Internal control type direct-acting sequence valve

Abstract

The utility model provides an internal control type direct-acting sequence valve, and relates to the technical field of hydraulic valves. The technical problem of the utility model is to provide an internal control type direct-acting sequence valve capable of measuring pressure. An internal control type direct-acting sequence valve comprises a valve body, an installation base, an end cover and a valve element, the end cover is installed on one side of the valve body in an embedded mode, the installation base is installed on the other side of the valve body, a liquid inlet and a liquid outlet are formed in the valve body, a first hydraulic cavity is formed in the valve body, and the liquid inlet and the liquid outlet are communicated through the first hydraulic cavity. A second hydraulic cavity is formed between the valve body and the end cover, and a valve element is arranged in the first hydraulic cavity of the valve body in a sliding mode. The sliding plate is pushed to slide upwards along the sliding groove through hydraulic pressure of liquid, at the moment, the second elastic piece is stressed to be compressed and deformed, the second elastic piece applies elastic pressure to the pressure sensing module, the pressure sensing module feeds back the pressure to the pressure gauge for pressure measurement, and the effect of measuring the pressure of the liquid is achieved.

Description

Technical Field

[0001] The utility model provides an internally controlled direct-acting sequence valve, which relates to the technical field of hydraulic valves. Background Art

[0002] A sequence valve is a valve that controls the action sequence of actuators according to the pressure of the circuits in a system with more than two branch circuits. The valve can also be used as a unloading valve and a back pressure valve. When the pressure oil enters from the inlet, it flows to the bottom of the control piston through the hole in the valve body. When the liquid pressure acting on the control piston can overcome the spring force on the valve core, the valve core moves up, allowing the oil to flow out through the outlet.

[0003] The patent with the patent authorization announcement number CN218467954U discloses a direct-acting sequence valve with a limit function. The patent makes it easier for users to install the spring seat by cooperating with the card rack 1, the ball and the reset spring. Through the cooperation of the gear 2 and the card rack 2, when the spring seat is installed, the card rack 1 sinks, driving the lower parts to move, and the gear 1 controls the card rack 2 to move horizontally, extending the limit block 2, so that the user can install the spring seat more accurately. However, the direct-acting sequence valve provided by the patent still has shortcomings in actual use. The sequence valve cannot measure pressure during use, and the hydraulic pressure cannot be adjusted in time when the hydraulic pressure is unknown, which is inconvenient during use.

[0004] Therefore, it is necessary to provide an internally controlled direct-acting sequence valve capable of pressure measurement. Utility Model Content

[0005] In order to overcome the shortcomings of the direct-acting sequence valve provided by the existing patent that it cannot measure the hydraulic pressure, cannot adjust the hydraulic pressure in time, and is inconvenient in use, the utility model provides an internally controlled direct-acting sequence valve capable of measuring pressure.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solutions: an internally controlled direct-acting sequential valve, comprising a valve body, a mounting seat, an end cover, a valve core, a push seat and a sliding seat, an end cover is embeddedly installed on one side of the valve body, a mounting seat is installed on the other side of the valve body, a liquid inlet and a liquid outlet are provided on the valve body, a first hydraulic cavity is provided in the valve body, the first hydraulic cavity connects the liquid inlet and the liquid outlet, a second hydraulic cavity is formed between the valve body and the end cover, a valve core is slidably arranged in the first hydraulic cavity of the valve body, a push seat is fixedly connected to one end of the valve core, and the valve A sliding seat is fixedly connected to the other end of the core, a first flow chamber is jointly opened between the liquid inlet and the second hydraulic chamber, a pressure relief port is opened on the valve body, a second flow chamber is jointly opened between the pressure relief port and the liquid outlet, and also includes a sliding plate, a second elastic member, a pressure sensing module and a pressure gauge, two sliding grooves are opened on the valve body, sliding plates are jointly slidably arranged in the two sliding grooves, pressure sensing modules are installed in both sliding grooves, a second elastic member is jointly fixedly connected between the sliding plate and the two pressure sensing modules, a pressure gauge is installed on the valve body, and the pressure gauge is electrically connected to the pressure sensing module.

[0007] Preferably, a plurality of sealing grooves are provided on the pushing seat and the sliding seat.

[0008] Preferably, it also includes a top block fixedly connected to the sliding seat, a threaded shrink sleeve fixedly connected to the mounting seat, a guide rod slidably arranged on the threaded shrink sleeve and the mounting seat, an adjusting nut threadedly arranged on the threaded shrink sleeve, a piston plate slidably arranged in the mounting seat, a first elastic member fixedly connected between the piston plate and the guide rod, and the piston plate is in contact and fit with the top block.

[0009] Preferably, it also includes an installation guide sleeve embedded in the liquid inlet, and a plurality of activated carbon nets are installed in the installation guide sleeve.

[0010] Preferably, a sealing gasket is installed on the sliding plate.

[0011] Preferably, a screw plug is threadedly arranged on the pressure relief port.

[0012] Preferably, a guide hole is provided on the push seat.

[0013] Compared with the prior art, the direct-acting sequential valve provided by the embodiment of the utility model has the following advantages: 1. The sliding plate is pushed upward along the slide groove by liquid hydraulic pressure. At this time, the second elastic member is compressed and deformed by force, and the second elastic member applies elastic pressure to the pressure sensing module. The pressure sensing module feeds back the pressure to the pressure measuring gauge for pressure measurement, thereby achieving the effect of measuring the pressure of the liquid.

[0014] 2. Turn the adjusting nut to disengage it from the threaded shrink sleeve, and then push the guide rod to slide in the mounting seat so that the first elastic member is compressed and deformed. A certain initial force is applied to the piston plate through the first elastic member, and then the adjusting nut is fixed to the threaded shrink sleeve through threads, and the guide rod is clamped and fixed by the threaded shrink sleeve to achieve the desired effect of adjusting and pushing the piston plate.

[0015] 3. The activated carbon net can clean and filter the impurities in the liquid, so as to achieve the effect of cleaning the liquid entering the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the valve body, valve core and first elastic member of the utility model;

[0018] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the end cover, valve core and push seat of the utility model;

[0019] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the guide rod, the adjusting nut and the thread shrink sleeve of the utility model;

[0020] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of the valve body, installation guide sleeve and activated carbon net of the utility model;

[0021] Figure 6 It is a three-dimensional cross-sectional structural schematic diagram of the sliding plate, the second elastic member and the pressure gauge of the utility model;

[0022] Figure 7 For this utility model Figure 6 Enlarged view of point A in the middle.

[0023] Figure markings: 1. valve body, 101. liquid inlet, 102. liquid outlet, 103. first hydraulic chamber, 104. pressure relief port, 105. first flow chamber, 106. second flow chamber, 107. second hydraulic chamber, 2. mounting seat, 3. end cover, 4. valve core, 5. push seat, 6. sliding seat, 7. top block, 8. piston plate, 9. first elastic member, 10. guide rod, 11. adjusting nut, 1101. threaded shrink sleeve, 12. mounting guide sleeve, 13. activated carbon net, 14. sliding plate, 1401. slide groove, 15. second elastic member, 1501. pressure sensing module, 16. pressure gauge, 17. sealing gasket, 18. screw plug, 19. flow guide hole. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0025] Embodiment 1: An internally controlled direct-acting sequence valve, see Figure 1-7 As shown, it includes a valve body 1, a mounting seat 2, an end cover 3, a valve core 4, a push seat 5 and a sliding seat 6. The end cover 3 is embedded on one side of the valve body 1, and the mounting seat 2 is installed on the other side of the valve body 1 by welding. A liquid inlet 101 and a liquid outlet 102 are provided on the valve body 1. A first hydraulic cavity 103 is provided in the valve body 1. The first hydraulic cavity 103 connects the liquid inlet 101 and the liquid outlet 102. A second hydraulic cavity 107 is formed between the valve body 1 and the end cover 3. A valve core 4 is slidably arranged in the first hydraulic cavity 103 of the valve body 1. The end of the valve core 4 close to the end cover 3 is fixedly connected to the push seat 5 by welding, and the other end of the valve core 4 is fixedly connected to the sliding seat 6 by welding. A plurality of sealing grooves for sleeve sealing rings are provided on the push seat 5 and the sliding seat 6, so as to facilitate the sleeve sealing ring so that the liquid does not appear. Leakage phenomenon, a first flow chamber 105 is jointly opened between the liquid inlet 101 and the second hydraulic chamber 107, a pressure relief port 104 is opened on the valve body 1, and a second flow chamber 106 is jointly opened between the pressure relief port 104 and the liquid outlet 102, and also includes a sliding plate 14, a second elastic member 15, a pressure sensing module 1501 and a pressure gauge 16, two slide grooves 1401 are opened on the valve body 1, and a sliding plate 14 for bearing pressure is slidingly arranged in the two slide grooves 1401, and pressure sensing modules 1501 for measuring hydraulic pressure are installed in the two slide grooves 1401, and the second elastic member 15 is fixedly connected between the sliding plate 14 and the two pressure sensing modules 1501 by welding, and a pressure gauge 16 is installed on the valve body 1 by bolt connection, and the pressure gauge 16 is electrically connected to the pressure sensing module 1501.

[0026] When the sequence valve is needed, first connect the oil inlet pipe and the oil outlet pipe to the liquid inlet 101 and the liquid outlet 102 respectively, and input the liquid from the liquid inlet 101 into the first hydraulic chamber 103 through the oil inlet pipe. At the same time, the liquid in the liquid inlet 101 enters the second hydraulic chamber 107 through the first flow chamber 105. The liquid in the first hydraulic chamber 103 and the second hydraulic chamber 107 respectively push the sliding seat 6 and the pushing seat 5 to slide to the side away from the end cover 3, so that the sliding seat 6 opens the liquid outlet 102. At this time, the liquid in the first hydraulic chamber 103 passes through the first flow chamber 105. The liquid enters the oil outlet pipe through the liquid outlet 102 for discharge. When the liquid pressure is too large, the liquid enters the pressure relief port 104 through the second flow chamber 106, and is discharged to the outside through the pressure relief port 104 to relieve the pressure. When the liquid enters the first hydraulic chamber 103, the liquid pushes the sliding plate 14 to slide upward along the slide groove 1401 through the hydraulic pressure. At this time, the second elastic member 15 is compressed and deformed by the force. The second elastic member 15 applies elastic pressure to the pressure sensing module 1501. The pressure sensing module 1501 feeds back the pressure to the pressure gauge 16 for pressure measurement, thereby obtaining the hydraulic value.

[0027] Embodiment 2: Based on Embodiment 1, refer to Figure 5-Figure 7 As shown, it also includes a top block 7 fixedly connected to the sliding seat 6 by welding, a threaded shrink sleeve 1101 is fixedly connected to the mounting seat 2 by welding, a guide rod 10 is slidably arranged on the threaded shrink sleeve 1101 and the mounting seat 2, an adjusting nut 11 is threadedly arranged on the threaded shrink sleeve 1101, a piston plate 8 is slidably arranged in the mounting seat 2, a first elastic member 9 is fixedly connected between the piston plate 8 and the guide rod 10 by welding, and the piston plate 8 is in contact with the top block 7.

[0028] When the hydraulic pressure in the first hydraulic chamber 103 and the second hydraulic chamber 107 reaches a certain intensity, the sliding seat 6 drives the top block 7 to slide to the side away from the end cover 3, and the sliding seat 6 pushes the piston plate 8 to slide in the mounting seat 2 through the top block 7. At this time, the first elastic member 9 is compressed and deformed by force. When the hydraulic pressure dissipates, the first elastic member 9 pushes the piston plate 8 to slide and reset; when it is necessary to adjust the predetermined hydraulic pressure of the valve opening, first rotate the adjusting nut 11 to disengage it from the threaded shrink sleeve 1101, so that the threaded shrink sleeve 1101 releases the clamping and fixing of the guide rod 10, and then pushes the guide rod 10 to slide in the mounting seat 2, so that the first elastic member 9 is compressed and deformed by force. At this time, the first elastic member 9 applies a certain initial force to the piston plate 8 against the top block 7, and then the adjusting nut 11 is fixed on the threaded shrink sleeve 1101 through threads, and the guide rod 10 is clamped and fixed by the threaded shrink sleeve 1101, so that the hydraulic pressure pushing the piston plate 8 can be adjusted.

[0029] See also Figure 5As shown, it also includes a mounting guide sleeve 12 embedded in the liquid inlet 101, and three activated carbon nets 13 for filtering impurities are installed in the mounting guide sleeve 12 by bolt connection.

[0030] When liquid is input from the liquid inlet 101 , the activated carbon net 13 can clean and filter the impurities in the liquid, thereby cleaning the liquid entering the valve body 1 .

[0031] See also Figure 6 As shown, a sealing gasket 17 is installed at the bottom of the sliding plate 14 by bonding; a screw plug 18 is threadedly arranged on the pressure relief port 104; and a guide hole 19 is opened on the push seat 5.

[0032] The sealing gasket 17 can prevent the liquid from leaking outward; the screw plug 18 can block the pressure relief port 104 when not in use; and the guide hole 19 can allow the liquid in the second hydraulic chamber 107 to quickly fill the chamber.

Claims

1. An internally controlled direct-acting sequence valve, comprising a valve body (1), a mounting seat (2), an end cover (3), a valve core (4), a push seat (5) and a sliding seat (6), wherein the end cover (3) is embeddedly mounted on one side of the valve body (1), and the mounting seat (2) is mounted on the other side of the valve body (1), a liquid inlet (101) and a liquid outlet (102) are formed on the valve body (1), a first hydraulic chamber (103) is formed in the valve body (1), the first hydraulic chamber (103) connects the liquid inlet (101) and the liquid outlet (102), and the valve body (1) and the end cover are connected. (3), a second hydraulic chamber (107) is formed between the valve body (1), a valve core (4) is slidably arranged in the first hydraulic chamber (103) of the valve body (1), a push seat (5) is fixedly connected to one end of the valve core (4), and a sliding seat (6) is fixedly connected to the other end of the valve core (4), a first flow chamber (105) is commonly provided between the liquid inlet (101) and the second hydraulic chamber (107), a pressure relief port (104) is provided on the valve body (1), and a second flow chamber (106) is commonly provided between the pressure relief port (104) and the liquid outlet (102), wherein: The valve body (1) further comprises a sliding plate (14), a second elastic member (15), a pressure sensing module (1501) and a pressure gauge (16); two sliding grooves (1401) are provided on the valve body (1); the sliding plate (14) is slidably arranged in the two sliding grooves (1401); the pressure sensing modules (1501) are installed in the two sliding grooves (1401); the sliding plate (14) and the two pressure sensing modules (1501) are fixedly connected with the second elastic member (15); the valve body (1) is installed with a pressure gauge (16); and the pressure gauge (16) is electrically connected to the pressure sensing module (1501).

2. An internally controlled direct-acting sequence valve as claimed in claim 1, characterized in that: A plurality of sealing grooves are provided on the pushing seat (5) and the sliding seat (6).

3. An internally controlled direct-acting sequence valve as claimed in claim 1, characterized in that: The invention also comprises a top block (7) fixedly connected to the sliding seat (6); a threaded shrink sleeve (1101) fixedly connected to the mounting seat (2); a guide rod (10) being slidably arranged on the threaded shrink sleeve (1101) and the mounting seat (2); an adjusting nut (11) being threadably arranged on the threaded shrink sleeve (1101); a piston plate (8) being slidably arranged in the mounting seat (2); a first elastic member (9) being fixedly connected between the piston plate (8) and the guide rod (10); and the piston plate (8) being in contact with and fitting the top block (7).

4. An internally controlled direct-acting sequence valve as claimed in claim 1, characterized in that: It also includes a mounting guide sleeve (12) embedded in the liquid inlet (101), wherein a plurality of activated carbon nets (13) are mounted in the mounting guide sleeve (12).

5. An internally controlled direct-acting sequence valve as claimed in claim 1, characterized in that: A sealing gasket (17) is mounted on the sliding plate (14).

6. An internally controlled direct-acting sequence valve as claimed in claim 1, characterized in that: A screw plug (18) is threadedly arranged on the pressure relief port (104).

7. An internally controlled direct-acting sequence valve as claimed in claim 1, characterized in that: A flow guide hole (19) is provided on the push seat (5).

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