Instrument valve with pressure relief structure

Abstract

The utility model discloses an instrument valve with a pressure relief structure, which comprises a valve body, an instrument, a valve body switch and a pressure relief auxiliary component, the instrument is fixedly arranged at one end of the valve body, and the valve body switch is movably arranged at one end of the valve body; opening and closing of the blocking piece are controlled through the handle, the instrument works when measurement is needed, the blocking piece is closed to protect the instrument when work is not needed, and damage to the instrument due to long-time pressure is prevented. The water pressure can be buffered through the spring and the buffer plate, so that the inaccuracy and damage of the instrument caused by excessive instantaneous pressure are prevented; the sealing performance of the valve body is guaranteed through the sealing rubber and the rubber sleeve, and the bad influence on actual work due to the poor sealing performance of the valve body is prevented; through the cooperation of the positioning groove, the positioning rod, the closing positioning hole and the opening positioning hole, the control rod can control the opening and closing of the blocking piece, and meanwhile, the blocking piece can be fixed and prevented from being burst open due to overlarge water pressure and affecting the normal work of the instrument.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument valves, in particular to an instrument valve with a pressure relief structure. Background Art

[0002] The instrument valve is a pipeline accessory; it is a device used to change the cross-section of the passage and the flow direction of the medium and control the flow of the conveying medium; the sealing performance of the instrument valve refers to the ability of the various sealing parts of the instrument valve to prevent the leakage of the medium, which is the most important technical performance indicator of the instrument valve; there are three sealing parts of the instrument valve: the contact between the opening and closing parts and the two sealing surfaces of the valve seat; the matching part of the packing, the valve stem and the stuffing box; the connection between the valve body and the valve cover; the leakage in the former is called internal leakage, which is usually referred to as loose sealing, which will affect the ability of the instrument valve to cut off the medium; for cut-off valves, internal leakage is not allowed; the leakage in the latter two parts is called external leakage, that is, the medium leaks from the inside of the valve to the outside of the valve; external leakage will cause material loss, pollute the environment, and even cause accidents in serious cases; for flammable, explosive, toxic or radioactive media, external leakage is even more unacceptable, so the instrument valve must have reliable sealing performance.

[0003] In the prior art, the pressure measuring function of the instrument lacks a separate control switch. Under long-term pressure, the instrument is prone to inaccuracy or damage, and pressure relief sealing treatment is required to reduce the working intensity of the instrument.

[0004] To this end, the utility model proposes an instrument valve with a pressure relief structure for solving the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an instrument valve with a pressure relief structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an instrument valve with a pressure relief structure includes a valve body, an instrument, a valve body switch and a pressure relief auxiliary component, wherein the instrument is fixedly arranged at one end of the valve body, and the valve body switch is movably arranged at one end of the valve body.

[0007] Preferably, the pressure relief auxiliary component includes a control groove, an instrument measuring groove, a spring, a buffer plate, a control rod, a handle, a blocking plate, a sealing rubber, a rubber sleeve, a positioning groove, a positioning rod, a closing positioning hole and an opening positioning hole. The control groove is fixedly opened at one end of the valve body, an instrument measuring groove is fixedly opened on the inner side of the valve body, a spring is fixedly arranged at the bottom of the instrument measuring groove, a buffer plate is fixedly arranged at one end of the spring, the control rod is movably sleeved on the inner side of the control groove, a handle is fixedly arranged at one end of the control rod, a blocking plate is fixedly arranged at one end of the control rod, a sealing rubber is fixedly arranged on the side of the blocking plate, a rubber sleeve is fixedly sleeved on the outer side of the control rod, a positioning groove is fixedly opened at one end of the handle, a positioning rod is movably sleeved on the inner side of the positioning groove, a closing positioning hole is fixedly opened at one end of the valve body, and an opening positioning hole is fixedly opened at one end of the valve body.

[0008] Preferably, the control slot and the control rod are arranged at corresponding positions, and the two are adapted to be movably connected.

[0009] Preferably, one end of the spring is fixedly arranged at the bottom end of the instrument measuring slot, and the other end of the spring is fixedly arranged at one end of the buffer sheet.

[0010] Preferably, the blocking sheet and the sealing rubber are arranged at corresponding positions, the two are adapted to be fixedly connected, and the rubber sleeve and the control rod are also adapted to be fixedly connected.

[0011] Preferably, the positioning rod and the closing positioning hole and the opening positioning hole are arranged at corresponding positions and are adapted to be movably engaged.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By inserting and installing the control rod in the control groove and then controlling the opening and closing of the blocking piece with the handle, the instrument can work when measurement is needed, and the blocking piece can be closed to protect the instrument when it is not needed, thereby preventing the instrument from being damaged by long-term pressure; the water pressure can be buffered by the spring and the buffer piece to prevent the instantaneous excessive pressure from causing inaccuracy and damage to the instrument; the sealing of the valve body is ensured by the sealing rubber and the rubber sleeve to prevent the poor sealing of the valve body from having a bad influence on the actual work; through the coordination of the positioning groove, the positioning rod, the closing positioning hole and the opening positioning hole, the control rod can control the switch of the blocking piece while fixing it to prevent the water pressure from being too high to wash the blocking piece open and affect the normal operation of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is an exploded view of the measuring slot of the instrument of the utility model;

[0016] Figure 3 This is an exploded view of the handle of the utility model.

[0017] In the figure: valve body 1, instrument 2, valve body switch 3, control slot 4, instrument measuring slot 5, spring 6, buffer sheet 7, control rod 8, handle 9, blocking sheet 10, sealing rubber 11, rubber sleeve 12, positioning slot 13, positioning rod 14, closing positioning hole 15, opening positioning hole 16. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model are described clearly and completely below. The embodiments of the utility model and all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 3An instrument valve with a pressure relief structure, the utility model provides a technical solution: an instrument valve with a pressure relief structure comprises a valve body 1, an instrument 2, a valve body switch 3 and a pressure relief auxiliary component, one end of the valve body 1 is fixedly provided with the instrument 2, and one end of the valve body 1 is movably provided with the valve body switch 3; a control groove 4 in the pressure relief auxiliary component is fixedly opened at one end of the valve body 1, an instrument measuring groove 5 is fixedly opened on the inner side of the valve body 1, a spring 6 is fixedly provided at the bottom of the instrument measuring groove 5, one end of the spring 6 is fixedly provided with a buffer sheet 7, one end of the spring 6 is fixedly provided at the bottom of the instrument measuring groove 5, and the other end of the spring 6 is fixedly provided at the buffer The spring 6 and the buffer sheet 7 are arranged in the measuring groove 5 of the instrument to buffer the water pressure and prevent the instantaneous pressure from being too large, which may cause inaccuracy and damage to the instrument 2; the control rod 8 is movably sleeved and arranged on the inner side of the control groove 4, and the control groove 4 and the control rod 8 are arranged in corresponding positions, and the two are adapted to be movably connected; a handle 9 is fixedly arranged at one end of the control rod 8, and a blocking sheet 10 is fixedly arranged at one end of the control rod 8. The control rod 8 is inserted and installed in the control groove 4, and the opening and closing of the blocking sheet 10 is controlled by the handle 9, so that the instrument 2 works when it needs to be measured, and the blocking sheet 10 is closed when it is not needed to protect the instrument 2. To prevent the damage of the instrument 2 caused by long-term pressure; a sealing rubber 11 is fixedly provided on the side of the blocking piece 10, and a rubber sleeve 12 is fixedly provided on the outer side of the control rod 8. The blocking piece 10 and the sealing rubber 11 are set at corresponding positions, and the two are adapted and fixedly connected, and the rubber sleeve 12 and the control rod 8 are also adapted and fixedly connected; under the joint action of the sealing rubber 11 and the rubber sleeve 12, the control groove 4 and the instrument measuring groove 5 are sealed to ensure the sealing of the valve body 1 and prevent the poor sealing of the valve body 1 from having a bad influence on the actual work; a positioning groove 13 is fixedly provided at one end of the handle 9 for positioning A positioning rod 14 is movably sleeved on the inner side of the groove 13, a closing positioning hole 15 is fixedly opened at one end of the valve body 1, and an opening positioning hole 16 is fixedly opened at one end of the valve body 1; the positioning rod 14 and the closing positioning hole 15 and the opening positioning hole 16 are arranged in corresponding positions and are movably engaged with each other; the positioning rod 14 is movably engaged and fixed in the positioning groove 13, and after opening and closing the blocking piece 10, the positioning rod 14 is inserted into the closing positioning hole 15 or the opening positioning hole 16, so that the control rod 8 can control the switch of the blocking piece 10 while being fixed to prevent excessive water pressure from flushing the blocking piece 10 and affecting the normal operation of the instrument 2.

[0020] Working principle: In actual use, the control rod 8 is inserted and installed in the control groove 4, and the opening and closing of the blocking piece 10 is controlled by the handle 9, so that the instrument 2 works when measurement is required, and the blocking piece 10 is closed when it is not required to protect the instrument 2 to prevent long-term pressure from causing damage to the instrument 2; the spring 6 and the buffer sheet 7 are arranged in the instrument measuring groove 5 to buffer the water pressure to prevent the instantaneous excessive pressure from causing inaccuracy and damage to the instrument 2; under the joint action of the sealing rubber 11 and the rubber sleeve 12, the control groove 4 and the instrument measuring groove 5 are sealed to ensure the sealing of the valve body 1 to prevent the poor sealing of the valve body 1 from having a bad effect on the actual work; the positioning rod 14 is movably clamped and fixed in the positioning groove 13, and after opening and closing the blocking piece 10, the positioning rod 14 is inserted into the closing positioning hole 15 or the opening positioning hole 16, so that the control rod 8 can control the switch of the blocking piece 10 while fixing it to prevent the blocking piece 10 from being flushed open by excessive water pressure and affecting the normal operation of the instrument 2.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An instrument valve with a pressure relief structure, characterized in that: The invention comprises a valve body (1), a meter (2), a valve body switch (3) and a pressure relief auxiliary component, wherein the meter (2) is fixedly provided at one end of the valve body (1), the valve body switch (3) is movably provided at one end of the valve body (1), and the pressure relief auxiliary component comprises a control groove (4), a meter measuring groove (5), a spring (6), a buffer sheet (7), a control rod (8), a handle (9), a blocking sheet (10), a sealing rubber (11), a rubber sleeve (12), a positioning groove (13), a positioning rod (14), a closing positioning hole (15) and an opening positioning hole (16), wherein the control groove (4) is fixedly provided at one end of the valve body (1), the inner side of the valve body (1) is fixedly provided with a meter measuring groove (5), and the bottom of the meter measuring groove (5) is fixedly provided with a spring. A spring (6) is fixedly provided with a buffer sheet (7) at one end of the spring (6), the control rod (8) is movably sleeved inside the control groove (4), a handle (9) is fixedly provided at one end of the control rod (8), a blocking sheet (10) is fixedly provided at one end of the control rod (8), a sealing rubber (11) is fixedly provided on the side of the blocking sheet (10), a rubber sleeve (12) is fixedly sleeved on the outer side of the control rod (8), a positioning groove (13) is fixedly provided at one end of the handle (9), a positioning rod (14) is movably sleeved inside the positioning groove (13), a closing positioning hole (15) is fixedly provided at one end of the valve body (1), and an opening positioning hole (16) is fixedly provided at one end of the valve body (1).

2. The instrument valve with a pressure relief structure according to claim 1, characterized in that: The control groove (4) and the control rod (8) are arranged at corresponding positions, and the two are adapted to be movably connected.

3. The instrument valve with a pressure relief structure according to claim 1, characterized in that: One end of the spring (6) is fixedly arranged at the bottom end of the instrument measuring slot (5), and the other end of the spring (6) is fixedly arranged at one end of the buffer sheet (7).

4. The instrument valve with a pressure relief structure according to claim 1, characterized in that: The blocking sheet (10) and the sealing rubber (11) are arranged at corresponding positions, and the two are adapted to be fixedly connected, and the rubber sleeve (12) and the control rod (8) are also adapted to be fixedly connected.

5. The instrument valve with a pressure relief structure according to claim 1, characterized in that: The positioning rod (14) and the closing positioning hole (15) and the opening positioning hole (16) are arranged at corresponding positions and are adapted to be movably engaged.

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