CN214404160U

CN214404160U - Two-way plug-in type proportional throttle valve

Info

Publication number: CN214404160U
Application number: CN202120345985.7U
Authority: CN
Inventors: 李文钧
Original assignee: Ji'nan Boer Power Equipment Co ltd
Current assignee: Ji'nan Boer Power Equipment Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-10-15
Anticipated expiration: 2031-02-05

Abstract

The utility model relates to a two-way cartridge formula proportion choke valve, belong to the technical field of proportion choke valve, it includes the valve body, the chamber of sliding has been seted up in the valve body, the work hydraulic fluid port A with the chamber intercommunication that slides is seted up to the one end of valve body, the work hydraulic fluid port B with the chamber intercommunication that slides is seted up to the both sides of valve body, the intracavity that slides has the case, the inherent lug of case, the lug will slide the chamber and divide into first cavity and second cavity, case cavity sets up and both ends communicate with work hydraulic fluid port A and first cavity respectively, the control hydraulic fluid port has been seted up on the valve body, control hydraulic fluid port and second cavity intercommunication, the cover is equipped with the case spring on the case, the intracavity that slides is provided with the briquetting, the one end that the case was kept away from to the case spring sets up on the briquetting. The thrust applied to the valve core can be calculated according to the amount of the control oil entering the second chamber and the volume of the second chamber, and then the deformation amount of the valve core spring is calculated according to Hooke's law, so that the displacement of the valve core can be known. Therefore, the method and the device have the effect of reducing the production cost of enterprises.

Description

Two-way plug-in type proportional throttle valve

Technical Field

The application relates to the field of proportional throttle valves, in particular to a two-way plug-in type proportional throttle valve.

Background

The existing throttle valve is a valve for controlling fluid flow by changing the throttle section or the throttle length, and the proportional throttle valve is a throttle valve controlled according to proportion and is a non-stepless throttle valve, and the proportional valve control is added on the basis of the throttle valve.

The utility model discloses a chinese utility model with publication number CN204312432U, bulletin date 20150506 discloses a two-way plug-in proportional throttle valve, which comprises a pilot valve and a main valve two-stage structure, wherein the main valve comprises a main valve body, a main valve core, a valve housing, an end cover, a main valve core end cover and a linear displacement sensor, the main valve body is provided with a main valve hole, an oil inlet P, a working oil port a, a working oil port B, an oil return port T, a control oil port X and a control oil port Y, the oil inlet P is communicated with the control oil port X, the oil return port T is communicated with the control oil port Y, the end cover is installed at one end of the main valve hole, the other end is provided with the valve housing, the main valve core is installed in the main valve hole and the valve housing, two isolated chambers are formed between the main valve core and the main valve body, the two chambers are respectively communicated with the working oil port a and the working oil port B of the pilot valve, the end cover is provided with the linear displacement sensor, a displacement detection rod of the linear displacement sensor penetrates through the end cover and then is connected with the end cover of the main valve core, and the end cover of the main valve core is arranged on the main valve core. After oil is introduced into the cavity from the control oil port X and the control oil port Y, the main valve core controls the movement of the main valve core, after the main valve core is separated from the working oil port A, the working oil enters the working oil port B from the working oil port A, and the linear displacement sensor detects the movement distance of the main valve core, so that the size of the opening of the working oil port A is known.

In view of the above-mentioned related technologies, the inventor believes that the cost of the two-way plug-in proportional throttle valve in the production of an enterprise is high because a linear displacement sensor is used for detecting the moving distance of the main valve core, and the price of the linear displacement sensor is high.

SUMMERY OF THE UTILITY MODEL

In order to reduce the production cost of enterprises, the application provides a two-way plug-in type proportional throttle valve.

The application provides a two-way cartridge formula proportion choke valve adopts following technical scheme:

the two-way plug-in type proportional throttle valve comprises a valve body, wherein a sliding cavity is formed in the valve body, a working oil port A communicated with the sliding cavity is formed in one end of the valve body, a working oil port B communicated with the sliding cavity is formed in the two sides of the valve body, a valve core slides in the sliding cavity, a convex block is fixed on the valve core, the sliding cavity is divided into a first cavity and a second cavity by the convex block, the valve core is hollow, two ends of the valve core are respectively communicated with the working oil port A and the first cavity, a control oil port is formed in the valve body, the control oil port is communicated with the second cavity, a valve core spring is sleeved on the valve core, a pressing block is arranged in the sliding cavity, and one end, far away from the valve core, of the valve core spring is arranged on the pressing block.

Through adopting above-mentioned technical scheme, in operation, hydraulic oil gets into work hydraulic fluid port A, partly can get into first cavity through the case in, then add control hydraulic oil to the control hydraulic fluid port in, control hydraulic oil gets into in the second cavity, the valve core is more and more can be driven to the department of keeping away from work hydraulic fluid port A to slide when the hydraulic oil in the second cavity, the case spring is compressed, then hydraulic oil gets into in the work hydraulic fluid port B from work hydraulic fluid port A, thereby realize work hydraulic fluid port A and work hydraulic fluid port B's UNICOM, because the thrust that the case received can be calculated according to the volume that gets into control hydraulic fluid port in the second cavity and second cavity, and then calculate the deformation volume of case spring according to the hooke's law, thereby can know the displacement of case, owing to adopt the case spring to replace linear displacement sensor, consequently, the cost of enterprise's production has been reduced.

Optionally, the pressing block slides in the sliding cavity, a driving part is arranged on the valve body, and the driving part is used for driving the pressing block to slide.

Through adopting above-mentioned technical scheme, set up the purpose that driver part drive briquetting slided, compress the case spring through the briquetting, change the initial compression volume of case spring to make under the unchangeable circumstances of the thrust of the control oil that the case received, adapt to different elasticity size springs.

Optionally, the driving part includes a guide rod and a boosting block, the guide rod is in threaded connection with the inner wall of the sliding cavity, the boosting block is coaxially fixed on the guide rod, the boosting block is arranged on one side of the pressing block far away from the working oil port a, the pressing block is coaxially sleeved on the guide rod, and one end of the valve core spring far away from the valve core is sleeved on the guide rod and abutted against the pressing block.

Through adopting above-mentioned technical scheme, rotate the guide bar, the guide bar is to being close to case department removal to make the boosting piece promote the briquetting and slide, thereby make the briquetting compress valve core spring.

Optionally, the driving assembly comprises a threaded rod, the threaded rod is coaxially and rotatably connected with the sliding cavity, the pressing block is in threaded connection with the threaded rod, and one end, far away from the valve core, of the valve core spring is coaxially sleeved on the threaded rod and is abutted to the pressing block.

Through adopting above-mentioned technical scheme, rotate the threaded rod, the threaded rod drive briquetting moves to being close to case department to make the briquetting compression case spring.

Optionally, the pressing block is provided with copper alloy polytetrafluoroethylene, and the copper alloy polytetrafluoroethylene is abutted to the inner wall of the sliding cavity.

By adopting the technical scheme, the copper alloy polytetrafluoroethylene is arranged, so that the pressing block and the inner wall of the sliding cavity are sealed, and meanwhile, the friction force between the pressing block and the inner wall of the sliding cavity can be reduced, and the lubricating effect is achieved.

Optionally, elastic first latch is fixed along its circumference in the briquetting outer wall, the copper alloy polytetrafluoroethylene inner wall is fixed with the second latch of spring along its circumference, but second latch joint is between first latch.

Through adopting above-mentioned technical scheme, the purpose that sets up first latch and second latch is for install more firmly between copper alloy polytetrafluoroethylene and the briquetting.

Optionally, the valve body is provided with a disassembly cavity, the disassembly cavity is communicated with the sliding cavity, the disassembly cavity is internally and coaxially provided with a thread block capable of forming two semicircular shapes, the thread block is coaxially sleeved with a filling block capable of forming two semicircular shapes, and the filling block is abutted to the inner wall of the disassembly cavity.

Through adopting above-mentioned technical scheme, when changing the case spring, will fill the piece and take out, then the screw thread piece that slides for the screw thread piece is kept away from the guide bar, then takes out the screw thread piece again, thereby makes guide bar, briquetting and case spring take out from the intracavity that slides.

Optionally, the valve body is in threaded connection with a locking bolt, the locking bolt is perpendicular to the axis of the guide rod, and the locking bolt is in threaded connection with the filling block and the threaded block.

Through adopting above-mentioned technical scheme, the purpose of setting up locking bolt is, further will fill up piece and screw thread piece locking.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the valve core spring and the pressing block are arranged, when more and more hydraulic oil in the second cavity drives the valve core to slide towards a position far away from the working oil port A, the valve core spring is compressed, then the hydraulic oil enters the working oil port B from the working oil port A, so that the communication between the working oil port A and the working oil port B is realized, the thrust force borne by the valve core can be calculated according to the control oil amount entering the second cavity and the volume of the second cavity, the deformation quantity of the valve core spring is calculated according to the hooke's law, the displacement of the valve core can be known, and the linear displacement sensor is replaced by the valve core spring, so that the production cost of enterprises is reduced;

2. the guide rod is in threaded connection with the inner wall of the sliding cavity, and the boosting block is arranged, so that the guide rod is rotated to move to a position close to the valve core, the boosting block pushes the pressing block to slide, and the pressing block compresses the valve core spring;

3. the purpose of setting up dismantlement chamber, screw block and filling the piece is, when changing the case spring, will fill the piece and take out, then the screw block that slides for the screw block is kept away from the guide bar, then takes out the screw block again, thereby makes guide bar, briquetting and case spring take out from the intracavity that slides.

Drawings

Fig. 1 is a sectional view of the entire structure of embodiment 1 of the present application.

FIG. 2 is a sectional view showing the whole structure of embodiment 2.

Fig. 3 is an exploded view showing a connection structure between copper alloy polytetrafluoroethylene and a compact.

Description of reference numerals: 100. a valve body; 111. A working oil port A; 112. a working oil port B; 113. a valve core; 114. a bump; 115. a first chamber; 116. a second chamber; 117. a control oil port; 120. a spool spring; 121. briquetting; 122. a support block; 130. a drive member; 131. a guide bar; 132. a boosting block; 133. a threaded rod; 134. copper alloy polytetrafluoroethylene; 135. a first latch; 136. a second latch; 137. a ball bearing; 140. disassembling the cavity; 141. filling and supplementing blocks; 142. a thread block; 143. locking the bolt; 150. positioning blocks; 160. and (6) positioning a groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses two-way plug-in type proportional throttle valve.

Example 1

Referring to fig. 1, the two-way plug-in type proportional throttle valve comprises a valve body 100, wherein the valve body 100 comprises a valve sleeve 1001, a first valve body 1002 and a second valve body 1003, the valve sleeve 1001 is in threaded connection with the first valve body 1002, and the second valve body 1003 is in threaded connection with the first valve body 1002. A gap is left between the second valve body 1003 and the first valve body 1002. A first sliding cavity 1101 is formed in the first valve body 1002, a second sliding cavity 1102 is formed in the second valve body 1003, a third sliding cavity 1103 is formed in the valve sleeve 1001, and the first sliding cavity 1101, the second sliding cavity 1102 and the third sliding cavity 1103 are communicated to form a sliding cavity.

The lower end of the valve housing 1001 is provided with a working oil port a111 communicated with the third sliding cavity 1103, and both sides of the valve housing 1001 close to the working oil port a111 are provided with a working oil port B112 communicated with the third sliding cavity 1103. A spool 113 slides in the slide chamber 110. The spool 113 has a stepped shape at an end of the spool 113 remote from the working port a111, thereby dividing the entire slide movement chamber into a first chamber 115 and a second chamber 116. The valve core 113 is hollow, and both ends of the valve core are respectively communicated with the working oil port a111 and the first chamber 115. The valve body 100 is provided with a control port 117, and the control port 117 is communicated with the second chamber 116. A supporting block 122 is coaxially welded on the valve core 113, a valve core spring 120 is coaxially sleeved on the valve core 113, a pressing block 121 is arranged in the sliding cavity 110, one end of the valve core spring 120 is abutted against the supporting block 122, and the other end is abutted against the pressing block 121.

In order to change the initial compression amount of the spool spring 120 so as to adapt to springs with different elastic forces under the condition that the thrust of the control oil received by the spool 113 is not changed, the valve body 100 is provided with the driving member 130 so that the pressing piece 121 slides in the second sliding chamber 1102. The driving member 130 includes a guide rod 131, and the guide rod 131 is threadedly coupled to an inner wall of the third sliding chamber 1103. An assist block 132 is coaxially welded to the guide rod 131. The boosting block 132 is located on the side of the pressure block 121 away from the valve core 113. The pressing block 121 is coaxially sleeved on the guide rod 131, and one end of the valve core spring 120, which is far away from the valve core 113, is sleeved on the guide rod 131 and abuts against the pressing block 121.

In order to facilitate replacement of the valve core spring 120, a detaching cavity 140 is formed in the second valve body 1003, and the detaching cavity 140 communicates with the second cavity 1102. Two semicircular thread blocks 142 capable of forming a circle are coaxially arranged in the disassembling cavity 140, two semicircular filling blocks 141 capable of forming a circle are coaxially sleeved on the thread blocks 142, and the filling blocks 141 are abutted to the inner wall of the disassembling cavity 140. The filling block 141 is welded with a positioning block 150, the second valve body 1003 is provided with a positioning groove 160, and the positioning block 150 can be clamped in the positioning groove 160. A locking bolt 143 is screwed to the valve body 100, the locking bolt 143 is perpendicular to the axis of the guide rod 131, and the locking bolt 143 is screwed to the filling block 141 and the screw block 142 to further lock the filling block 141 and the screw block 142. When the spring is disassembled, the locking bolt 143 is unscrewed, the filling block 141 is pulled out, the screw block 142 is slid, the screw block 142 is far away from the guide rod 131, and then the screw block 142 is taken out, so that the guide rod 131, the pressing block 121 and the valve core spring 120 are taken out.

The implementation principle of the two-way plug-in type proportional throttle valve in the embodiment of the application is as follows: during operation, hydraulic oil enters the working oil port a111, a part of the hydraulic oil enters the first chamber 115 through the valve core 113, then control hydraulic oil is added into the control oil port 117, the control hydraulic oil enters the second chamber 116, when the hydraulic oil in the second chamber 116 increasingly drives the valve core 113 to slide away from the working oil port a111, the valve core spring 120 is compressed, and then the hydraulic oil enters the working oil port B112 from the working oil port a111, so that the working oil port a111 and the working oil port B112 are communicated.

Example 2

Referring to fig. 2, the difference from embodiment 1 is in the difference of the driving member 130 and the spool spring 120 is not detachable. The driving part 130 comprises a threaded rod 133 and a ball bearing 137, the threaded rod 133 is inserted into the sliding cavity 110, the outer ring of the ball bearing 137 is fixed on the valve body 100, and the inner ring is fixedly connected with the threaded rod 133. The pressing block 121 is in threaded connection with the threaded rod 133, two ends of the pressing block 121 are in sealing sliding connection with the sliding cavity 110, and one end, far away from the valve core 113, of the valve core spring 120 is coaxially sleeved on the threaded rod 133 and abutted to the pressing block 121.

Referring to fig. 3, in order to seal the pressing block 121 and the inner wall of the sliding cavity 110, first elastic latch 135 is bonded to the outer wall of the pressing block 121 along the circumferential direction thereof, a copper alloy polytetrafluoroethylene 134 is coaxially sleeved on the pressing block 121, second elastic latch 136 is bonded to the inner wall of the copper alloy polytetrafluoroethylene 134 along the circumferential direction thereof, and the second latch 136 can be clamped between the first latch 135.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a two-way cartridge formula proportion choke valve which characterized in that: the valve comprises a valve body (100), a sliding cavity is formed in the valve body (100), a working oil port A (111) communicated with the sliding cavity is formed in one end of the valve body (100), a working oil port B (112) communicated with the sliding cavity is formed in two sides of the valve body (100), a valve core (113) slides in the sliding cavity, a convex block (114) is fixed on the valve core (113), the sliding cavity (110) is divided into a first cavity (115) and a second cavity (116) by the convex block (114), the valve core (113) is arranged in a hollow mode, two ends of the valve core are respectively communicated with the working oil port A (111) and the first cavity (115), a control oil port (117) is formed in the valve body (100), the control oil port (117) is communicated with the second cavity (116), a valve core spring (120) is sleeved on the valve core (113), and a pressing block (121) is arranged in the sliding cavity (110), one end of the valve core spring (120) far away from the valve core (113) is arranged on the pressing block (121).

2. The two-way plug-in proportional throttle valve of claim 1, wherein: the pressing block (121) slides in the sliding cavity, a driving part (130) is arranged on the valve body (100), and the driving part (130) is used for driving the pressing block (121) to slide.

3. The two-way plug-in proportional throttle valve of claim 2, wherein: the driving part (130) comprises a guide rod (131) and a boosting block (132), the guide rod (131) is in threaded connection with the inner wall of the sliding cavity (110), the boosting block (132) is coaxially fixed on the guide rod (131), the boosting block (132) is arranged on one side, away from the working oil port A (111), of the pressing block (121), the pressing block (121) is coaxially sleeved on the guide rod (131), and one end, away from the valve core (113), of the valve core spring (120) is sleeved on the guide rod (131) and abutted to the pressing block (121).

4. The two-way plug-in proportional throttle valve of claim 2, wherein: the driving part (130) comprises a threaded rod (133), the threaded rod (133) is coaxially and rotatably connected with the sliding cavity, the pressing block (121) is connected with the threaded rod (133) in a threaded mode, and one end, far away from the valve core (113), of the valve core spring (120) is coaxially sleeved on the threaded rod (133) and is abutted to the pressing block (121).

5. The two-way plug-in proportional throttle valve of claim 4, wherein: the pressing block (121) is provided with copper alloy polytetrafluoroethylene (134), and the copper alloy polytetrafluoroethylene (134) is abutted to the inner wall of the sliding cavity (110).

6. The two-way plug-in proportional throttle valve of claim 5, wherein: briquetting (121) outer wall is evenly fixed with elastic first latch (135) along its circumference, copper alloy polytetrafluoroethylene (134) inner wall evenly is fixed with second latch (136) of spring along its circumference, but second latch (136) joint is between first latch (135).

7. The two-way plug-in proportional throttle valve of claim 3, wherein: the valve body (100) is provided with a disassembly cavity (140), the disassembly cavity (140) is communicated with a sliding cavity (110), a thread block (142) which can form two semicircular shapes is coaxially placed in the disassembly cavity (140), the thread block (142) is coaxially sleeved with a filling block (141) which can form two semicircular shapes, and the filling block (141) is abutted to the inner wall of the disassembly cavity (140).

8. The two-way plug-in proportional throttle valve of claim 7, wherein: the valve body (100) is in threaded connection with a locking bolt (143), the locking bolt (143) is perpendicular to the axis of the guide rod (131), and the locking bolt (143) is in threaded connection with the filling block (141) and the thread block (142).