Anti-impact valve seat for shuttle valve

Abstract

The utility model discloses a valve seat for an anti-impact shuttle valve, which comprises a shuttle valve shell, an alignment groove and a fastening component, the fastening component is arranged, and the firm locking among an L-shaped stretching rod, an L-shaped fastening rod, an anti-pressure mechanism and the shuttle valve shell is improved through bolt fastening; the anti-impact sleeve is matched with the two groups of sliding rods and the anti-impact springs, so that the anti-impact sleeve not only plays a role in movement guiding, but also plays an anti-impact auxiliary buffering effect, and therefore, the service lives of the valve body and the anti-impact sleeve are indirectly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of shuttle valves, in particular to a valve seat for an impact-resistant shuttle valve. Background Technique

[0002] The shuttle valve belongs to the direct stroke valve, which is a valve integrating the valve body and the actuator. Its advantages are small volume and convenient installation. Coupled with the particularity of the internal piston structure, the medium pressure has almost no more resistance interference on the piston, thus realizing the excellent quality of fast switching and small pressure loss. Most of the existing high-pressure shuttle valve seats are metal valve seats. Even if soft-sealed valve seats are used at low pressure, they do not have the ability to absorb the water hammer impact of the shuttle valve. In this way, the valve seat is easily damaged, resulting in poor sealing performance and high noise.

[0003] For example, the patent with the publication number CN201621356547.6 discloses "Impact-resistant shuttle valve seat". By setting a spherical surface on the sealing surface of the valve seat that fits the spherical surface of the valve core, this face-to-face soft seal has good sealing performance, can effectively buffer the water hammer impact of the shuttle valve, extend the service life of the valve seat, and reduce the noise during the operation of the shuttle valve at the same time.

[0004] However, when the existing shuttle valve seat is in use, due to the large water hammer impact of the shuttle valve and the general lack of anti-impact function of the shuttle valve seat, the valve body is easily damaged due to excessive impact force. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a valve seat for an impact-resistant shuttle valve, and solves the problems raised above.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the utility model is realized through the following technical solutions: A valve seat for an impact-resistant shuttle valve, including a shuttle valve housing, a positioning groove, and a fastening assembly. A positioning groove is opened on the outer side of the middle part of the shuttle valve housing, and the fastening assembly is fitted and installed on the inner side of the positioning groove. The fastening assembly includes an L-shaped tension rod, an L-shaped fastening rod, a compression-resistant mechanism, and a rubber sealing ring. The right end of the L-shaped tension rod is fixedly connected to the left end of the L-shaped fastening rod by a bolt. The left rear side of the L-shaped tension rod is fixed to the front left side of the compression-resistant mechanism. A rubber sealing ring is sleeved on the outer side of the rear end of the compression-resistant mechanism. The L-shaped tension rod and the L-shaped fastening rod are respectively fitted and installed on the inner side of the positioning groove.

[0009] Preferably, the compression resistance mechanism includes a valve body, an impact-resistant sleeve, a sliding rod, and an impact-resistant spring. An impact-resistant sleeve is arranged inside the valve body. The rear end of the impact-resistant sleeve is slidably matched with the sliding rod. An impact-resistant spring is sleeved outside the sliding rod. The sliding rod and the impact-resistant spring are respectively arranged at the rear side inside the valve body. The left rear side of the L-shaped tension rod is fixed to the left side of the front end of the valve body. A rubber sealing ring is sleeved outside the rear end of the valve body.

[0010] Preferably, a notch is formed inside the right end of the L-shaped tension rod. The notch is fitted with the protrusion at the left end of the L-shaped fastening rod and is locked with the middle part inside the alignment groove through a bolt, so as to threadedly fasten the L-shaped tension rod and the L-shaped fastening rod to the inside of the alignment groove through the bolt respectively.

[0011] Preferably, the L-shaped tension rods are symmetrically installed at the left sides of the front and rear ends of the compression resistance mechanism, and the inner sides of the two groups of L-shaped tension rods are fitted with the inner side of the alignment groove, which is convenient for fitting and aligning installation with matching shapes.

[0012] Preferably, movable grooves are respectively arranged at the front and rear sides of the right end inside the valve body. The sliding rod and the impact-resistant spring are respectively fitted with the inner sides of the movable grooves, which is convenient for installation without causing too much interference to the notch inside the main body.

[0013] Preferably, notches are arranged at both the front and rear ends of the impact-resistant sleeve. The impact-resistant sleeve is slidably matched with the sliding rod through the notches, and is elastically matched with the impact-resistant spring at the same time. The impact-resistant spring is used to assist in improving the impact resistance effect of the impact-resistant sleeve.

[0014] Preferably, a soft rubber pad is arranged outside the left end of the valve body. The soft rubber pad outside the left end of the valve body is attached to the right end inside the valve body, and the impact resistance of the front end of the impact-resistant sleeve is improved through the soft rubber pad, so as to improve the service life of the impact-resistant sleeve.

[0015] (III) Beneficial effects

[0016] The utility model provides a valve seat for an impact-resistant shuttle valve, which has the following beneficial effects: By arranging a fastening assembly, the firm locking between the L-shaped tension rod, the L-shaped fastening rod and the compression resistance mechanism and the shuttle valve housing is improved through bolt fastening; Through the cooperation of the impact-resistant sleeve, two groups of sliding rods and the impact-resistant spring, not only the movement of the impact-resistant sleeve is guided, but also the impact-resistant sleeve is assisted in buffering against impact, thereby indirectly improving the service lives of the valve body and the impact-resistant sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural diagram of the utility model;

[0018] Figure 2 is a planar structural diagram of the utility model;

[0019] Figure 3 is a top - view structural schematic diagram of the fastening assembly of the present utility model;

[0020] Figure 4 is a three - dimensional structural schematic diagram of the fastening assembly of the present utility model;

[0021] Figure 5 is a top - view structural schematic diagram of the compressive mechanism of the present utility model.

[0022] In the figure: shuttle valve housing - 1, alignment groove - 2, fastening assembly - 3, L - shaped tension rod - 31, L - shaped fastening rod - 32, compressive mechanism - 33, rubber sealing ring - 34, valve body - 331, impact - resistant sleeve - 332, sliding rod - 333, impact - resistant spring - 334. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1 and 2 The present utility model provides a technical solution for a valve seat of an impact - resistant shuttle valve: An impact - resistant shuttle valve seat includes a shuttle valve housing 1, an alignment groove 2, and a fastening assembly 3. An alignment groove 2 is provided on the outer side of the middle part of the shuttle valve housing 1, and the fastening assembly 3 is fitted and installed with the inner side of the alignment groove 2.

[0025] Please refer to Figure 3 and 4, the present utility model provides a technical solution for a valve seat of an impact-resistant shuttle valve: A valve seat of an impact-resistant shuttle valve, the fastening assembly 3 includes an L-shaped tension rod 31, an L-shaped fastening rod 32, a compressive mechanism 33 and a rubber sealing ring 34. The right end of the L-shaped tension rod 31 is fixedly connected to the left end of the L-shaped fastening rod 32 by bolts. The left rear side of the L-shaped tension rod 31 is fixed to the front left side of the compressive mechanism 33. A rubber sealing ring 34 is sleeved on the outer side of the rear end of the compressive mechanism 33. The L-shaped tension rod 31 and the L-shaped fastening rod 32 are respectively fitted and installed with the inner side of the alignment groove 2. A notch is provided on the inner side of the right end of the L-shaped tension rod 31, and the notch is fitted and installed with the protrusion at the left end of the L-shaped fastening rod 32, and is locked and cooperated with the middle part of the inner side of the alignment groove 2 by bolts, so as to threadedly fasten the L-shaped tension rod 31 and the L-shaped fastening rod 32 to the inner side of the alignment groove 2 respectively by bolts. The L-shaped tension rods 31 are symmetrically installed on the left sides of the front and rear ends of the compressive mechanism 33, and the inner sides of the two groups of L-shaped tension rods 31 are fitted and installed with the inner side of the alignment groove 2, which is convenient for fitting and aligning installation with matching shapes.

[0026] Please refer to Figure 5 , the present utility model provides a technical solution for a valve seat of an impact-resistant shuttle valve: A valve seat of an impact-resistant shuttle valve, the compressive mechanism 33 includes a valve body 331, an impact-resistant sleeve 332, a sliding rod 333 and an impact-resistant spring 334. An impact-resistant sleeve 332 is arranged inside the valve body 331. The rear end of the impact-resistant sleeve 332 is slidably matched with the sliding rod 333. An impact-resistant spring 334 is sleeved on the outer side of the sliding rod 333. The sliding rod 333 and the impact-resistant spring 334 are respectively arranged at the rear side inside the valve body 331. The left rear side of the L-shaped tension rod 31 is fixed to the front left side of the valve body 331. A rubber sealing ring 34 is sleeved on the outer side of the rear end of the valve body 331. Activity grooves are respectively arranged on the front and rear sides at the right end inside the valve body 331. The sliding rod 333 and the impact-resistant spring 334 are respectively fitted with the inner sides of the activity grooves, which is convenient for not causing too much interference to the notch inside the main body during installation. Notches are arranged at both the front and rear ends of the impact-resistant sleeve 332. The impact-resistant sleeve 332 is slidably matched with the sliding rod 333 through the notches, and is elastically matched with the impact-resistant spring 334 at the same time, and the impact-resistant effect of the impact-resistant sleeve 332 is assisted by the impact-resistant spring 334. A soft rubber pad is arranged on the outer side of the left end of the valve body 331, and the software pad on the outer side of the left end of the valve body 331 is attached to the right end inside the valve body 331, and the impact-resistant effect on the front end of the impact-resistant sleeve 332 is improved through the soft rubber pad, so as to improve the service life of the impact-resistant sleeve 332.

[0027] In use, the bolt fastening is adopted to enhance the firm locking effect between the L-shaped tension rod 31, the L-shaped fastening rod 32 and the compressive mechanism 33 and the shuttle valve housing 1; and through the impact-resistant sleeve 332 cooperating with the two groups of sliding rods 333 and the impact-resistant springs 334, not only the impact-resistant sleeve 332 is guided to move, but also an auxiliary impact-resistant effect is exerted on the impact-resistant sleeve 332. At the same time, a soft rubber pad is arranged on the outer side of the left end of the impact-resistant sleeve 332, so as to buffer the left end of the impact-resistant sleeve 332, thereby indirectly prolonging the service life of the impact-resistant sleeve 332 and the valve body 331.

[0028] The control mode of the present utility model is controlled by manually starting and closing a switch. The wiring diagram of the power element and the power supply are common knowledge in the art, and the present utility model is mainly used to protect mechanical devices, so the control mode and wiring layout of the present utility model will not be explained in detail.

[0029] The control mode of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art, and the power supply is also common knowledge in the art. Since the present utility model is mainly used to protect mechanical devices, the control mode and circuit connection of the present utility model will not be explained in detail.

[0030] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A valve seat for an impact-resistant shuttle valve, comprising a shuttle valve housing (1) and a positioning groove (2), wherein the positioning groove (2) is formed on the outer side of the middle part of the shuttle valve housing (1); It is characterized in that: It further includes a fastening assembly (3), the fastening assembly (3) is fitted and installed with the inner side of the positioning groove (2), the fastening assembly (3) includes an L-shaped stretching rod (31), an L-shaped fastening rod (32), a compression-resistant mechanism (33) and a rubber sealing ring (34), the right end of the L-shaped stretching rod (31) is firmly connected with the left end of the L-shaped fastening rod (32) by bolts, the left rear side of the L-shaped stretching rod (31) is fixed to the front left side of the compression-resistant mechanism (33), the rubber sealing ring (34) is sleeved on the outer side of the rear end of the compression-resistant mechanism (33), and the L-shaped stretching rod (31) and the L-shaped fastening rod (32) are respectively fitted and installed with the inner side of the positioning groove (2).

2. The valve seat for an impact-resistant shuttle valve according to claim 1, wherein: The compression-resistant mechanism (33) includes a valve body (331), an impact-resistant sleeve (332), a sliding rod (333) and an impact-resistant spring (334), the impact-resistant sleeve (332) is arranged inside the valve body (331), the rear end of the impact-resistant sleeve (332) is slidably matched with the sliding rod (333), the impact-resistant spring (334) is sleeved on the outer side of the sliding rod (333), the sliding rod (333) and the impact-resistant spring (334) are respectively arranged at the rear side inside the valve body (331), the left rear side of the L-shaped stretching rod (31) is fixed to the front left side of the valve body (331), and the rubber sealing ring (34) is sleeved on the outer side of the rear end of the valve body (331).

3. The valve seat for an impact-resistant shuttle valve according to claim 1, characterized in that: A notch is formed on the inner side of the right end of the L-shaped stretching rod (31), the notch is fitted and installed with the protrusion at the left end of the L-shaped fastening rod (32), and is locked and matched with the middle part of the inner side of the positioning groove (2) by bolts.

4. The valve seat for an impact-resistant shuttle valve according to claim 1, characterized in that: The L-shaped stretching rods (31) are symmetrically installed at the left sides of the front and rear ends of the compression-resistant mechanism (33), and the inner sides of the two groups of L-shaped stretching rods (31) are fitted and installed with the inner side of the positioning groove (2).

5. The valve seat for an impact-resistant shuttle valve according to claim 2, characterized in that: Activity grooves are respectively arranged at the front and rear sides of the right end inside the valve body (331), and the sliding rod (333) and the impact-resistant spring (334) are respectively fitted with the inner sides of the activity grooves.

6. The valve seat for an impact-resistant shuttle valve according to claim 2, characterized in that: Notches are arranged at both the front and rear ends of the impact-resistant sleeve (332), the impact-resistant sleeve (332) is slidably matched with the sliding rod (333) through the notches, and is elastically matched with the impact-resistant spring (334).

7. The valve seat for an impact-resistant shuttle valve according to claim 2, characterized in that: A soft rubber pad is arranged on the outer side of the left end of the valve body (331), and the soft rubber pad on the outer side of the left end of the valve body (331) is attached to the right end inside the valve body (331).

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