Pressure relief structure at water supply end of shot blasting machine

Abstract

The utility model discloses a pressure relief structure at a water supply end of a shot blasting machine. The water inlet pipe is connected with a first port of the three-way connector; the small water inlet shaft is connected with the second port of the three-way connector, and a water inlet channel is arranged in the small water inlet shaft; the pressure release valve is connected with a third port of the three-way connector; wherein the first port and the third port are vertically opposite, and the opening pressure of the pressure release valve is larger than the water pressure in the water three-way connector. The tee joint is arranged at the water inlet end of the shot blasting machine, the bottom port and the side port of the tee joint are connected with the water inlet pipe and the small water inlet shaft correspondingly, the top port of the tee joint is connected with the pressure release valve, when gas is mixed in the inlet water and passes through the tee joint, the gas can be reserved at the top of the tee joint, the pressure is increased after the gas is extruded by the inlet water, and the pressure release valve is jacked open; therefore, the air in the shot blasting machine is prevented from influencing the effect of the shot blasting machine.

Description

Technical Field

[0001] This utility model relates to a pressure relief structure for shot blasting machines, and more particularly to a pressure relief structure for the water supply end of a shot blasting machine. Background Technology

[0002] The main function of a shot blasting machine is to propel shot at high speed onto the surface of a workpiece through a shot blaster to remove impurities such as oxide scale, rust, and welding slag, or to perform surface strengthening.

[0003] During the shot blasting process, the wet shot blasting machine can reduce the shot blasting temperature and noise by injecting water, and also improve the shot blasting effect.

[0004] During the water supply process, air may be mixed in the water. Wet dust removal relies on water to adsorb and capture dust. The entry of gas will interfere with the full contact between water mist and dust, preventing some dust from being effectively humidified and settled, thus reducing the dust removal effect. Gas entering the shot blasting machine may cause unstable internal pressure, affecting the normal operation of the shot blasting machine, and may even cause vibration and noise. Gas in the water pipe may form air pockets, occupying the water pipe space and reducing the water flow. Therefore, it is urgent to design a structure to discharge the gas mixed in the water at the water inlet end, so as to avoid affecting the shot blasting machine. Utility Model Content

[0005] The existing shot blasting machine does not have a pressure relief and exhaust mechanism at the water inlet, which causes gas mixed in the water to affect the shot blasting process. Therefore, this utility model provides a pressure relief structure at the water supply end of the shot blasting machine.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0007] The pressure relief structure at the water supply end of the shot blasting machine includes:

[0008] T-connector;

[0009] The water inlet pipe is connected to the first port of the tee connector;

[0010] The water inlet shaft is connected to the second port of the tee connector and has an internal water inlet channel;

[0011] The pressure relief valve is connected to the third port of the tee fitting; the first and third ports are opposite each other, and the opening pressure of the pressure relief valve is greater than the water pressure inside the tee fitting.

[0012] Preferably, the pressure relief valve includes a valve body, a spring disposed within the valve body, and a valve core slidably disposed within the valve body. The valve body has a conical cavity communicating with the outside. The bottom of the valve core has a conical head for sealing the bottom part of the conical cavity. The spring applies elastic force to the valve core, causing the conical head to press against the bottom of the conical cavity, thus keeping the pressure relief valve in a normally closed state.

[0013] Preferably, the valve body includes a base portion and a cover portion. The top of the base portion is provided with a step, and the cover portion is detachable and sealed at the step. The valve core also includes a valve stem, which is slidably sealed in the middle of the cover portion. A clamping nut is threadedly connected to the outer end side wall of the valve stem.

[0014] Preferably, a sealing washer is fitted on the valve stem, and an exhaust hole is provided on the cover. When the pressure relief valve is in the closed state, the clamping nut presses the sealing washer and blocks the exhaust hole.

[0015] Preferably, a baffle plate with vent holes is provided on the inner wall of the base portion, and the valve stem passes through the baffle plate.

[0016] Preferably, the spring is sleeved on the valve stem and its two ends abut against the bottom of the baffle plate and the top of the conical head, respectively.

[0017] Preferably, the pressure relief valve has a threaded connection at the bottom and is connected to a tee fitting via the threaded connection.

[0018] Preferably, the water inlet shaft is equipped with a bearing for rotational engagement with the shot blasting machine.

[0019] Preferably, the top port of the tee connector is connected to the pressure relief valve via a vertical pipe.

[0020] Compared with the prior art, the advantages of this utility model are as follows: This application sets a tee at the water inlet of the shot blasting machine, and connects the bottom port and side port of the tee to the water inlet pipe and the water inlet shaft respectively, while the top port is connected to the pressure relief valve. When gas is mixed in the water and passes through the tee, the gas will remain at the top of the tee. After being squeezed by the water, the pressure increases and pushes open the pressure relief valve, thus venting the gas and preventing the gas inside the shot blasting machine from affecting the shot blasting effect. Attached Figure Description

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0022] Figure 1 This is an overall side view of the structure of this application after it has been installed in a shot blasting machine;

[0023] Figure 2 This is a perspective view of the structure of this application after it has been installed in a shot blasting machine.

[0024] Figure 3 This is a perspective view of the present application;

[0025] Figure 4 This is a sectional view of the application;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0027] In the diagram: 10, shot blasting machine; 20, pressure relief valve; 201, valve body; 2011, base part; 20110, conical cavity; 20111, baffle plate; 20121, 201111, vent hole; 2012, cover part; 202, valve stem; 2021, conical head; 203, spring; 204, clamping nut; 205, washer; 30, tee connector; 301, vertical pipe; 40, water inlet pipe; 50, water inlet shaft. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0029] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures. Example

[0030] This embodiment mainly describes the pressure relief structure at the water supply end of the shot blasting machine, as detailed below:

[0031] The pressure relief structure at the water supply end of the shot blasting machine, such as Figure 1-5 As shown, it includes:

[0032] 30-inch tee connector;

[0033] The inlet pipe 40 is connected to the first port of the tee connector 30;

[0034] The inlet shaft 50 is connected to the second port of the tee connector 30 and has an inlet channel inside.

[0035] A pressure relief valve 20 is connected to the third port of a three-way connector 30. The first and third ports are vertically opposite each other, and the opening pressure of the pressure relief valve 20 is greater than the internal water pressure of the three-way connector 30. In this design, when gas is mixed in the inlet pipe 40, it accumulates at the top port of the three-way connector 30 as it passes through it. Under the pressure of the water, the gas increases, opening the pressure relief valve 20 and releasing the gas. After the gas is released, the pressure decreases, and the pressure relief valve 20 automatically closes.

[0036] Preferably, the pressure relief valve 20 includes a valve body 201, a spring 203 disposed within the valve body 201, and a valve core slidably disposed within the valve body 201. The valve body 201 has a conical cavity 20110 communicating with the outside. The bottom of the valve core has a conical head 2021 for sealing the bottom portion of the conical cavity 20110. The spring 203 applies elastic force to the valve core, causing the conical head 2021 to press against the bottom of the conical cavity 20110, thus keeping the pressure relief valve 20 in a normally closed state. In this design, the conical cavity 20110 ensures that even if some water enters the pressure relief valve 20 during venting, it can be returned through the conical cavity 20110.

[0037] Preferably, the valve body 201 includes a base portion 2011 and a cover portion 2012. The top of the base portion 2011 is provided with a step, and the cover portion 2012 is detachable and sealed at the step. The valve core also includes a valve stem 202, which is slidably sealed in the middle of the cover portion 2012. A clamping nut 204 is threadedly connected to the outer end side wall of the valve stem 202.

[0038] Preferably, a sealing washer 205 is fitted on the valve stem 202, and an exhaust hole 20121 is provided on the cover part 2012. When the pressure relief valve 20 is in the closed state, the clamping nut 204 presses the sealing washer 205 and blocks the exhaust hole 20121.

[0039] Preferably, the inner wall of the base portion 2011 is provided with a baffle plate 20111 with an exhaust hole 201111, and the valve stem 202 passes through the baffle plate 20111.

[0040] Preferably, the spring 203 is sleeved on the valve stem 202 and the two ends of the spring 203 abut against the bottom of the baffle plate 20111 and the top of the conical head 2021, respectively.

[0041] Preferably, the pressure relief valve 20 has a threaded connection at the bottom and is connected to the tee connector 30 through the threaded connection.

[0042] Preferably, the water inlet shaft 50 is provided with a bearing for rotational engagement with the shot blasting machine 10.

[0043] Preferably, the top port of the tee connector 30 is connected to the pressure relief valve 20 via a riser pipe 301. This section of the riser pipe 301 is used to contain gas and allow the gas to accumulate inside the riser pipe 301.

[0044] The title provided above provides a detailed description of the present utility model. Specific examples have been used to illustrate the principles and implementation methods of the present utility model. The description of the above embodiments is only for the purpose of helping to understand the present utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present utility model without departing from the principles of the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A pressure relief structure at the water supply end of a shot blasting machine, characterized in that, include: T-connector; The water inlet pipe is connected to the first port of the tee connector; The water inlet shaft is connected to the second port of the tee connector and has an internal water inlet channel; The pressure relief valve is connected to the third port of the tee fitting; the first and third ports are opposite each other, and the opening pressure of the pressure relief valve is greater than the water pressure inside the tee fitting.

2. The pressure relief structure at the water supply end of the shot blasting machine according to claim 1, characterized in that, The pressure relief valve includes a valve body, a spring disposed within the valve body, and a valve core slidably disposed within the valve body. The valve body has a conical cavity communicating with the outside. The bottom of the valve core has a conical head for sealing the bottom part of the conical cavity. The spring applies elastic force to the valve core, causing the conical head to press against the bottom of the conical cavity, thus keeping the pressure relief valve in a normally closed state.

3. The pressure relief structure at the water supply end of the shot blasting machine according to claim 2, characterized in that, The valve body includes a base part and a cover part. The top of the base part is provided with a step, and the cover part is detachable and sealed at the step. The valve core also includes a valve stem, which is slidably sealed in the middle of the cover part. A compression nut is threaded to the outer end side wall of the valve stem.

4. The pressure relief structure at the water supply end of the shot blasting machine according to claim 3, characterized in that, A sealing washer is fitted on the valve stem, and an exhaust hole is provided on the cover. When the pressure relief valve is in the closed state, the clamping nut will press the sealing washer tightly and block the exhaust hole.

5. The pressure relief structure at the water supply end of the shot blasting machine according to claim 3, characterized in that, The base has a baffle plate with vent holes on its inner wall, and the valve stem passes through the baffle plate.

6. The pressure relief structure at the water supply end of the shot blasting machine according to claim 5, characterized in that, The spring is sleeved on the valve stem, with its two ends abutting against the bottom of the baffle plate and the top of the conical head, respectively.

7. The pressure relief structure at the water supply end of the shot blasting machine according to claim 1, characterized in that, The pressure relief valve has a threaded connection at the bottom and is connected to a tee fitting through the threaded connection.

8. The pressure relief structure at the water supply end of the shot blasting machine according to claim 1, characterized in that, The water inlet shaft is equipped with a bearing for the rotation of the shot blasting machine.

9. The pressure relief structure at the water supply end of the shot blasting machine according to claim 1, characterized in that, The top port of the tee connector is connected to the pressure relief valve via a vertical pipe.

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