CN212509682U - Safety valve part based on periphery structure - Google Patents

Abstract

The utility model provides a relief valve part based on limit structure belongs to valve accessory field. This relief valve part based on limit structure, including thimble and nut, the thimble is the major axis form, and the outer end of thimble has the external screw thread section, and the nut outer wall has the external screw thread, and the inner of thimble has spacing portion, has the spacing tooth that two at least intervals set up in spacing portion, and thimble outer end external screw thread section spiro union is in the nut hole. This part very big degree has strengthened thimble limiting displacement.

Description

Safety valve part based on periphery structure

Technical Field

The utility model belongs to valve accessory field relates to safety valve part based on limit structure.

Background

The safety valve is a special valve, wherein the opening and closing part is in a normally closed state under the action of external force, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value. The safety valve is mainly used for boiler, pressure container and pipeline, and its control pressure is not greater than specified value, so that it can play important role in protecting personal safety and equipment operation. The injection and safety valve must be pressure tested before it can be used.

The current safety valve has the following problems: because the thimble overlength, need grind the thimble and reduce length and realize the matching of length to satisfy nut department on the fixed part and can lock on the casing, this kind of mode has two problems, and first, the abrasive material is wasted time and energy, increases manpower and materials, and second, in case grind back length with the thimble and be less than required length then this thimble directly scrap unable the use, can't make the thimble top in the slot promptly, leads to increasing the cost. To above-mentioned problem, prior art has carried out technological innovation, like application number 2017208443971, application date is 2017, 12 months, the name is the utility model patent of relief valve, has described the relief valve, including nozzle, casing, regulation circle, valve clack and recoil dish, and nozzle top and bottom are the opening, and the casing is even at the nozzle outer wall, and the top outer wall threaded connection of nozzle has the regulation circle, set up the slot that a plurality of circumference intervals set up on the outer wall of regulation circle, the top of regulation circle has interconnect's valve clack and recoil dish, the valve clack can be opened and close the nozzle top, threaded mounting hole has been seted up on the casing, the last pressure regulating subassembly that has of threaded mounting hole, its characterized in that: the pressure regulating assembly comprises a screw rod, a locking nut and an ejector pin, the outer wall of the screw rod is provided with threads, a blind hole is formed in the right end of the screw rod, the inner end of the ejector pin is inserted into the blind hole, the outer end of the ejector pin is supported on the corresponding slot, the locking nut is in threaded connection with the outer wall of the left end of the screw rod, and the end face of the locking end of the locking nut is tightly pressed on the shell. The safety valve is characterized in that: pressure regulating assembly is when the assembly, at first insert the thimble tight fit in the blind hole of screw rod, then with the outer end top of thimble on the slot that corresponds, rotatory screw rod makes the screw rod get into in the screw thread mounting hole again, thimble inner continues to get into in the screw rod until moving to the blind hole bottom, then with lock nut threaded connection on the left end outer wall of screw rod, rotatory lock nut is to compressing tightly on the casing, compare with the pressure regulating structure among the prior art, this pressure regulating assembly need not to carry out the abrasive material to the thimble, consequently, also avoided leading to the condemned phenomenon of thimble to take place because of the abrasive material. In addition, compared with the prior art, the safety valve with the pressure regulating assembly has the advantages that the safety performance of the pressure regulating assembly is enhanced, as shown in the figure six, the pressure regulating assembly can be dismounted by rotating the fixing piece, the pressure regulating assembly is provided with two sections of threaded connections, firstly, the locking nut needs to be dismounted, then, the ejector pin can be separated from the slot by rotating the screw rod, the ejector pin is prevented from being separated due to the fact that the nut is directly rotated by an operation error of an irrelevant person, and a certain protection function is achieved. Locking nut 7 in this adjusting part still plays the function of reinforcing pressure regulating part stability, because locking nut's locking surface compresses tightly on the casing, consequently can increase stability. In conclusion, when the opening pressure of the valve clack of the safety valve needs to be adjusted, the locking nut is detached, the screw rod is screwed out through the screwdriver, the outer end of the thimble is separated from the slot 3a of the adjusting ring, then the adjusting ring can be adjusted, the spring above the adjusting ring is compressed when the adjusting ring moves upwards, the pressure is increased, and the pressure is reduced when the adjusting ring moves downwards. And after the adjustment is finished, the screw rod is rotated and reset, the ejector pin is jacked in the slot again, and the locking nut is reset.

Although the technical scheme has the technical effect, the thimble only has one position to act on the slot of the adjusting ring, so that the limiting effect is limited.

The present application is proposed to solve the above problems.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide the relief valve part based on limit structure, this relief valve part very big degree has strengthened thimble limiting displacement, has solved current thimble structural action position singleness, and limiting displacement is limited scheduling problem.

The purpose of the utility model can be realized by the following technical proposal: safety valve part based on limit structure, including thimble and nut, the thimble is the major axis form, the outer end of thimble has the external screw thread section, the nut outer wall has external screw thread, its characterized in that: the inner of thimble has spacing portion, spacing portion is last to have two at least spacing teeth that set up at the interval, thimble outer end external screw thread section spiro union in the nut hole.

In the safety valve component, the thimble is additionally provided with a limiting part, and a plurality of limiting teeth are arranged on the limiting part to enhance the limiting capacity. During installation, the inner end of the ejector pin is installed firstly, namely the limiting teeth are matched with the slots, and then the nut is screwed on the external thread section at the outer end of the ejector pin. This safety valve part increases spacing tooth quantity through addding spacing portion to the cooperation of better realization and regulating ring slot improves spacing ability.

In the above-mentioned safety valve component based on the peripheral structure, the limiting part is in the shape of a straight bar, the number of the limiting teeth is three, and the length of the limiting teeth in the middle is shorter than the lengths of the other two limiting teeth.

In this kind of scheme, spacing portion is the straight bar shape, combines the regulation circle characteristic, utilizes spacing tooth and the regulation circle of different length to realize the cooperation.

In the above-mentioned safety valve part based on the circumference structure, the spacing portion is arc-shaped, and the profile is smaller than a semicircle, and the spacing teeth have the same length.

In this kind of scheme, spacing portion is the arc and whole profile is less than the semicircle, makes spacing portion can the direct action regulating ring, realizes the cooperation of spacing tooth and slot, and spacing tooth can block just in the slot of regulating ring this moment, need not to change spacing tooth length.

In the foretell safety valve part based on limit structure, supplementary locking structure has between thimble and the external screw thread section, supplementary locking structure is including perforating, connecting hole and connecting bolt, it sets up to perforate the nut tip just runs through to the hole, the connecting hole has the internal thread and sets up in thimble outer end tip department, connecting bolt passes perforate the spiro union in the connecting hole.

After the nut finishes the cooperation with the thimble, in order to reduce the nut and because of the dislocation appears in the vibration, realize being connected between thimble and the nut through connecting bolt to the connection stability of reinforcing structure.

In the above-described safety valve member based on the peripheral structure, a fastening direction of the connecting bolt is the same as a fastening direction of the thimble.

The screwing direction of the ejector pin refers to the screwing motion between the ejector pin and the nut, and the screwing direction of the connecting bolt refers to the screwing direction of the connecting bolt and the ejector pin. When the ejector pin is not moved, the connecting bolt rotates clockwise to be loosened, when the connecting bolt is not moved, the ejector pin rotates anticlockwise to be loosened, and when the ejector pin moves anticlockwise, the ejector pin is in a locking state relative to the nut, so that when the ejector pin has a loosening trend relative to the connecting bolt, the ejector pin has a locking trend relative to the nut, the connecting bolt and the ejector pin are in the same screwing direction, the dislocation phenomenon cannot occur, and the structural design is ingenious.

In the above-described relief valve member based on the peripheral structure, the depth of the connecting hole is not less than 1 cm.

In the above-mentioned safety valve member based on the peripheral structure, the length of the nut is not less than 1 cm.

In the above-described safety valve member based on the peripheral structure, the through-hole is a screw hole.

In this kind of scheme, set up the perforation and can improve the spiro union intensity of connecting bolt as the screw hole.

Compared with the prior art, the safety valve component based on the circumference structure has the following advantages:

1. this safety valve part based on limit structure increases spacing tooth quantity through addding spacing portion to better realization and the cooperation of regulating ring slot improve spacing ability.

2. This safety valve part based on limit structure passes through the fixed connection that auxiliary connection structure realized between thimble and the nut to the connection stability of reinforcing structure.

3. The safety valve component based on the periphery structure has the advantages that the screwing directions of the connecting bolt and the thimble are the same, dislocation cannot occur, and the structural design is ingenious.

Drawings

FIG. 1 is a sectional view of the first embodiment.

Fig. 2 is an enlarged view of a structure of a region a in fig. 1.

FIG. 3 is a sectional view showing the structure of the second embodiment.

List of reference numerals

In the figure, 1, a thimble;

1a, an external thread section;

1b, a limiting part;

1b1, limit teeth;

1c, connecting holes;

2. a nut;

2a, punching;

3. and connecting the bolts.

Detailed Description

Example one

As shown in fig. 1 and 2, the safety valve component based on the peripheral structure includes a thimble 1 and a nut 2, the thimble 1 is in a long shaft shape, an outer end of the thimble 1 has an external thread section 1a, an outer wall of the nut 2 has an external thread, an inner end of the thimble 1 has a limiting portion 1b, the limiting portion 1b has at least two limiting teeth 1b1 arranged at intervals, and the external thread section 1a at the outer end of the thimble 1 is screwed with an inner hole of the nut 2. In the safety valve component, a limit part 1b is additionally arranged on the thimble 1, and limit capacity is enhanced by arranging a plurality of limit teeth 1b1 on the limit part 1 b. When the thimble is installed, the inner end of the thimble 1 is installed firstly, namely the limiting tooth 1b1 is matched with the slot, and then the nut 2 is screwed on the external thread section 1a at the outer end of the thimble 1. This safety valve part increases spacing tooth 1b1 quantity through addding spacing portion 1b to the cooperation of better realization and regulation circle slot improves spacing ability.

Specifically, the stopper 1b has a straight strip shape, the number of the stopper teeth 1b1 is three, and the length of the stopper tooth 1b1 located in the middle is shorter than the lengths of the remaining two stopper teeth 1b 1. In the scheme, the limiting part 1b is in a straight strip shape, and is matched with the adjusting ring by utilizing the limiting teeth 1b1 with different lengths in combination with the characteristics of the adjusting ring. An auxiliary locking structure is arranged between the thimble 1 and the external thread section 1a, the auxiliary locking structure comprises a through hole 2a, a connecting hole 1c and a connecting bolt 3, the through hole 2a is arranged at the end part of the nut 2 and penetrates through the inner hole, the connecting hole 1c is provided with an internal thread and is arranged at the end part of the outer end of the thimble 1, and the connecting bolt 3 penetrates through the through hole 2a and is in threaded connection with the connecting hole 1 c. After the nut 2 finishes cooperating with the thimble 1, in order to reduce the dislocation of the nut 2 because of the vibration, realize being connected between the thimble 1 and the nut 2 through the connecting bolt 3 to the connection stability of reinforcing structure. The screwing direction of the connecting bolt 3 is the same as that of the thimble 1. The screwing direction of the thimble 1 refers to the screwing motion between the thimble 1 and the nut 2, and the screwing direction of the connecting bolt 3 refers to the screwing direction of the connecting bolt 3 and the thimble 1. When the thimble 1 is fixed, the connecting bolt 3 rotates clockwise to be loosened, when the connecting bolt 3 is fixed, the thimble 1 rotates anticlockwise to be loosened, and when the thimble 1 moves anticlockwise, the thimble is in a locking state relative to the nut 2, therefore, when the thimble 1 has a loosening trend relative to the connecting bolt 3, the thimble 1 has a locking trend relative to the nut 2, therefore, the connecting bolt 3 and the thimble 1 are screwed in the same direction, and the dislocation phenomenon can not occur, and the structural design is ingenious. The depth of the connecting hole 1c is 2cm, and the length of the screw cap 2 is 2 cm. The through hole 2a is a screw hole. In this case, providing the through-hole 2a as a screw hole can improve the screwing strength of the attachment bolt 3.

Example two

As shown in fig. 3, the present embodiment is different from the first embodiment in that: the limiting part 1b is arc-shaped, the profile of the limiting part is smaller than a semicircle, and the length of the limiting teeth 1b1 is the same. In this kind of scheme, spacing portion 1b is the arc and overall profile is less than the semicircle, makes spacing portion 1b can direct action regulating ring, realizes the cooperation of spacing tooth 1b1 and slot, and spacing tooth 1b1 can block in the slot of regulating ring just this moment, need not to change spacing tooth 1b1 length.

Details, structures, dimensions and principles not mentioned in the present application are all known in the art or can be obtained by simple selection of those skilled in the art, and are not described in detail.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (8)

1. Safety valve part based on limit structure, including thimble and nut, the thimble is the major axis form, the outer end of thimble has the external screw thread section, the nut outer wall has external screw thread, its characterized in that: the inner of thimble has spacing portion, spacing portion is last to have two at least spacing teeth that set up at the interval, thimble outer end external screw thread section spiro union in the nut hole.

2. The peripheral structure-based relief valve component of claim 1, wherein said check portion is straight, said check teeth are three in number, and the length of the check tooth in the middle is shorter than the remaining two check teeth.

3. The perimeter structure based safety valve component of claim 1, wherein the limiting portion is arc-bar shaped and has a profile less than a half circle, and the limiting teeth are the same length.

4. The peripheral structure-based relief valve member according to claim 1, 2 or 3, wherein said pin and said male threaded section have an auxiliary locking structure therebetween, said auxiliary locking structure comprising a through hole opened at said nut end portion and penetrating to an inner hole, a connecting hole having an inner thread and opened at an outer end portion of said pin, and a connecting bolt screwed to said connecting hole through said through hole.

5. The peripheral based relief valve member according to claim 4, wherein a tightening direction of said connecting bolt is the same as a tightening direction of said thimble.

6. The perimeter structure-based safety valve component of claim 5, wherein the connecting aperture depth is no less than 1 cm.

7. A peripheral based relief valve member according to claim 1, 2 or 3, wherein the length of said nut is not less than 1 cm.

8. The perimeter structure-based safety valve component of claim 4, wherein the perforations are threaded holes.

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