hydraulic control valve, including an operating valve body, a top cover, a fixed nozzle, a base, a fan-shaped groove, a clamping ring groove, an adjusting ring, a fastening device, a connecting nozzle, and a control valve switch. The top of the operating valve body is bolted with a top cover, a fixed nozzle is welded at the center of the top cover, a circular base is welded on the outer wall of the fixed nozzle, four fan-shaped grooves of equal angles are axially opened on the circumference of the base, a clamping ring groove is opened on the circumference of the upper outer wall of the base, the adjusting ring is installed on the top of the base, the fastening device is installed inside the base, the connecting nozzle is connected to the top of the fixed nozzle, and the control valve switch is threadedly connected to the top of the connecting nozzle. The utility model changes the traditional thread installation method, making installation or replacement faster and more efficient, and also avoids the situation where the operating valve body is damaged or stripped due to copper materials.

[0004] However, the control valve clamps the connecting nozzle downwards through the fastening hook. When the connecting nozzle is disassembled or assembled, the fastening hook needs to be manually pried open. In addition, the top surface of the fastening hook is not covered and is easily eroded by rainwater during use, resulting in inflexible movement and affecting the service life of the control valve.

[0005] Therefore, in order to solve the above problems, a control valve with a protection structure is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a control valve with a protective structure to solve the problem that the control valve mentioned in the background art clamps the connection nozzle downward through the fastening hook, and the connection nozzle needs to be manually moved when the fastening hook is disassembled, and the top surface of the fastening hook is not shielded, which is easily corroded by rainwater during use, resulting in inflexible movement and affecting the service life of the control valve.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a control valve with a protective structure, comprising: an operating valve body, a connecting nozzle welded on the top surface of the operating valve body, a sealing ring placed on the top surface of the connecting nozzle, a connecting block installed on the top surface of the sealing ring, a connecting pipe welded on the top surface of the connecting block, a control valve switch connected to the top end of the connecting pipe, a fixing structure installed on the top surface of the operating valve body, the fixing structure comprising a fixing cylinder, the fixing cylinder is fixedly welded to the top surface of the operating valve body, a movable cavity is opened on the surface of the fixing cylinder, a concave thread is opened on the upper side of the movable cavity, and a sliding card is slidably installed inside the movable cavity A block, a first contact surface is provided on the outer surface of the sliding block, a second contact surface is provided on the bottom surface of the sliding block, a limit slider is provided on the side wall of the sliding block, a limit guide column is fixedly installed inside the movable cavity, a strong spring is fixedly connected to the side wall of the limit slider, a protective structure is installed on the top surface of the fixed structure, the protective structure includes a protective sleeve, a third contact surface is provided on the bottom surface of the protective sleeve, a blocking top block is inserted on the top surface of the protective sleeve, the top surface of the blocking top block is threadedly connected with a first bolt, the top surface of the blocking top block is welded with a connecting ear block, and the side wall of the connecting ear block is threadedly connected with a second bolt.

[0008] Preferably, the top surface of the connecting block is an inclined surface and is lower than the top surface of the movable cavity, and the upper end of the connecting tube is exposed from the top end of the fixing tube.

[0009] Preferably, the fixing tube is sleeved on the outside of the connecting nozzle, and the inner diameter of the fixing tube is equal to the outer diameter of the connecting block.

[0010] Preferably, the movable cavity is provided with six groups in total, the length of the sliding block is greater than the length of the movable cavity, the first contact surface is consistent with the third contact surface, and the second contact surface is consistent with the inclined surface of the top surface of the connecting block.

[0011] Preferably, the limit slider is slidably installed in the inner wall of the active cavity, the limit guide column passes through the limit slider, and one end of the strong spring is fixedly connected to the inner wall of the active cavity.

[0012] Preferably, the inner diameter of the protective sleeve is equal to the outer diameter of the fixed sleeve, a convex thread matching the concave thread is provided on the inner wall of the protective sleeve, and the third contact surface is located at the lower side of the movable cavity.

[0013] Preferably, a sealing gasket is provided on the bottom surface of the shielding top block, and two groups of shielding top blocks are provided, and the shielding top block is fixed to the top surface of the protective sleeve by a first bolt.

[0014] Preferably, a sealing gasket is provided on the inner wall of the connecting ear block, and two groups of connecting ear blocks are provided, and the two groups of connecting ear blocks are fixedly connected by second bolts.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the control valve of the present invention can protect the top surface of the fixed structure through the protective structure, so that the fixed structure is not corroded by rainwater and the service life is extended. At the same time, when the protective structure is disassembled and assembled, the third contact surface and the strong spring cooperate to realize the automatic extension and retraction of the sliding block, which is simple to operate and has a better use effect.

[0016] An operating valve body, a fixed structure and a protective structure are provided. Two groups of shielding top blocks are spliced ​​and sleeved on the middle part of the connecting pipe and fixed with a second bolt. The shielding top block is fixed to the top surface of the protective sleeve by the first bolt. The connecting block is inserted into the interior of the fixed tube, and the protective sleeve is covered on the upper end of the fixed tube. The top surface of the fixed structure can be protected, so that the fixed structure is not eroded by rainwater, and the service life is extended. The protective sleeve is rotated to connect the convex thread on the inner side of the protective sleeve with the concave thread, so that the protective sleeve moves downward on the fixed tube, and the third contact surface contacts the first contact surface on the surface of the sliding block, and pushes the sliding block to slide inside the active cavity. The limit slider stretches the strong spring, and the sliding block approaches the connecting pipe, and the second contact surface contacts the inclined surface of the top surface of the connecting block, so that the connecting block can be pressed down, and the connecting block cooperates with the connecting nozzle to extrude the sealing ring, so that the connection sealing between the connecting nozzle and the connecting block can be improved. At the same time, the activity of the sliding block is realized by the installation of the protective sleeve, and there is no need to manually operate the sliding block. The operation is simple, the functionality is strong, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic front view of the structure of the operating valve body of the present invention;

[0018] Figure 2 It is a schematic front cross-sectional view of the structure of the protective sleeve of the present invention;

[0019] Figure 3 It is a schematic diagram of the explosion of the structure of the protective structure of the present invention;

[0020] Figure 4 It is a front view schematic diagram of the structure of the powerful spring in use state of the present invention;

[0021] Figure 5 It is a schematic front cross-sectional view of the structure of the fixing tube of the present invention;

[0022] Figure 6 It is a schematic front view of the structure of the fixing tube of the present invention;

[0023] Figure 7 It is a front view schematic diagram of the structure of the sliding block of the present invention in the use state;

[0024] Figure 8 It is a schematic front view of the structure of the connecting block of the present invention.

[0025] In the figure: 1. operating valve body; 11. connecting nozzle; 12. sealing ring; 13. connecting block; 14. connecting pipe; 15. control valve switch; 2. fixing structure; 21. fixing cylinder; 22. movable cavity; 23. concave thread; 24. sliding block; 25. first contact surface; 26. second contact surface; 27. limiting slider; 28. limiting guide column; 29. ​​strong spring; 3. protective structure; 31. protective sleeve; 32. third contact surface; 33. shielding top block; 34. first bolt; 35. connecting ear block; 36. second bolt. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-8 , an embodiment provided by the present invention:

[0028] The operating valve body 1 and the control valve switch 15 used in the present application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0029] A control valve with a protective structure comprises: an operating valve body 1, a connecting nozzle 11 is welded on the top surface of the operating valve body 1, a sealing ring 12 is placed on the top surface of the connecting nozzle 11, a connecting block 13 is installed on the top surface of the sealing ring 12, a connecting pipe 14 is welded on the top surface of the connecting block 13, a control valve switch 15 is connected to the top of the connecting pipe 14, a fixing structure 2 is installed on the top surface of the operating valve body 1, the fixing structure 2 comprises a fixing cylinder 21, the fixing cylinder 21 is fixedly welded on the top surface of the operating valve body 1, a movable cavity 22 is provided on the surface of the fixing cylinder 21, a concave thread 23 is provided on the upper side of the movable cavity 22, a sliding block 24 is slidably installed inside the movable cavity 22, a first contact surface 25 is provided on the outer surface of the sliding block 24, a second contact surface 26 is provided on the bottom surface of the sliding block 24, and a limit slider 2 is provided on the side wall of the sliding block 24 7. A limiting guide column 28 is fixedly installed inside the movable cavity 22, and a strong spring 29 is fixedly connected to the side wall of the limiting slider 27. A protective structure 3 is installed on the top surface of the fixed structure 2. The protective structure 3 includes a protective sleeve 31. The bottom surface of the protective sleeve 31 is provided with a third contact surface 32. The top surface of the protective sleeve 31 is inserted with a shielding top block 33. The top surface of the shielding top block 33 is threadedly connected with a first bolt 34. A connecting ear block 35 is welded to the top surface of the shielding top block 33. The side wall of the connecting ear block 35 is threadedly connected with a second bolt 36. The protective structure 3 can protect the top surface of the fixed structure 2, so that the fixed structure 2 is not eroded by rainwater, and the service life is extended. At the same time, when the protective structure 3 is disassembled and assembled, the third contact surface 32 and the strong spring 29 cooperate to realize the automatic extension and retraction of the sliding block 24, which is simple to operate and has a better use effect.

[0030] Furthermore, the top surface of the connecting block 13 is an inclined surface and is lower than the top surface of the movable cavity 22. The upper end of the connecting tube 14 is exposed from the top end of the fixed cylinder 21. The inclined surface of the top surface of the connecting block 13 cooperates with the second contact surface 26, so that the connecting block 13 can be installed in place inside the fixed cylinder 21, squeezing the sealing ring 12 to make the connecting block 13 and the connecting nozzle 11 tightly connected.

[0031] Furthermore, the fixed tube 21 is sleeved on the outside of the connecting nozzle 11, and the inner diameter of the fixed tube 21 is equal to the outer diameter of the connecting block 13. The fixed tube 21 provides a guide for the installation of the connecting block 13, and can protect the connection between the connecting nozzle 11 and the connecting block 13, thereby ensuring the strength of the connection and extending the service life.

[0032] Furthermore, there are six groups of movable cavities 22, the length of the sliding block 24 is greater than the length of the movable cavity 22, the first contact surface 25 coincides with the third contact surface 32, the second contact surface 26 coincides with the inclined surface of the top surface of the connecting block 13, and the six groups of movable cavities 22 provide positions for the installation of six groups of sliding blocks 24, and when one end of the sliding block 24 is flush with the inner and outer walls of the fixed cylinder 21, the other end can be exposed, which provides a prerequisite for the third contact surface 32 to cooperate with the first contact surface 25 to realize the fixing of the sliding block 24 to the connecting block 13.

[0033] Furthermore, the limit slider 27 is slidably installed in the inner wall of the active cavity 22, the limit guide post 28 passes through the limit slider 27, and one end of the strong spring 29 is fixedly connected to the inner wall of the active cavity 22. The limit slider 27 cooperates with the limit guide post 28 to provide guidance for the sliding of the sliding block 24 inside the active cavity 22, so that the movement of the sliding block 24 remains stable, and the strong spring 29 automatically resets the sliding block 24. When the protective sleeve 31 is separated from the fixed cylinder 21, it can automatically retract into the active cavity 22 to realize that the sliding block 24 automatically releases the fixation of the connecting block 13, and there is no need to manually operate the sliding block 24. The operation is simple, the functionality is strong, and the use effect is better.

[0034] Furthermore, the inner diameter of the protective sleeve 31 is equal to the outer diameter of the fixed tube 21, and a convex thread matching the concave thread 23 is provided on the inner wall of the protective sleeve 31. The third contact surface 32 is located on the lower side of the movable cavity 22. The concave thread 23 cooperates with the convex thread, so that the protective sleeve 31 can be firmly installed on the top of the fixed tube 21, and the lower end of the protective sleeve 31 can block the movable cavity 22, thereby preventing debris from entering the movable cavity 22 and corroding parts, thereby further extending the service life of the device.

[0035] Furthermore, a sealing gasket is provided on the bottom surface of the shielding top block 33, and two groups of shielding top blocks 33 are provided. The shielding top block 33 is fixed to the top surface of the protective sleeve 31 by a first bolt 34. The provision of the sealing gasket here can make the connection between the protective sleeve 31 and the shielding top block 33 tighter, so as to prevent rainwater from entering the interior of the fixed tube 21 through the top of the protective sleeve 31, thereby further extending the service life of the device.

[0036] Furthermore, a sealing gasket is provided on the inner wall of the connecting ear block 35, and two groups of connecting ear blocks 35 are provided. The two groups of connecting ear blocks 35 are fixedly connected by a second bolt 36. The provision of the sealing gasket here can make the connection between the shielding top block 33 and the connecting pipe 14 tighter, so as to prevent rainwater from entering the interior of the fixed tube 21 along the connecting pipe 14, thereby further extending the service life of the device.

[0037] Working principle: Before use, the two groups of shielding top blocks 33 are assembled and sleeved on the surface of the connecting pipe 14, and then the two groups of shielding top blocks 33 are fixed to the middle part of the connecting pipe 14 by the second bolt 36, and the first bolt 34 is rotated to fix the shielding top block 33 to the top surface of the protective sleeve 31, and the sealing ring 12 is placed on the top surface of the connecting nozzle 11, and the connecting block 13 is inserted into the interior of the fixed tube 21, so that the sealing ring 12 is located between the connecting nozzle 11 and the connecting block 13, and the protective sleeve 31 covers the upper end of the fixed tube 21, which can protect the top surface of the fixed structure 2, so that the fixed structure 2 is not eroded by rainwater, thereby extending the service life.

[0038] The protective sleeve 31 is rotated to make the convex thread inside the protective sleeve 31 threadedly connected with the concave thread 23, and the protective sleeve 31 rotates and moves downward on the fixed cylinder 21, and the third contact surface 32 contacts the first contact surface 25 on the surface of the sliding block 24. As the protective sleeve 31 continues to descend, the sliding block 24 is pushed to slide inside the active cavity 22, and the limit slider 27 stretches the strong spring 29, and the sliding block 24 approaches the connecting pipe 14, and the second contact surface 26 contacts the inclined surface of the top surface of the connecting block 13, and presses the connecting block 13 downward, so that the connection The block 13 descends inside the fixed cylinder 21 and cooperates with the connecting nozzle 11 to squeeze the sealing ring 12, which can improve the connection sealing between the connecting nozzle 11 and the connecting block 13. At the same time, the fixing of the connecting block 13 by the sliding block 24 is achieved by the installation of the protective sleeve 31. There is no need to manually operate the sliding block 24. The operation is simple, the functionality is strong, and the use effect is better. After the protective sleeve 31 is removed, the strong spring 29 is restored, and the sliding block 24 will be reset under the action of the strong spring 29, which can release the fixing of the sliding block 24 to the connecting block 13, making the disassembly and assembly of the connecting block 13 more convenient.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A control valve with a protective structure, comprising: An operating valve body (1), wherein a connecting nozzle (11) is welded on the top surface of the operating valve body (1), a sealing ring (12) is placed on the top surface of the connecting nozzle (11), a connecting block (13) is installed on the top surface of the sealing ring (12), a connecting pipe (14) is welded on the top surface of the connecting block (13), and a control valve switch (15) is connected to the top of the connecting pipe (14), and the characteristic is that: a fixing structure (2) is installed on the top surface of the operating valve body (1), and the fixing structure (2) includes a fixing cylinder (21), and the fixing cylinder (21) is fixedly welded to the top surface of the operating valve body (1), and an active cavity (22) is opened on the surface of the fixing cylinder (21), and a concave thread is opened on the upper side of the active cavity (22). (23), a sliding block (24) is slidably installed inside the movable cavity (22), a first contact surface (25) is provided on the outer surface of the sliding block (24), a second contact surface (26) is provided on the bottom surface of the sliding block (24), a limit slider (27) is provided on the side wall of the sliding block (24), a limit guide column (28) is fixedly installed inside the movable cavity (22), a strong spring (29) is fixedly connected to the side wall of the limit slider (27), a protective structure (3) is installed on the top surface of the fixed structure (2), the protective structure (3) includes a protective sleeve (31), the bottom surface of the protective sleeve (31) is provided with a third contact surface (32), the protective sleeve (31) A shielding top block (33) is inserted on the top surface of the shielding top block (33), the top surface of the shielding top block (33) is threadedly connected to a first bolt (34), the top surface of the shielding top block (33) is welded to a connecting ear block (35), the side wall of the connecting ear block (35) is threadedly connected to a second bolt (36), the top surface of the connecting block (13) is an inclined surface, and is lower than the top surface of the active cavity (22), the upper end of the connecting pipe (14) is exposed to the top end of the fixed cylinder (21), the fixed cylinder (21) is sleeved on the outside of the connecting nozzle (11), the inner diameter of the fixed cylinder (21) is equal to the outer diameter of the connecting block (13), the active cavity (22) is provided with six groups in total, the length of the sliding block (24) is greater than the length of the active cavity (22), the The first contact surface (25) matches the third contact surface (32), the second contact surface (26) matches the inclined surface of the top surface of the connecting block (13), the limit slider (27) is slidably installed in the inner wall of the movable cavity (22), the limit guide column (28) passes through the limit slider (27), and one end of the strong spring (29) is fixedly connected to the inner wall of the movable cavity (22), the inner diameter of the protective sleeve (31) is equal to the outer diameter of the fixed cylinder (21), and the inner wall of the protective sleeve (31) is provided with a convex thread that matches the concave thread (23), the third contact surface (32) is located at the lower side of the movable cavity (22), the bottom surface of the shielding top block (33) is provided with a sealing gasket, and the shielding top block (33) is provided with two groups,The shielding top block (33) is fixed to the top surface of the protective sleeve (31) by a first bolt (34), a sealing gasket is arranged on the inner wall of the connecting ear block (35), and two groups of connecting ear blocks (35) are arranged, and the two groups of connecting ear blocks (35) are fixedly connected by a second bolt (36).

Images