CN212690960U

CN212690960U - Self-operated negative pressure regulating valve

Info

Publication number: CN212690960U
Application number: CN202021710820.7U
Authority: CN
Inventors: 何宇锋; 陈梁; 尹俊
Original assignee: Zhejiang Yipu Lubrication Equipment Manufacturing Co ltd
Current assignee: Zhejiang Yipu Lubrication Equipment Manufacturing Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-03-12
Anticipated expiration: 2030-08-17

Abstract

The utility model discloses a formula of relying on oneself negative pressure governing valve, include: valve body and actuating mechanism, the valve body includes: the valve seat is arranged in the valve body, and the valve seat is characterized by also comprising an opening and closing mechanism which is connected with the actuating mechanism to control the opening and closing of the valve body, and a support frame which is arranged on the actuating mechanism and is matched with the opening and closing mechanism; the pressure regulating precision can be improved by matching the pressure regulating spring, the pressure regulating valve rod and the diaphragm; it is achieved that the regulating pressure can be reduced from-5 Kpa to-2 Kpa. Meanwhile, the components of the lever mechanism can be adjusted according to working conditions and customer requirements, and the practicability of the valve is improved.

Description

Self-operated negative pressure regulating valve

[ technical field ] A method for producing a semiconductor device

The utility model relates to a valve field specifically indicates a formula of relying on oneself negative pressure governing valve.

[ background of the invention ]

The self-operated negative pressure regulating valve belongs to a self-operated pressure regulating valve, is a self-operated valve without any external energy source, is a valve controlled by the energy source of a medium, can work in places without electricity and gas, and is convenient and economical. In the prior art, the self-operated regulating valve has fixed regulating stroke and low regulating precision, and is mostly used as a safety valve; the negative pressure regulating valve is less, the regulating pressure is mostly-5 Kpa, the pressure is higher, and the requirement of a customer on a lower negative pressure working condition cannot be met.

[ Utility model ] content

The utility model aims at providing a formula of relying on oneself negative pressure governing valve in order to solve above problem.

In order to achieve the above object, the utility model provides a formula of relying on oneself negative pressure regulating valve as follows, include: valve body and actuating mechanism, the valve body includes: the valve seat is arranged in the valve body, and the valve seat is characterized by further comprising an opening and closing mechanism which is connected with the executing mechanism and used for controlling the opening and closing of the valve body, and a supporting frame which is arranged on the executing mechanism and matched with the opening and closing mechanism.

Further preferred is: the opening and closing mechanism installed on the actuating mechanism comprises: the valve comprises a valve core matched with the valve seat, a valve rod connected with the valve core and a lever movably connected with the valve rod, wherein one end of the lever is connected with an executing mechanism.

Further preferred is: the valve rod further comprises a valve rod A arranged at one end of the valve core and a valve rod B detachably arranged on the valve rod A, and one end of the valve rod B is connected with the lever.

Further preferred is: the lever is provided with a positioning pin, and the support frame is provided with a plurality of clamping grooves which are matched with the positioning pin and are convenient for lever positioning.

Further preferred is: actuating mechanism is including installing the lower membrane lid on the valve body and installing the last membrane lid of covering at the lower membrane, it is provided with the diaphragm clamp plate to go up the membrane lid and cover down between the membrane, install diaphragm and push rod on the diaphragm clamp plate, the push rod other end is connected with the lever, actuating mechanism still includes the pressure regulating valve rod of being connected with the diaphragm clamp plate, install spring holder and lower spring holder on the pressure regulating valve rod, it is fixed with regulating spring to go up between spring holder and the lower spring holder, it is equipped with the pressure regulating cover to go up the spring holder outward, pressure regulating cover and last membrane lid threaded connection.

Further preferred is: the upper membrane cover is provided with a vent hole, and the lower membrane cover is provided with a pressure guiding hole.

Further preferred is: and a sealing guide sleeve is arranged in the lower membrane cover.

The utility model has the advantages that:

1. the utility model adopts the valve stem and the bracket in the lever type opening and closing mechanism to quickly adjust and change the stroke, thereby facilitating the pressure adjustment; the precision of pressure regulation can be improved by matching the regulating spring, the pressure regulating valve rod and the diaphragm; it is achieved that the regulating pressure can be reduced from-5 Kpa to-2 Kpa.

2. When the stroke is adjusted, the opening and closing of the stroke control valve and the opening of the valve can be adjusted only by replacing valve rods with different lengths or screwing out a section of the valve rod A from the valve rod B or replacing one of the valve rod A and the valve rod B; therefore, the whole opening and closing mechanism does not need to be replaced and disassembled during maintenance, and the maintenance is convenient.

3. The utility model provides an air vent intercommunication air draws pressure hole junction device input negative pressure as standard pressure, according to the position and the spring compression condition of equipment negative pressure size regulation diaphragm, drives lever mechanism's displacement, realizes the function of governing valve opening size to reach the purpose of stabilizing the equipment negative pressure value.

4. The utility model discloses, adjust the size that regulating spring bore pressure through the last spring holder on adjusting the pressure regulating valve rod to thereby increase the regulation precision of valve through the combination with the diaphragm.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of an opening and closing mechanism;

FIG. 3 is a schematic view of the structure of the closure in another direction;

FIG. 4 is another schematic structural diagram of the opening and closing mechanism;

FIG. 5 is a schematic view of the valve stem B;

fig. 6 is a schematic view of the structure of the valve stem a.

Figure 1, valve body; 102. a valve seat; 103. a valve core; 2. a raising and closing mechanism; 203. a support; 204. a lever; 2041. a pin; 3. an actuator; 3011. covering with a film; 3012. a lower film cover; 3013. a membrane; 3014. a diaphragm pressing plate; 3015. a push rod; 3021. a pressure regulating valve rod; 3022. a spring seat; 3023. adjusting the spring; 3024. an upper spring seat; 3025. a pressure regulating cover; 4. a valve stem; 401. a valve stem A; 402. a valve stem B; 5. a guide sleeve; 6. a pressure guide hole; 7. and (4) a vent hole.

[ detailed description ] embodiments

The self-operated negative pressure regulating valve of the present invention will be further described with reference to embodiment 1 and accompanying fig. 1-3.

Example 1

Referring now to FIG. 1: the self-operated negative pressure regulating valve of the embodiment comprises: valve body 1 and actuating mechanism 3, valve body 1 includes: the valve seat 102 is installed inside the valve body 1, and is characterized by further comprising an opening and closing mechanism 2 connected with the actuating mechanism 3 to control the opening and closing of the valve body 1, and a support frame 203 installed on the actuating mechanism 3 and matched with the opening and closing mechanism. The adjusting stroke of the valve can be increased by the opening and closing mechanism 2 to meet the working condition of micro pressure of a customer, and the adjusting precision of the valve is increased.

Referring to fig. 1-3, the opening and closing mechanism includes: the valve comprises a valve core 103 matched with a valve seat 102, a valve rod 4 arranged at one end of the valve core 103, and a lever 204 arranged on the valve rod 4, wherein one end of the lever 204 is connected with an actuating mechanism 3, and a valve body is connected with the actuating mechanism 3 through an opening and closing mechanism 2.

Referring to fig. 1-3, a positioning pin 2041 is installed on the lever 204, the supporting frame 203 is provided with a plurality of clamping grooves 2031 adapted to the positioning pin 2041 for positioning the lever 204, and the clamping grooves at different positions correspond to different opening degrees of the valve.

Referring to fig. 1, the actuating mechanism includes a lower membrane cover 3012 mounted on the valve body 1 and an upper membrane cover 3011 mounted on the lower membrane cover 3012, a membrane pressing plate 3014 is mounted between the upper membrane cover 3011 and the lower membrane cover 3012, a membrane 3013 and a push rod 3015 are mounted on the membrane pressing plate 3014, the other end of the push rod 3015 is connected to the lever 204, the membrane 3013 is pushed to move up and down by the difference in pressure between the upper and lower membrane chambers, and the membrane pressing plate 3014 mounted on the membrane 3013 is driven to move up and down, thereby driving the push rod and the lever to move, and achieving the purpose of self-operated pressure regulation.

Referring to fig. 1, the actuator 3 further includes a pressure regulating valve rod 3021 connected to the diaphragm press plate 3014, an upper spring seat 3022 and a lower spring seat 3022 are installed on the pressure regulating valve rod 3021, a regulating spring 3023 is fixed between the upper spring seat 3024 and the lower spring seat 3022, a pressure regulating cover 3025 is arranged outside the upper spring seat 3024, the pressure regulating cover 3025 is in threaded connection with the upper diaphragm cover 3011, the pressure regulating valve rod 3021 can adjust the pressure of the regulating spring 3023 according to the use situation, the pressure regulating precision is increased, the accuracy of the valve opening is ensured, the pressure regulating cover 3025 can protect the pressure regulator 302 from the influence of dust and other factors, and the pressure regulating operation of the valve is facilitated by adopting a threaded connection mode.

Referring to fig. 1, an air vent 7 is arranged on the upper membrane cover 3011, a pressure leading hole 6 is arranged on the lower membrane cover 3012, the air vent 3011 is communicated with the atmosphere to be used as standard pressure, and the pressure leading hole 6 is connected with equipment to input negative pressure so that the valve can perform negative pressure regulation.

Referring to fig. 1, a sealing guide sleeve 5 is installed in the lower diaphragm cover 3012, and the sealing guide sleeve 5 can fix the moving direction of the valve stem 4, so as to ensure the accuracy of the opening of the valve, prevent the main valve body 1 from being in gas communication with the actuator 2, and ensure the adjustment accuracy of the valve.

The utility model discloses a theory of operation and use, this self-operated negative pressure regulator valve uses with equipment cooperation, when the negative pressure of equipment increases, diaphragm 3013 below pressure increase makes diaphragm 3013 shift up, diaphragm 3013 drives diaphragm clamp plate 3014 rebound, diaphragm clamp plate 3014 drives pressure regulating valve rod 3021 and push rod 3015 rebound, push rod 3015 drives lever 204 one end rebound, make lever 204 adjust the gear downwards on support 203 and drive valve stem B202 and move right, valve stem B202 drives valve stem A201 and moves right, valve stem A201 drives case 103 and moves right and make the valve open, to equipment tonifying qi, when equipment negative pressure was passed hours, actuating mechanism 3 and lever mechanism 2 move in the opposite direction, case 103 moves left, the valve is closed, stop to aerify to equipment, the fan that has equipment to connect is taken out, thereby reach the purpose of regulating equipment pressure size; when the pressure of the valve is set inaccurately, the valve rod 3021 of the pressure regulating valve can be adjusted, the elastic force of the adjusting spring 3023 is changed, thereby the pressure above the diaphragm 3013 is changed, and the purpose of adjusting the precision of the valve is achieved

Example 2

Referring to FIGS. 4-6: compared with the embodiment 1, the difference of the embodiment is that the structure of the opening and closing mechanism 2 is different; specifically be different from valve stem (4) still include with the valve stem A401 of being connected with case (103), can dismantle the valve stem B402 of being connected through screw thread or locating pin with valve stem A401, valve stem B402 one end is connected with lever 204, and valve stem A401 and valve stem B402 can carry out length adjustment of different degrees according to operation requirement's difference, change the stroke of valve to change the aperture size of valve, it is more convenient to adjust, because of can dismantling the regulation between valve stem A401 and the valve stem B402, thereby it is also convenient to make it maintain, if certain part of valve stem A401 and valve stem B402 kind, it is just as if one of them need be changed to the damage, and then the cost is reduced.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. A self-operated negative pressure regulator valve comprising: valve body (1) and actuating mechanism (3), valve body (1) includes: the valve seat (102) is arranged in the valve body (1), and is characterized by further comprising an opening and closing mechanism (2) which is connected with the actuating mechanism (3) and used for controlling the opening and closing of the valve body (1), and a support frame (203) which is arranged on the actuating mechanism (3) and matched with the opening and closing mechanism.

2. The self-operated negative pressure regulator valve according to claim 1, wherein: the opening and closing mechanism arranged on the actuating mechanism (3) comprises: the valve core (103) is matched with the valve seat (102), the valve rod (4) is connected with the valve core (103), the lever (204) is movably connected with the valve rod (4), and one end of the lever (204) is connected with the executing mechanism (3).

3. The self-operated negative pressure regulator valve according to claim 2, wherein: the valve rod (4) further comprises a valve rod A (401) arranged at one end of the valve core (103) and a valve rod B (402) detachably arranged on the valve rod A (401), and one end of the valve rod B (402) is connected with the lever (204).

4. The self-operated negative pressure regulator valve according to claim 3, wherein: install locating pin (2041) on lever (204), support frame (203) are equipped with a plurality of and locating pin (2041) looks adaptation be convenient for draw-in groove (2031) that lever (204) was fixed a position.

5. The self-operated negative pressure regulator valve according to claim 2, wherein: actuating mechanism (3) are including lower membrane lid (3012) and last membrane lid (3011) of installation on membrane lid (3012) down, go up membrane lid (3011) and be provided with diaphragm clamp plate (3014) down between membrane lid (3012), install diaphragm (3013) and push rod (3015) on diaphragm clamp plate (3014), push rod (3015) other end is connected with lever (204), actuating mechanism (3) still include pressure regulating valve rod (3021) of being connected with diaphragm clamp plate (3014), install spring holder (3024) and lower spring holder (3022) on pressure regulating valve rod (3021), it is fixed with between spring holder (3024) and lower spring holder (3022) to go up spring holder (3024) and be equipped with pressure regulating cover (3025) outward, pressure regulating cover (3025) and last membrane lid (3011) threaded connection.

6. The self-operated negative pressure regulator valve according to claim 5, wherein: the upper membrane cover (3011) is provided with a vent hole (7), and the lower membrane cover (3012) is provided with a pressure guide hole (6).

7. The self-operated negative pressure regulator valve according to claim 6, wherein: and a sealing guide sleeve (5) is arranged in the lower membrane cover (3012).